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Roger Wolmer
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Hanau, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Silver/carbon-based material and method for producing the same for...
Patent number
7,754,280
Issue date
Jul 13, 2010
Umicore AG & Co. KG
Bernd Kempf
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Process for manufacture of silver-based composite powders for elect...
Patent number
7,566,437
Issue date
Jul 28, 2009
Umicore AG & Co. KG
Dan Goia
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method for producing composite powders based on silver-tin oxide, t...
Patent number
6,409,794
Issue date
Jun 25, 2002
DMC2 Degussa Metals Catalysts Cerdec AG
Roger Wolmer
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Sintered silver-iron material for electrical contacts and process f...
Patent number
5,985,440
Issue date
Nov 16, 1999
Degussa Aktiengesellschaft
Wolfgang Weise
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Silver-iron material for electrical switching contacts (I)
Patent number
5,841,044
Issue date
Nov 24, 1998
Degussa Aktiengesellschaft
Wolfgang Weise
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Silver-iron material for electrical switching contacts (II)
Patent number
5,808,213
Issue date
Sep 15, 1998
Degussa Aktiengesellschaft
Wolfgang Weise
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Sintering material containing silver-tin oxide for electrical conta...
Patent number
5,798,468
Issue date
Aug 25, 1998
Degussa Aktiengesellschaft
Wolfgang Weise
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Silver-iron material for electrical switching contacts (III)
Patent number
5,728,194
Issue date
Mar 17, 1998
Degussa Aktiengesellschaft
Wolfgang Weise
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Silver-iron material for electrical contacts
Patent number
4,859,238
Issue date
Aug 22, 1989
Degussa Aktiengesellschaft
Wolfgang Weise
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Electrical contact piece
Patent number
4,456,662
Issue date
Jun 26, 1984
Degussa Aktiengesellschaft
Willi Malikowski
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Material for electrical contacts
Patent number
4,410,491
Issue date
Oct 18, 1983
Degussa Aktiengesellschaft
Bohm Wolfgang
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Material for electrical contacts
Patent number
4,341,556
Issue date
Jul 27, 1982
Degussa Aktiengesellschaft
Wolfgang Bohm
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Patents Applications
last 30 patents
Information
Patent Application
Silver/Carbon-Based Material and Method for Producing the Same
Publication number
20080241543
Publication date
Oct 2, 2008
UMICORE AG & CO. KG
Bernd Kempf
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Process for manufacture of silver-based composite powders for elect...
Publication number
20070228334
Publication date
Oct 4, 2007
Umicore AG & Co. KG
Dan Goia
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Method for producing composite powders based on silver-tin oxide, t...
Publication number
20010051102
Publication date
Dec 13, 2001
Roger Wolmer
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...