PL3998155T3 - Wielowarstwowa porowata membrana - Google Patents

Wielowarstwowa porowata membrana

Info

Publication number
PL3998155T3
PL3998155T3 PL20836861.3T PL20836861T PL3998155T3 PL 3998155 T3 PL3998155 T3 PL 3998155T3 PL 20836861 T PL20836861 T PL 20836861T PL 3998155 T3 PL3998155 T3 PL 3998155T3
Authority
PL
Poland
Prior art keywords
porous membrane
layer porous
layer
membrane
porous
Prior art date
Application number
PL20836861.3T
Other languages
English (en)
Inventor
Yuki Uchida
Naoki Machida
Atsushi HOSOKIBARA
Ryoma KAWAGUCHI
Takeshi Katagiri
Original Assignee
Asahi Kasei Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Kasei Kabushiki Kaisha filed Critical Asahi Kasei Kabushiki Kaisha
Publication of PL3998155T3 publication Critical patent/PL3998155T3/pl

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409Separators, membranes or diaphragms characterised by the material
    • H01M50/449Separators, membranes or diaphragms characterised by the material having a layered structure
    • H01M50/457Separators, membranes or diaphragms characterised by the material having a layered structure comprising three or more layers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409Separators, membranes or diaphragms characterised by the material
    • H01M50/449Separators, membranes or diaphragms characterised by the material having a layered structure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/18Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/32Layered products comprising a layer of synthetic resin comprising polyolefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/058Construction or manufacture
    • H01M10/0583Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or separators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/058Construction or manufacture
    • H01M10/0585Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4235Safety or regulating additives or arrangements in electrodes, separators or electrolyte
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409Separators, membranes or diaphragms characterised by the material
    • H01M50/411Organic material
    • H01M50/414Synthetic resins, e.g. thermoplastics or thermosetting resins
    • H01M50/417Polyolefins
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409Separators, membranes or diaphragms characterised by the material
    • H01M50/431Inorganic material
    • H01M50/434Ceramics
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409Separators, membranes or diaphragms characterised by the material
    • H01M50/443Particulate material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409Separators, membranes or diaphragms characterised by the material
    • H01M50/446Composite material consisting of a mixture of organic and inorganic materials
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409Separators, membranes or diaphragms characterised by the material
    • H01M50/449Separators, membranes or diaphragms characterised by the material having a layered structure
    • H01M50/451Separators, membranes or diaphragms characterised by the material having a layered structure comprising layers of only organic material and layers containing inorganic material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/489Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/489Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • H01M50/491Porosity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00Layers arrangement
    • B32B2250/40Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/72Density
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/724Permeability to gases, adsorption
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/732Dimensional properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00Electrical equipment
    • B32B2457/10Batteries
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Ceramic Engineering (AREA)
  • Cell Separators (AREA)
  • Laminated Bodies (AREA)
  • Solid State Image Pick-Up Elements (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
  • Electronic Switches (AREA)
  • Secondary Cells (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
PL20836861.3T 2019-07-10 2020-07-10 Wielowarstwowa porowata membrana PL3998155T3 (pl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019128750 2019-07-10
PCT/JP2020/027149 WO2021006357A1 (ja) 2019-07-10 2020-07-10 多層多孔膜

Publications (1)

Publication Number Publication Date
PL3998155T3 true PL3998155T3 (pl) 2024-06-10

Family

ID=74114559

Family Applications (1)

Application Number Title Priority Date Filing Date
PL20836861.3T PL3998155T3 (pl) 2019-07-10 2020-07-10 Wielowarstwowa porowata membrana

Country Status (8)

