H04Q 9/06
Calling by using amplitude or polarity of dc
Official title: Calling by using amplitude or polarity of DC
H04Q9/06 (Calling by using amplitude or polarity of dc) appears on 13 US grants and 12 published applications in this corpus.
Search patents in H04Q- Granted patents
- 13
- Published applications
- 12
- Assignees
- 11
- Inventors
- 14
- Latest grant
- 5 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 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 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 6 | 6 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Grid telemetry fingerprint22 Sep 2020US 10,784,715 B2LO3 Energy Inc.
- High data rate multilevel clock recovery system12 Sep 2017US 9,762,423 B2International Business Machines Corporation
- Grid telemetry fingerprint4 Jun 2026US 2026/0155674 A1LO3 Energy Inc.
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Most cited
By later US patents
- Method of and apparatus for selectively controlling a plurality of remotely located loads15US 3,964,023 AAnvar Agence Nationale de Valorisation de la Recherche · 1976
- High data rate multilevel clock recovery system13US 9,584,345 B1International Business Machines Corporation · 2017
- Night setback-morning ready control system for unit ventilators8US 4,077,566 AInternational Telephone and Telegraph Corporation · 1978
- Grid telemetry fingerprint4US 10,784,715 B2LO3 Energy Inc. · 2020
- High data rate multilevel clock recovery system4US 9,762,423 B2International Business Machines Corporation · 2017