H04Q 9/08
Calling by using continuous ac
Official title: Calling by using continuous AC
H04Q9/08 (Calling by using continuous ac) appears on 19 US grants and 10 published applications in this corpus.
Search patents in H04Q- Granted patents
- 19
- Published applications
- 10
- Assignees
- 17
- Inventors
- 40
- Latest grant
- 12 Sep 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 2 | 0 |
| 2005 | 2 | 0 |
| 2006 | 2 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 2 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Sensor device, background noise data transmission method, and background noise data transmission program12 Sep 2023US 11,758,307 B2OMRON Corporation
- Sensor management unit, sensing data distribution system, sensing data evaluation method, and sensing data evaluation program5 Jan 2021US 10,887,675 B2OMRON Corporation
- Whole-space inversion using phase correction method for multi-frequency dielectric array logging tool28 Aug 2018US 10,061,051 B2Baker Hughes, A Ge Company, LLC
- Communication and charging circuitry for a single-coil implantable medical device30 Jun 2015US 9,070,507 B2Boston Scientific Neuromodulation Corporation
- Communication and charging circuitry for a single-coil implantable medical device4 Mar 2014US 8,666,504 B2Boston Scientific Neuromodulation Corporation
- Sensor device, background noise data transmission method, and background noise data transmission program16 Apr 2020US 2020/0118576 A1OMRON Corporation
- Sensor management unit, sensing data distribution system, sensing data evaluation method, and sensing data evaluation program16 Apr 2020US 2020/0120406 A1OMRON Corporation
- Estimating flow velocity in pipes by correlating multi-frequency signals23 May 2019US 2019/0154479 A1
- Whole-space inversion using phase correction method for multi-frequency dielectric array logging tool13 Apr 2017US 2017/0102479 A1Baker Hughes Incorporated
- Communication and Charging Circuitry for a Single-Coil Implantable Medical Device26 Jun 2014US 2014/0176066 A1Boston Scientific Neuromodulation Corporation
Most cited
By later US patents
- Duplex bi-directional multi-mode remote instrument reading and telemetry system478US 5,438,329 AM&FC Holding, LLC · 1995
- Medical telemetry system with wireless and physical communication channels218US 6,150,951 AHewlett-Packard Company · 2000
- Patient monitoring systems having two-way communication62US 6,870,484 B1GE Marquette Medical Systems, Inc. · 2005
- Apparatus for determining the state of each of a plurality of bi-state devices36US 4,268,822 AThe Foxboro Company · 1981
- Remote control system and remote setting system for construction machinery35US 6,782,644 B2Hitachi Construction Machinery Co., Ltd. · 2004