Country Link
US (2) US20220285790A1 (pl)
EP (2) EP3998155B1 (pl)
JP (2) JP7058803B2 (pl)
KR (2) KR20240144402A (pl)
CN (2) CN117937055A (pl)
HU (1) HUE067199T2 (pl)
PL (1) PL3998155T3 (pl)
WO (1) WO2021006357A1 (pl)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI795101B (zh) * 2020-11-30 2023-03-01 日商旭化成股份有限公司 蓄電裝置用分隔件及包含其之蓄電裝置
WO2022265001A1 (ja) * 2021-06-17 2022-12-22 東レ株式会社 ポリマー膜、積層フィルム、二次電池用セパレータおよび二次電池
CN113745754B (zh) * 2021-07-29 2023-05-30 东风汽车集团股份有限公司 一种高耐热隔膜及其制备方法和应用
CN114361717B (zh) * 2022-02-18 2024-04-30 珠海冠宇电池股份有限公司 复合隔膜及电化学装置
EP4553986A4 (en) 2022-07-08 2025-06-11 Asahi Kasei Battery Separator Corporation SEPARATOR FOR ENERGY STORAGE DEVICE
KR20250008779A (ko) * 2022-08-10 2025-01-15 아사히 가세이 배터리 세퍼레이터 가부시키가이샤 축전 디바이스용 세퍼레이터, 그 제조 방법 및 축전 디바이스
CN115275524B (zh) * 2022-08-12 2023-11-28 珠海冠宇电池股份有限公司 一种电池隔膜和电池
CN117613517B (zh) * 2024-01-22 2024-05-07 宁德新能源科技有限公司 隔离膜、二次电池以及电化学装置
CN118039800B (zh) * 2024-04-09 2024-07-05 宁德新能源科技有限公司 正极极片、二次电池和电子设备
CN119069955B (zh) * 2024-11-01 2025-03-04 珠海冠宇电池股份有限公司 一种隔膜、隔膜的制备方法及电池

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0620590B1 (pt) * 2005-12-06 2019-07-09 Lg Chem, Ltd. Separador compósito orgânico/inorgânico, método para fabricar um separador compósito orgânico/inorgânico e dispositivo eletroquímico
US8251320B2 (en) * 2006-10-04 2012-08-28 Railway Equipment Company, Inc. Railway snow melter duct assembly
CN102084579A (zh) 2008-02-07 2011-06-01 磁应用股份有限公司 紧凑型高功率交流发电机
JP5603543B2 (ja) 2008-07-07 2014-10-08 日立マクセル株式会社 電池用セパレータおよび非水電解液電池
CN102160211B (zh) * 2008-08-19 2015-04-22 帝人株式会社 非水系二次电池用隔板
JP5369171B2 (ja) * 2009-03-09 2013-12-18 旭化成イーマテリアルズ株式会社 積層セパレータ及びその製造方法
KR101361400B1 (ko) 2009-05-21 2014-02-10 아사히 가세이 이-매터리얼즈 가부시키가이샤 다층다공막
KR101408844B1 (ko) * 2010-06-10 2014-06-20 에스케이이노베이션 주식회사 고내열성 유/무기 피복층을 갖는 복합 미세다공막
JP5796367B2 (ja) 2011-06-22 2015-10-21 日産自動車株式会社 耐熱絶縁層付セパレータ
JP6120828B2 (ja) 2012-03-28 2017-04-26 旭化成株式会社 多孔膜及び多層多孔膜
WO2014148577A1 (ja) 2013-03-21 2014-09-25 日本ゼオン株式会社 リチウムイオン二次電池多孔膜用スラリー及びその製造方法、リチウムイオン二次電池用セパレータ並びにリチウムイオン二次電池
PL3016175T3 (pl) * 2013-06-27 2019-05-31 Asahi Chemical Ind Separator dla baterii z niewodnym elektrolitem oraz bateria z niewodnym elektrolitem
KR101724009B1 (ko) * 2013-08-14 2017-04-06 삼성에스디아이 주식회사 리튬 이차 전지
KR101788430B1 (ko) * 2014-08-29 2017-10-19 스미또모 가가꾸 가부시키가이샤 다공질층, 다공질층을 적층하여 이루어지는 세퍼레이터, 및 다공질층 또는 세퍼레이터를 포함하는 비수 전해액 이차 전지
KR102480759B1 (ko) * 2014-12-09 2022-12-23 도레이 카부시키가이샤 이차 전지용 세퍼레이터, 이차 전지용 세퍼레이터의 제조 방법 및 이차 전지
JP6423724B2 (ja) * 2015-01-26 2018-11-14 旭化成株式会社 電池用セパレータ、及び非水電解液電池
JP6430839B2 (ja) * 2015-01-26 2018-11-28 旭化成株式会社 電池用セパレータ、及び非水電解液電池
JP2015181110A (ja) 2015-04-20 2015-10-15 ソニー株式会社 耐熱性微多孔膜、リチウムイオン二次電池用セパレータ及びリチウムイオン二次電池
KR101792682B1 (ko) * 2015-11-05 2017-11-02 삼성에스디아이 주식회사 이차 전지용 세퍼레이터 및 이를 포함하는 리튬 이차 전지
JP6856988B2 (ja) 2015-11-19 2021-04-14 旭化成株式会社 蓄電デバイス用セパレータ及びそれを用いた積層体、捲回体、リチウムイオン二次電池又は蓄電デバイス
KR102407590B1 (ko) * 2016-10-28 2022-06-10 도레이 카부시키가이샤 비수 전해질 전지용 세퍼레이터 및 비수 전해질 전지
JP6404512B1 (ja) * 2017-05-15 2018-10-10 旭化成株式会社 非水系電解液電池用セパレータおよび非水電解液電池
CN110621731B (zh) * 2017-05-26 2022-04-08 旭化成株式会社 聚烯烃微多孔膜、蓄电装置用分隔件及蓄电装置
JP6965092B2 (ja) * 2017-10-13 2021-11-10 旭化成株式会社 ポリオレフィン微多孔膜及びこれを用いたリチウムイオン二次電池
CN111212734B (zh) * 2017-10-13 2023-04-25 旭化成株式会社 聚烯烃微多孔膜以及使用其的锂离子二次电池

