IDiyas

For the Inventor, By the Inventor

Gelnhausen, Germany

Roger Wolmer

USPTO Granted Patents = 12


Average Co-Inventor Count = 4.1

ph-index = 6

Forward Citations = 75(Granted Patents)


Location History:

  • Frankfurt-am-Main, DE (1982 - 1984)
  • Hanau, DE (1989 - 1998)
  • Gelnhausen, DE (1998 - 2002)
  • Hanau Groβauheim, DE (2009)
  • Hanau-Grossauheim, DE (2010)

Company Filing History:

goldMedal9 out of 1,678 
 
Degussa Aktiengesellschaft
 patents
silverMedal2 out of 428 
 
Umicore Ag & Co Kg
 patents
bronzeMedal1 out of 21 
 
Dmc, Inc
 patents

Years Active: 1982-2010

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12 patents (USPTO):Explore Patents
1. 7754280 - Silver/carbon-based material and method for producing the same for contact material (2010-07-13),
2. 7566437 - Process for manufacture of silver-based composite powders for electrical contact materials and composite powders so produced (2009-07-28),
3. 6409794 - Method for producing composite powders based on silver-tin oxide, the composite powders so produced, and the use of such powders to produce electrical contact materials by powder metallurgy techniques (2002-06-25),
4. 5985440 - Sintered silver-iron material for electrical contacts and process for (1999-11-16),
5. 5841044 - Silver-iron material for electrical switching contacts (I) (1998-11-24),
6. 5808213 - Silver-iron material for electrical switching contacts (II) (1998-09-15),
7. 5798468 - Sintering material containing silver-tin oxide for electrical contacts (1998-08-25),
8. 5728194 - Silver-iron material for electrical switching contacts (III) (1998-03-17),
9. 4859238 - Silver-iron material for electrical contacts (1989-08-22),
10. 4456662 - Electrical contact piece (1984-06-26),
11. 4410491 - Material for electrical contacts (1983-10-18),
12. 4341556 - Material for electrical contacts (1982-07-27),
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