EP0984464A3 - Verfahren zur Herstellung eines auf R-Fe-B basiertes Dauermagnet mit korrosionsfeste Schicht - Google Patents

Verfahren zur Herstellung eines auf R-Fe-B basiertes Dauermagnet mit korrosionsfeste Schicht Download PDF

Info

Publication number: EP0984464A3
Authority: EP; European Patent Office
Prior art keywords: magnet; metal; permanent magnet; based permanent; film
Prior art date: 1998-08-31
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.): Granted

Application number

EP99116399A

Other languages

English (en)

French (fr)

Other versions

EP0984464B1 (de

EP0984464A2 (de

Inventor

Takeshi Nishiuchi

Kohshi Yoshimura

Fumiaki Kikui

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.)

Proterial Ltd

Original Assignee

Sumitomo Special Metals Co Ltd

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.)

1998-08-31

Filing date

1999-08-20

Publication date

2000-06-07

1999-08-20 Application filed by Sumitomo Special Metals Co Ltd filed Critical Sumitomo Special Metals Co Ltd

2000-03-08 Publication of EP0984464A2 publication Critical patent/EP0984464A2/de

2000-06-07 Publication of EP0984464A3 publication Critical patent/EP0984464A3/de

2004-07-28 Application granted granted Critical

2004-07-28 Publication of EP0984464B1 publication Critical patent/EP0984464B1/de

2019-08-20 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000005260 corrosion Methods 0.000 title abstract 3
230000007797 corrosion Effects 0.000 title abstract 3
238000000034 method Methods 0.000 title 1
229910052751 metal Inorganic materials 0.000 abstract 3
239000002184 metal Substances 0.000 abstract 3
229910044991 metal oxide Inorganic materials 0.000 abstract 2
150000004706 metal oxides Chemical class 0.000 abstract 2
JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 abstract 1
238000010438 heat treatment Methods 0.000 abstract 1
230000003301 hydrolyzing effect Effects 0.000 abstract 1
150000002736 metal compounds Chemical class 0.000 abstract 1
238000007747 plating Methods 0.000 abstract 1
230000000379 polymerizing effect Effects 0.000 abstract 1
239000007858 starting material Substances 0.000 abstract 1

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/026—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets protecting methods against environmental influences, e.g. oxygen, by surface treatment

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Environmental & Geological Engineering (AREA)
Manufacturing & Machinery (AREA)
Manufacturing Cores, Coils, And Magnets (AREA)
Hard Magnetic Materials (AREA)
Chemically Coating (AREA)

EP19990116399 1998-08-31 1999-08-20 Verfahren zur Herstellung eines auf R-Fe-B basierten Dauermagneten mit korrosionsfester Schicht Expired - Lifetime EP0984464B1 (de)

Applications Claiming Priority (10)

Application Number	Priority Date	Filing Date	Title
JP26247698		1998-08-31
JP26247698		1998-08-31
JP27950798		1998-10-01
JP27950798		1998-10-01
JP28662898		1998-10-08
JP28662898		1998-10-08
JP30373198		1998-10-26
JP30373198		1998-10-26
JP34991598		1998-12-09
JP34991598		1998-12-09

Publications (3)

Publication Number	Publication Date
EP0984464A2 EP0984464A2 (de)	2000-03-08
EP0984464A3 true EP0984464A3 (de)	2000-06-07
EP0984464B1 EP0984464B1 (de)	2004-07-28

Family

ID=27530409

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19990116399 Expired - Lifetime EP0984464B1 (de)	1998-08-31	1999-08-20	Verfahren zur Herstellung eines auf R-Fe-B basierten Dauermagneten mit korrosionsfester Schicht

Country Status (3)

Country	Link
EP (1)	EP0984464B1 (de)
DE (2)	DE69918915T2 (de)
MY (2)	MY117187A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP4162884B2 (ja) *	2001-11-20	2008-10-08	信越化学工業株式会社	耐食性希土類磁石

