H04Q 2213/178
Control signals
Official title: Control signals, e.g. also service connection
H04Q2213/178 (Control signals) appears on 6 US grants and 0 published applications in this corpus.
Search patents in H04Q- Granted patents
- 6
- Published applications
- 0
- Assignees
- 6
- Inventors
- 10
- Latest grant
- 6 Oct 1998
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Digital communication device6 Oct 1998US 5,818,870 ACanon Kabushiki Kaisha
- Bus line traffic control adapter apparatus16 Sep 1997US 5,668,799 ANEC Corporation
- Facsimile terminal equipment having communication speed switch19 Dec 1995US 5,477,340 AFujitsu Limited
- ISDN terminal system3 May 1994US 5,309,442 AKabushiki Kaisha Toshiba
- Protocol selector and protocol selection method25 Aug 1992US 5,142,528 AHitachi, Ltd.
No published applications in this class yet.
Most cited
By later US patents
- Protocol selector and protocol selection method84US 5,142,528 AHitachi, Ltd. · 1992
- Data terminal equipment and data transmission control method40US 5,012,470 ARicoh Company, Ltd. · 1991
- Digital communication device15US 5,818,870 ACanon Kabushiki Kaisha · 1998
- ISDN terminal system6US 5,309,442 AKabushiki Kaisha Toshiba · 1994
- Facsimile terminal equipment having communication speed switch5US 5,477,340 AFujitsu Limited · 1995