H04Q 9/12
Using combinations of frequencies
Official title: using combinations of frequencies
H04Q9/12 (Using combinations of frequencies) appears on 6 US grants and 4 published applications in this corpus.
Search patents in H04Q- Granted patents
- 6
- Published applications
- 4
- Assignees
- 6
- Inventors
- 13
- Latest grant
- 28 Aug 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 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 | 1 | 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 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- 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
- Transmitter tolerant to crystal variations13 Jan 2004US 6,677,862 B1SchlumbergerSema Inc.
- Interrogated transponder system14 Mar 1978US 4,079,414 ASkiatron Electronics & Television 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
- Communication and Charging Circuitry for a Single-Coil Implantable Medical Device25 Apr 2013US 2013/0103115 A1Boston Scientific Neuromodulation Corporation
Most cited
By later US patents
- Interrogated transponder system28US 4,079,414 ASkiatron Electronics & Television Corporation · 1978
- Communication and charging circuitry for a single-coil implantable medical device22US 8,666,504 B2Boston Scientific Neuromodulation Corporation · 2014
- Transmitter tolerant to crystal variations15US 6,677,862 B1SchlumbergerSema Inc. · 2004
- Communication and charging circuitry for a single-coil implantable medical device15US 9,070,507 B2Boston Scientific Neuromodulation Corporation · 2015
- Dual tone selector with answerback signalling9US 4,064,367 AWestinghouse Air Brake Company · 1977