H04Q 2213/28
Call transfer
H04Q2213/28 (Call transfer) appears on 6 US grants and 0 published applications in this corpus.
Search patents in H04Q- Granted patents
- 6
- Published applications
- 0
- Assignees
- 4
- Inventors
- 9
- Latest grant
- 29 Jul 1997
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Digital telephone29 Jul 1997US 5,652,753 AAlcatel
- Communications device to establish call in ISDN system17 Jun 1997US 5,640,449 AInternational Business Machines Corporation
- Personal communication system having options and notifications26 Dec 1995US 5,479,496 AKabushiki Kaisha Toshiba
- Personal communication system answerable by proxy14 Nov 1995US 5,467,389 AKabushiki Kaisha Toshiba
- Facsimile apparatus and facsimile system11 Oct 1994US 5,355,230 ACanon Kabushiki Kaisha
No published applications in this class yet.
Most cited
By later US patents
- Personal communication system having options and notifications30US 5,479,496 AKabushiki Kaisha Toshiba · 1995
- Communications device to establish call in ISDN system24US 5,640,449 AInternational Business Machines Corporation · 1997
- Personal communication system9US 5,309,511 AKabushiki Kaisha Toshiba · 1994
- Facsimile apparatus and facsimile system8US 5,355,230 ACanon Kabushiki Kaisha · 1994
- Personal communication system answerable by proxy6US 5,467,389 AKabushiki Kaisha Toshiba · 1995