H03M 1/645
For position encoding
Official title: {for position encoding, e.g. using resolvers or synchros (H03M1/485 takes precedence)}
H03M1/645 (For position encoding) appears on 105 US grants and 44 published applications in this corpus.
Search patents in H03M- Granted patents
- 105
- Published applications
- 44
- Assignees
- 73
- Inventors
- 178
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 0 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 3 |
| 2003 | 1 | 2 |
| 2004 | 5 | 5 |
| 2005 | 4 | 4 |
| 2006 | 5 | 1 |
| 2007 | 3 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 2 | 3 |
| 2012 | 2 | 3 |
| 2013 | 1 | 3 |
| 2014 | 3 | 1 |
| 2015 | 4 | 2 |
| 2016 | 3 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 4 |
| 2019 | 3 | 0 |
| 2020 | 3 | 2 |
| 2021 | 1 | 1 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Timer-based resolver integral demodulation12 Aug 2025US 12,388,461 B2Hamilton Sundstrand Corporation
- Interconnected inverter and method of manufacturing interconnected inverter14 May 2024US 11,984,909 B2Toyota Jidosha Kabushiki Kaisha
- Resolver converter and motor control device23 Jan 2024US 11,881,806 B2Renesas Electronics Corporation
- Motor control system and semiconductor device4 Jan 2022US 11,214,297 B2Renesas Electronics Corporation
- Resolver signal processing16 Nov 2021US 11,177,987 B1Infineon Technologies AG
- Transformerless demodulation of synchro-resolver26 Feb 2026US 2026/0056035 A1Hamilton Sundstrand Corporation
- Timer-based resolver integral demodulation19 Sep 2024US 2024/0313798 A1Hamilton Sundstrand Corporation
- Resolver converter and motor control device22 Sep 2022US 2022/0302858 A1Renesas Electronics Corporation
- Interconnected inverter and method of manufacturing interconnected inverter15 Sep 2022US 2022/0294464 A1Toyota Jidosha Kabushiki Kaisha
- Resolver signal processing circuit11 Feb 2021US 2021/0041508 A1Denso Corporation
Most cited
By later US patents
- Signal processing apparatus and method125US 6,788,221 B1Synaptics (UK) Limited · 2004
- Capacitance-type measuring device for absolute measurement of positions92US 4,879,508 AMitutoyo Corporation · 1989
- Capacitance-type measuring device for absolute measurement of positions81US 5,053,715 AMitutoyo Corporation · 1991
- Absolute position sensor having multi-layer windings of different pitches providing respective indications of phase proportional to displacement76US 4,893,077 A1990
- Electrostatic position-measuring transducer61US 3,961,318 AInductosyn Corporation · 1976