H01R 39/20
Characterised by the material thereof
Official title: characterised by the material thereof
H01R39/20 (Characterised by the material thereof) appears on 131 US grants and 131 published applications in this corpus.
Search patents in H01R- Granted patents
- 131
- Published applications
- 131
- Assignees
- 94
- Inventors
- 329
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 5 |
| 2003 | 2 | 7 |
| 2004 | 9 | 5 |
| 2005 | 4 | 8 |
| 2006 | 6 | 9 |
| 2007 | 4 | 4 |
| 2008 | 3 | 5 |
| 2009 | 5 | 5 |
| 2010 | 3 | 3 |
| 2011 | 1 | 2 |
| 2012 | 2 | 2 |
| 2013 | 2 | 4 |
| 2014 | 2 | 7 |
| 2015 | 1 | 6 |
| 2016 | 6 | 2 |
| 2017 | 2 | 8 |
| 2018 | 3 | 5 |
| 2019 | 7 | 6 |
| 2020 | 6 | 9 |
| 2021 | 7 | 5 |
| 2022 | 5 | 7 |
| 2023 | 5 | 5 |
| 2024 | 6 | 5 |
| 2025 | 3 | 4 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Contact structure and brush motor16 Jun 2026US 12,658,772 B2Mabuchi Motor Co., Ltd.
- Collection device for collecting electrical currents, and machine comprising a collection device of this kind10 Mar 2026US 12,573,922 B2Schunk Carbon Technology GmbH
- Contacting device for transmitting electric currents, and machines comprising such a contacting device20 Jan 2026US 12,531,460 B2Schunk Carbon Technology GmbH
- Direct-current motor16 Dec 2025US 12,500,471 B2Denso Corporation
- Shunt assembly29 Apr 2025US 12,289,021 B2Schaeffler Technologies AG & Co. KG
- Embedded conductive device16 Jul 2026US 2026/0204857 A1Wujiang Tianlong Electronic Machinery Equinpment Co., Ltd.
- Grounding brush, a grounding brush unit and a device2 Apr 2026US 2026/0095079 A1
- Discharge device for discharging electric currents, and machine comprising a discharge device of this kind11 Dec 2025US 2025/0379407 A1
- Sliding contact material for motor brush, motor brush, and direct current motor13 Nov 2025US 2025/0350080 A1Mabuchi Motor Co., Ltd.
- Systems and methods to mitigate electrical voltage on a rotating shaft immersed in oil17 Jul 2025US 2025/0233493 A1Illinois Tool Works Inc.
Most cited
By later US patents
- Fiber brush slip ring assembly34US 4,398,113 ALitton Systems, Inc. · 1983
- Management of contact spots between an electrical brush and substrate25US 6,753,635 B2Hi Per Con · 2004
- Continuous metal fiber brushes23US 6,245,440 B1University of Virginia · 2001
- Intercalated graphite containing electrical motor brushes and other contacts21US 4,799,957 AIntercal Company · 1989
- Sliding-type electric component having carbon fiber contact16US 6,794,984 B2Alps Electric Co., Ltd. · 2004