H04Q 2213/31
Delay devices
Official title: Delay devices; Circuits, e.g. shift memories
H04Q2213/31 (Delay devices) appears on 6 US grants and 3 published applications in this corpus.
Search patents in H04Q- Granted patents
- 6
- Published applications
- 3
- Assignees
- 4
- Inventors
- 9
- Latest grant
- 6 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 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 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 2 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Optical switch with all-optical memory buffer6 May 2025US 12,294,817 B2NEWPHOTONICS Ltd.
- Optical switch with all-optical memory buffer26 Mar 2024US 11,943,571 B2NEWPHOTONICS Ltd.
- Telecommunication terminal operating at alternative data throughput rates14 May 1996US 5,517,490 ASociete D'Applications Generales D/Electricite et de Mecanique Sagem
- ISDN terminal adapter using reduced memory for timing difference compensation9 Apr 1996US 5,506,845 ANEC Corporation
- Telephone apparatus and a method of controlling same8 Oct 1991US 5,056,083 AKabushiki Kaisha Toshiba
Most cited
By later US patents
- Method and apparatus for priority control of incoming calls at ISDN terminals29US 4,958,153 ANEC Corporation · 1990
- ISDN terminal adapter using reduced memory for timing difference compensation4US 5,506,845 ANEC Corporation · 1996
- Optical switch with all-optical memory buffer1US 11,943,571 B2NEWPHOTONICS Ltd. · 2024
- Telephone apparatus and a method of controlling same1US 5,056,083 AKabushiki Kaisha Toshiba · 1991