H01R 39/045
The commutators being made of carbon
Official title: {the commutators being made of carbon}
H01R39/045 (The commutators being made of carbon) appears on 35 US grants and 25 published applications in this corpus.
Search patents in H01R- Granted patents
- 35
- Published applications
- 25
- Assignees
- 23
- Inventors
- 66
- Latest grant
- 12 Feb 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 3 |
| 2002 | 1 | 2 |
| 2003 | 6 | 1 |
| 2004 | 2 | 3 |
| 2005 | 2 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 1 | 4 |
| 2011 | 0 | 1 |
| 2012 | 2 | 2 |
| 2013 | 1 | 0 |
| 2014 | 2 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 3 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Commutator, motor using same and method of manufacturing the commutator12 Feb 2019US 10,205,293 B2Johnson Electric International AG
- Carbon commutator and a method for production thereof5 May 2015US 9,024,504 B2Denso Corporation
- Method for producing a flat commutator, and flat commutator18 Nov 2014US 8,887,378 B2Kolektor Group D.O.O.
- Commutator4 Nov 2014US 8,878,417 B2Johnson Electric S. A.
- Commutation device and electric machine20 Aug 2013US 8,513,852 B2Robert Bosch GmbH
- Disk blank for producing commutator bars30 Aug 2018US 2018/0248328 A1Schunk Carbon Technology GmbH
- Electrical machine with brush and commutator having a specific distribution of electrical conductivity for suppression of sparking14 Jun 2018US 2018/0166954 A1Ac2T Research GmbH
- Use of a carbon composite material for manufacturing electrical contact elements for a fuel pump, and contact element1 Mar 2018US 2018/0062338 A1
- Commutator, motor using same and method of manufacturing the commutator21 Sep 2017US 2017/0271832 A1Johnson Electric S. A.
- Carbon Product8 Oct 2015US 2015/0284251 A1Johnson Electric S. A.
Most cited
By later US patents
- Flat commutator and method for its production45US 5,157,299 AKautt & Bux KG · 1992
- Carbon commutator28US 5,175,463 AKirkwood Industries · 1992
- Electric motor with carbon track commutator25US 5,955,812 AJoyal Products, Inc. · 1999
- Carbon commutator22US 5,932,949 AMcCord Winn Textron Inc. · 1999
- Method of making a carbon commutator20US 5,255,426 AKirkwood Industries · 1993