Also Published As

Publication number Publication date
JP7750779B2 (ja) 2025-10-07
US20250007097A1 (en) 2025-01-02
CN114041234B (zh) 2023-11-24
EP3998155A4 (en) 2023-01-11
EP3998155B1 (en) 2024-03-27
JP2022100309A (ja) 2022-07-05
KR102732734B1 (ko) 2024-11-25
HUE067199T2 (hu) 2024-10-28
CN117937055A (zh) 2024-04-26
JPWO2021006357A1 (pl) 2021-01-14
EP4272950A1 (en) 2023-11-08
KR20220018549A (ko) 2022-02-15
EP3998155A1 (en) 2022-05-18
CN114041234A (zh) 2022-02-11
JP7058803B2 (ja) 2022-04-22
US20220285790A1 (en) 2022-09-08
WO2021006357A1 (ja) 2021-01-14
KR20240144402A (ko) 2024-10-02

Similar Documents

Publication Publication Date Title
PL3998155T3 (pl) Wielowarstwowa porowata membrana
EP3984080A4 (en) SOLID STATE ELECTROLYTIC MEMBRANE
IL281735A (en) Membrane
EP3950102A4 (en) SEPARATION MEMBRANE
GB2582695B (en) Membrane
IT201700048363A1 (it) Membrana multistrato compostabile
EP3849689A4 (en) GAS SEPARATION MEMBRANE
EP3816217A4 (en) MICROPOROUS POLYOLEFINE MEMBRANE
DK3975925T3 (da) Biokompatibel membrankomposit
KR20180084945A (ko) 다공성 막 상의 특징부
GB202012818D0 (en) Membranes
EP3894054A4 (en) COMPOSITE NANOPOROUS METALLIC MEMBRANE
HUE071382T2 (hu) Vízi jármû
EP3988612A4 (en) MICROPOROUS POLYOLEFIN MEMBRANE
GB202015546D0 (en) Membranes
SG11202105370XA (en) Porous ptfe membrane
EP4063006A4 (en) POROUS SEPARATION MEMBRANE
EP3950103A4 (en) POROUS MEMBRANE
EP4043516A4 (en) Polyolefin microporous membrane
EP3746360C0 (en) VEIL
EP4051441C0 (en) MEMBRANE TRANSDUCER WITH IMPROVED BANDWIDTH
EP4371589A4 (en) SEMI-PERMEABLE MEMBRANE
EP4074411A4 (en) SEMIPERMEABLE COMPOSITE MEMBRANE
EP3677625A4 (en) POLYOLEFIN MICROPOROUS MEMBRANE
GB202015379D0 (en) Membranes