H03M 1/668
Servo-type converters
Official title: {Servo-type converters}
H03M1/668 (Servo-type converters) appears on 14 US grants and 5 published applications in this corpus.
Search patents in H03M- Granted patents
- 14
- Published applications
- 5
- Assignees
- 13
- Inventors
- 20
- Latest grant
- 3 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Wide dynamic range current measurement front-end3 May 2022US 11,320,468 B2The Regents of the University of California
- Digital to analog converter with iterative stepping to each output value26 Mar 2019US 10,243,580 B1Southwest Research Institute
- Rotation detector and rotation detection method22 Aug 2017US 9,742,425 B2Ricoh Company, Ltd.
- Digital-to-analog converter with switching elements controlled by a microcontroller28 Mar 2017US 9,608,660 B2Renesas Electronics Europe GmbH
- Circuit and lighting system for dimming an illuminant31 Mar 2015US 8,994,290 B2Tridonic GmbH & Co KG
- Wide dynamic range current measurement front-end17 Sep 2020US 2020/0292594 A1The Regents of the University of California
- Digital-to-Analog Converter3 Mar 2016US 2016/0065233 A1Renesas Electronics Europe GmbH
- Rotation detector and rotation detection method15 Oct 2015US 2015/0292907 A1Ricoh Company, Ltd.
- Circuit and lighting system for dimming an illuminant5 Apr 2012US 2012/0081037 A1Tridonic GmbH & Co KG
- Digital-analog converter17 Mar 2005US 2005/0057386 A1Neuro Solution Corp.
Most cited
By later US patents
- Method and apparatus for measuring the rotation of a work table26US 4,358,723 A1982
- Non-linear digital-to-analog converter for servo circuit14US 4,020,485 AAmpex Corporation · 1977
- Digital-to-analog converter with temperature compensation14US 4,766,415 ASiemens Aktiengesellschaft · 1988
- Digital-to-analog converter and sensor-characteristic adjustment circuit8US 5,781,141 ADenso Corporation · 1998
- Digital decoding using dynamically determined tracking threshold values6US 5,298,901 AStorage Technology Corporation · 1994