H01R 39/30
Liquid contacts
H01R39/30 (Liquid contacts) appears on 26 US grants and 6 published applications in this corpus.
Search patents in H01R- Granted patents
- 26
- Published applications
- 6
- Assignees
- 16
- Inventors
- 31
- Latest grant
- 1 Oct 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 1 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Rotary connector1 Oct 2019US 10,431,948 B2Aupac Co., Ltd.
- Motor or generator apparatus with ionisable fluid-filled gap17 Jul 2018US 10,027,205 B2Deregallera Holdings Ltd
- Electrical device with low friction contact parts23 May 2017US 9,660,405 B2ABB Schweiz AG
- Ion conducting electrolyte brush additives7 Jul 2009US 7,557,485 B1The United States of America as represented by the Secretary of the Navy
- Solid and liquid hybrid current transferring brush21 Nov 2006US 7,138,743 B1The United States of America as represented by the Secretary of the Navy
- Rotary connector16 Nov 2017US 2017/0331241 A1Aupac Co., Ltd.
- Electrical Device With Low Friction Contact Parts9 Feb 2017US 2017/0040765 A1ABB Schweiz AG
- Apparatus for use as a motor or generator21 Aug 2014US 2014/0232235 A1Deregallera Holdings Ltd
- Slip ring13 Jun 2013US 2013/0147310 A1ALSTOM Technology Ltd
- Hydrodynamic slip ring20 Apr 2006US 2006/0082243 A1Raser Technologies, Inc.
Most cited
By later US patents
- Sliding electrical contact devices20US 4,347,456 AEtat Francais · 1982
- Differentially-pumped ferrofluidic seal19US 5,340,122 AFerrofluidics Corporation · 1994
- Permeable mesh current collector for DC machines15US 4,266,154 AGeneral Electric Company · 1981
- Slip ring mechanism of non-sliding type14US 5,866,967 AKabushiki Kaisha Toshiba · 1999
- Pumped double-pass return liquid metal collector for acyclic machines12US 3,989,968 AGeneral Electric Company · 1976