H04Q 2213/339
Ciphering/encryption
H04Q2213/339 (Ciphering/encryption) appears on 4 US grants and 0 published applications in this corpus.
Search patents in H04Q- Granted patents
- 4
- Published applications
- 0
- Assignees
- 2
- Inventors
- 8
- Latest grant
- 16 Mar 2004
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Process and device for transmitting confidential connection establishment and service information between subscriber terminals and one or more digital exchanges16 Mar 2004US 6,708,275 B1Deutsche Telekom AG
- Process and device for authenticating subscribers to digital exchanges13 Nov 2001US 6,317,830 B1Deutsche Telekom AG
- ISDN-based high speed communication system3 Nov 1998US 5,832,240 A
- Method for exchanging information between ISDN terminal equipment, that is, data terminals, terminals, or telecommunication systems3 Sep 1996US 5,553,146 ASiemens Aktiengesellschaft
No published applications in this class yet.
Most cited
By later US patents
- ISDN-based high speed communication system39US 5,832,240 A1998
- Process and device for authenticating subscribers to digital exchanges20US 6,317,830 B1Deutsche Telekom AG · 2001
- Method for exchanging information between ISDN terminal equipment, that is, data terminals, terminals, or telecommunication systems7US 5,553,146 ASiemens Aktiengesellschaft · 1996
- Process and device for transmitting confidential connection establishment and service information between subscriber terminals and one or more digital exchanges4US 6,708,275 B1Deutsche Telekom AG · 2004