CA1004777A - Resistivity variance reduction - Google Patents

Resistivity variance reduction

Info

Publication number
CA1004777A
CA1004777A CA189,591A CA189591A CA1004777A CA 1004777 A CA1004777 A CA 1004777A CA 189591 A CA189591 A CA 189591A CA 1004777 A CA1004777 A CA 1004777A
Authority
CA
Canada
Prior art keywords
variance reduction
resistivity
resistivity variance
reduction
variance
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA189,591A
Other languages
English (en)
Inventor
Andrew J. Kampe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Raychem Corp
Original Assignee
Raychem Corp
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 Raychem Corp filed Critical Raychem Corp
Application granted granted Critical
Publication of CA1004777A publication Critical patent/CA1004777A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H01C7/027—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient consisting of conducting or semi-conducting material dispersed in a non-conductive organic material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/146—Conductive polymers, e.g. polyethylene, thermoplastics

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Thermistors And Varistors (AREA)
  • Resistance Heating (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
CA189,591A 1973-01-18 1974-01-07 Resistivity variance reduction Expired CA1004777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00324786A US3823217A (en) 1973-01-18 1973-01-18 Resistivity variance reduction

Publications (1)

Publication Number Publication Date
CA1004777A true CA1004777A (en) 1977-02-01

Family

ID=23265098

Family Applications (1)

Application Number Title Priority Date Filing Date
CA189,591A Expired CA1004777A (en) 1973-01-18 1974-01-07 Resistivity variance reduction

Country Status (6)

Country Link
US (1) US3823217A (fr)
BE (1) BE809879A (fr)
CA (1) CA1004777A (fr)
DE (1) DE2402475A1 (fr)
FR (1) FR2214947B1 (fr)
GB (1) GB1453147A (fr)