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS62149108A (ja) *	1985-12-24	1987-07-03	Tohoku Metal Ind Ltd	永久磁石の製造方法
EP0502475A2 (de) *	1991-03-04	1992-09-09	Kanegafuchi Kagaku Kogyo Kabushiki Kaisha	Verfahren zur Plattierung eines Verbundmagneten sowie Verbundmagnet mit einem Metallüberzug
JPH07230906A (ja) *	1994-02-16	1995-08-29	Yazaki Corp	永久磁石およびその製造方法
JPH07302705A (ja) *	1994-05-09	1995-11-14	Daido Steel Co Ltd	耐食性希土類磁石とその製造方法
JPH09289108A (ja) *	1996-04-19	1997-11-04	Sumitomo Special Metals Co Ltd	密着性のすぐれた電気絶縁性被膜を有するＲ−Ｆｅ−Ｂ系永久磁石とその製造方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS61150201A (ja) *	1984-12-24	1986-07-08	Sumitomo Special Metals Co Ltd	耐食性のすぐれた永久磁石

1999
- 1999-08-20 DE DE69918915T patent/DE69918915T2/de not_active Expired - Lifetime
- 1999-08-20 MY MYPI9903593 patent/MY117187A/en unknown
- 1999-08-20 EP EP19990116399 patent/EP0984464B1/de not_active Expired - Lifetime
- 1999-08-20 MY MYPI9903592 patent/MY119680A/en unknown
- 1999-08-20 DE DE69915554T patent/DE69915554T2/de not_active Expired - Lifetime

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS62149108A (ja) *	1985-12-24	1987-07-03	Tohoku Metal Ind Ltd	永久磁石の製造方法
EP0502475A2 (de) *	1991-03-04	1992-09-09	Kanegafuchi Kagaku Kogyo Kabushiki Kaisha	Verfahren zur Plattierung eines Verbundmagneten sowie Verbundmagnet mit einem Metallüberzug
JPH07230906A (ja) *	1994-02-16	1995-08-29	Yazaki Corp	永久磁石およびその製造方法
JPH07302705A (ja) *	1994-05-09	1995-11-14	Daido Steel Co Ltd	耐食性希土類磁石とその製造方法
JPH09289108A (ja) *	1996-04-19	1997-11-04	Sumitomo Special Metals Co Ltd	密着性のすぐれた電気絶縁性被膜を有するＲ−Ｆｅ−Ｂ系永久磁石とその製造方法

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 011, no. 384 (E - 565) 15 December 1987 (1987-12-15) *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 11 26 December 1995 (1995-12-26) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 03 29 March 1996 (1996-03-29) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 03 27 February 1998 (1998-02-27) *

Also Published As

Publication number	Publication date
MY119680A (en)	2005-06-30
MY117187A (en)	2004-05-31
EP0984464B1 (de)	2004-07-28
EP0984464A2 (de)	2000-03-08
DE69918915D1 (de)	2004-09-02
DE69915554D1 (de)	2004-04-22
DE69915554T2 (de)	2005-01-27
HK1026060A1 (en)	2000-12-01
DE69918915T2 (de)	2005-07-28

Legal Events

Date	Code	Title	Description
2000-01-21	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
2000-03-08	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE FI FR GB NL
2000-03-08	AX	Request for extension of the european patent	Free format text: AL;LT;LV;MK;RO;SI
2000-04-20	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
2000-06-07	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
2000-06-07	AX	Request for extension of the european patent	Free format text: AL;LT;LV;MK;RO;SI
2000-12-06	17P	Request for examination filed	Effective date: 20001012
2001-02-21	AKX	Designation fees paid	Free format text: DE FI FR GB NL
2002-11-27	17Q	First examination report despatched	Effective date: 20021011
2003-10-21	GRAP	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOSNIGR1
2004-02-10	GRAS	Grant fee paid	Free format text: ORIGINAL CODE: EPIDOSNIGR3
2004-06-11	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
2004-07-28	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FI FR GB NL
2004-07-28	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040728 Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040728 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040728
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2004-09-08	RAP2	Party data changed (patent owner data changed or rights of a patent transferred)	Owner name: NEOMAX CO., LTD.
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2004-11-01	NLT2	Nl: modifications (of names), taken from the european patent patent bulletin	Owner name: NEOMAX CO., LTD.
2005-01-03	NLV1	Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
2005-06-03	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
2005-06-03	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
2005-06-15	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20041028
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