H04J 3/20
Time-division multiplex systems: using resonant transfer
Official title: using resonant transfer
H04J3/20 (Time-division multiplex systems: using resonant transfer) appears on 7 US grants and 1 published applications in this corpus.
Search patents in H04J- Granted patents
- 7
- Published applications
- 1
- Assignees
- 7
- Inventors
- 11
- Latest grant
- 12 Aug 2014
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Apparatus and method for transmitting a plurality of information signals in flexible time-division multiplexing12 Aug 2014US 8,804,768 B2Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.
- Data transmission using switched resonance19 Feb 1991US 4,995,054 A
- Offset-compensated switched-capacitor filter for TDM multichannel analog signals17 May 1988US 4,745,594 ANEC Corporation
- Filter for electric signals consisting of switches, capacitors and amplifiers26 Oct 1982US 4,356,464 ASiemens Aktiengesellschaft
- Sampling gate for TDM telecommunication system18 Aug 1981US 4,285,057 ASocieta Italiana Telecomunicazioni Siemens S.p.A.
Most cited
By later US patents
- Filter for electric signals consisting of switches, capacitors and amplifiers7US 4,356,464 ASiemens Aktiengesellschaft · 1982
- Data transmission using switched resonance6US 4,995,054 A1991
- Quasi-resonant transfer conferencing circuit3US 4,024,349 ABell Telephone Laboratories, Incorporated · 1977
- Offset-compensated switched-capacitor filter for TDM multichannel analog signals3US 4,745,594 ANEC Corporation · 1988
- Sampling gate for TDM telecommunication system2US 4,285,057 ASocieta Italiana Telecomunicazioni Siemens S.p.A. · 1981