Families Citing this family (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4954695A (en) * 1972-09-08 1990-09-04 Raychem Corporation Self-limiting conductive extrudates and methods therefor
US4017715A (en) * 1975-08-04 1977-04-12 Raychem Corporation Temperature overshoot heater
DE2513362C3 (de) * 1974-03-29 1981-06-04 Shin Misato Saitama Kiyokawa Verfahren zur Herstellung eines flachen Heizelementes
US4074222A (en) * 1974-03-29 1978-02-14 Shin Kiyokawa Planar heating element
GB1521460A (en) * 1974-08-30 1978-08-16 Raychem Corp Self-limiting electrically resistive article and process for its manufacture
US4177376A (en) * 1974-09-27 1979-12-04 Raychem Corporation Layered self-regulating heating article
US4330703A (en) * 1975-08-04 1982-05-18 Raychem Corporation Layered self-regulating heating article
CA1074096A (fr) * 1974-09-27 1980-03-25 David A. Horsma Compositions a coefficient thermique positif
US4286376A (en) * 1975-01-20 1981-09-01 Raychem Corporation Method of making heater cable of self-limiting conductive extrudates
US4560498A (en) * 1975-08-04 1985-12-24 Raychem Corporation Positive temperature coefficient of resistance compositions
US4876440A (en) * 1976-12-13 1989-10-24 Raychem Corporation Electrical devices comprising conductive polymer compositions
US4764664A (en) * 1976-12-13 1988-08-16 Raychem Corporation Electrical devices comprising conductive polymer compositions
US4426339B1 (en) 1976-12-13 1993-12-21 Raychem Corp. Method of making electrical devices comprising conductive polymer compositions
US4866253A (en) * 1976-12-13 1989-09-12 Raychem Corporation Electrical devices comprising conductive polymer compositions
US4242573A (en) * 1979-01-24 1980-12-30 Raychem Corporation Water immersible heater
US4277673A (en) * 1979-03-26 1981-07-07 E-B Industries, Inc. Electrically conductive self-regulating article
US4327480A (en) * 1979-03-26 1982-05-04 Ensign-Bickford Industries, Inc. Electrically conductive composition, process for making an article using same
US4367168A (en) * 1979-03-26 1983-01-04 E-B Industries, Inc. Electrically conductive composition, process for making an article using same
US4318220A (en) * 1979-04-19 1982-03-09 Raychem Corporation Process for recovering heat recoverable sheet material
FR2456453A1 (fr) * 1979-05-10 1980-12-05 Sunbeam Corp Element chauffant flexible et son procede de fabrication
US4543474A (en) * 1979-09-24 1985-09-24 Raychem Corporation Layered self-regulating heating article
US4591700A (en) * 1980-05-19 1986-05-27 Raychem Corporation PTC compositions
US4318881A (en) * 1980-05-19 1982-03-09 Raychem Corporation Method for annealing PTC compositions
CA1168433A (fr) * 1980-05-19 1984-06-05 Umesh K. Sopory Polymeres conducteurs ptc et dispositifs qui en contiennent
GB2100559B (en) * 1981-06-15 1985-05-15 Raychem Corp Fuel line heater feedthrough
US5093898A (en) * 1981-09-09 1992-03-03 Raychem Corporation Electrical device utilizing conductive polymer composition
US5025131A (en) * 1981-09-09 1991-06-18 Raychem Corporation Method of heating diesel fuel utilizing conductive polymer heating elements
US4935156A (en) * 1981-09-09 1990-06-19 Raychem Corporation Conductive polymer compositions
US4693940A (en) * 1983-02-14 1987-09-15 Raychem Corporation Laminate and method of preparing same
US4560524A (en) * 1983-04-15 1985-12-24 Smuckler Jack H Method of manufacturing a positive temperature coefficient resistive heating element
US4724417A (en) * 1985-03-14 1988-02-09 Raychem Corporation Electrical devices comprising cross-linked conductive polymers
US4857880A (en) * 1985-03-14 1989-08-15 Raychem Corporation Electrical devices comprising cross-linked conductive polymers
US4668857A (en) * 1985-08-16 1987-05-26 Belton Corporation Temperature self-regulating resistive heating element
CA1333381C (fr) 1986-02-20 1994-12-06 Eric D. Nyberg Methode et articles utilisant une matiere echangeuse d'ions
FR2603132B1 (fr) * 1986-08-21 1988-11-25 Electricite De France Procede de fabrication d'elements chauffants autoregulants a temperature de commutation elevee et nouveaux elements chauffants autoregulants susceptibles d'etre obtenus par mise en oeuvre de ce procede
US4889975A (en) * 1988-03-16 1989-12-26 The Fluorocarbon Company Self-regulating heater having a heat tape that stops tracking
US5057673A (en) * 1988-05-19 1991-10-15 Fluorocarbon Company Self-current-limiting devices and method of making same
CA1337012C (fr) * 1988-06-01 1995-09-19 Takahito Ishii Composition chauffante a limitation spontanee de la temperature
US5185594A (en) * 1991-05-20 1993-02-09 Furon Company Temperature sensing cable device and method of making same
US5554679A (en) * 1994-05-13 1996-09-10 Cheng; Tai C. PTC conductive polymer compositions containing high molecular weight polymer materials
KR0151677B1 (ko) * 1995-02-08 1998-12-15 권문구 도전성 고분자 발열체의 열처리방법
TW309619B (fr) * 1995-08-15 1997-07-01 Mourns Multifuse Hong Kong Ltd
DE69606310T2 (de) * 1995-08-15 2001-04-05 Bourns, Multifuse (Hong Kong) Ltd. Oberflächenmontierte leitfähige bauelemente und verfahren zur herstellung derselben
US6059997A (en) * 1995-09-29 2000-05-09 Littlelfuse, Inc. Polymeric PTC compositions
US6023403A (en) * 1996-05-03 2000-02-08 Littlefuse, Inc. Surface mountable electrical device comprising a PTC and fusible element
US6020808A (en) * 1997-09-03 2000-02-01 Bourns Multifuse (Hong Kong) Ltd. Multilayer conductive polymer positive temperature coefficent device
US6282072B1 (en) 1998-02-24 2001-08-28 Littelfuse, Inc. Electrical devices having a polymer PTC array
US6236302B1 (en) 1998-03-05 2001-05-22 Bourns, Inc. Multilayer conductive polymer device and method of manufacturing same
US6242997B1 (en) 1998-03-05 2001-06-05 Bourns, Inc. Conductive polymer device and method of manufacturing same
US6172591B1 (en) 1998-03-05 2001-01-09 Bourns, Inc. Multilayer conductive polymer device and method of manufacturing same
US6380839B2 (en) 1998-03-05 2002-04-30 Bourns, Inc. Surface mount conductive polymer device
US5993990A (en) * 1998-05-15 1999-11-30 Moltech Corporation PTC current limiting header assembly
CN1319235A (zh) 1998-09-25 2001-10-24 伯恩斯公司 制备正温度系数聚合材料的两步方法
US6582647B1 (en) 1998-10-01 2003-06-24 Littelfuse, Inc. Method for heat treating PTC devices
US6429533B1 (en) 1999-11-23 2002-08-06 Bourns Inc. Conductive polymer device and method of manufacturing same
US7588029B2 (en) * 2000-03-21 2009-09-15 Fisher & Paykel Healthcare Limited Humidified gases delivery apparatus
US7111624B2 (en) 2000-03-21 2006-09-26 Fisher & Paykel Healthcare Limited Apparatus for delivering humidified gases
US6628498B2 (en) 2000-08-28 2003-09-30 Steven J. Whitney Integrated electrostatic discharge and overcurrent device
US8206337B2 (en) 2000-10-16 2012-06-26 Fisher & Paykel Healthcare Limited Apparatus used for the humidification of gases in medical procedures
KR100454732B1 (ko) * 2001-08-25 2004-11-05 엘지전선 주식회사 전도성 중합체 조성물. 이 조성물의 특성을 조절하는 방법및 이 조성물을 이용한 전기장치
CN100350606C (zh) * 2002-04-08 2007-11-21 力特保险丝有限公司 使用压变材料的装置
US7132922B2 (en) * 2002-04-08 2006-11-07 Littelfuse, Inc. Direct application voltage variable material, components thereof and devices employing same
US7183891B2 (en) * 2002-04-08 2007-02-27 Littelfuse, Inc. Direct application voltage variable material, devices employing same and methods of manufacturing such devices
PL3766534T3 (pl) 2004-08-20 2022-12-05 Fisher & Paykel Healthcare Limited Urządzenie do pomiaru właściwości gazów dostarczanych pacjentowi
US20090027821A1 (en) * 2007-07-26 2009-01-29 Littelfuse, Inc. Integrated thermistor and metallic element device and method
EP2852425B1 (fr) 2012-05-23 2017-08-09 Fisher & Paykel Healthcare Limited Procédé de détection de défaut de trajet d'écoulement pour un appareil d'assistance respiratoire
WO2017123620A1 (fr) 2016-01-12 2017-07-20 3M Innovative Properties Company Ruban chauffant et système

Also Published As

Publication number Publication date
FR2214947B1 (fr) 1982-01-15
BE809879A (fr) 1974-07-17
DE2402475A1 (de) 1974-08-08
GB1453147A (en) 1976-10-20
US3823217A (en) 1974-07-09
FR2214947A1 (fr) 1974-08-19

Similar Documents

Publication Publication Date Title
CA1004777A (en) Resistivity variance reduction
AU474137B2 (en) Auto-refractometer
CA1034461A (fr) Catheter
CA1018983A (fr) Sulfinones
AU468964B2 (en) Melik
AU498889B2 (en) Piperidylene benzocycloheptathiophenes
AU476397B2 (en) A-cycloalkylbenzyl lactamimides
AU476505B2 (en) Alkylbenxyl lactamimides
AU472907B2 (en) Firecheck
AU476386B2 (en) Dibenzocycloheptenyl lactamimides
AU471241B2 (en) Benzothiazolylureas
AU480512B2 (en) Non-thermobogenic catheter
AU489559B2 (en) Amidinoureas
AU492165B2 (en) 2-hydroxyphenyl-1-oxa-4 azaspiro-alkan-derivatives
AU485552B2 (en) 2-acyl-4-oxo-pyrazino-isoquinolines
AU486644B2 (en) Fusebox
AU487916B2 (en) Benzopyranopyridines
AU482866B2 (en) Unsymmetrically-substituted-s-triazines
AU489560B2 (en) Amidinoureas
AU490583B2 (en) 4-aryl-5-aminoalkyl-4-oxazolin-2-ones
AU492033B2 (en) D-homo-20-keto-pregnanes
AU478880B2 (en) 3-isoxazolidinones
AU492247B2 (en) Ethenoanthracenes
AU482530B2 (en) Benzocycloheptathiophenes
AU466103B2 (en) Cis-chrysanthemate