G01R 23/145
By heterodyning or by beat-frequency comparison with the harmonic of an oscillator
Official title: {by heterodyning or by beat-frequency comparison with the harmonic of an oscillator}
G01R23/145 (By heterodyning or by beat-frequency comparison with the harmonic of an oscillator) appears on 25 US grants and 19 published applications in this corpus.
Search patents in G01R- Granted patents
- 25
- Published applications
- 19
- Assignees
- 16
- Inventors
- 51
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 0 |
| 2009 | 2 | 3 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 2 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 3 |
| 2022 | 0 | 1 |
| 2023 | 2 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and devices of 425NM wavelength reference construction based on fluorescence-induced effect14 Jul 2026US 12,680,871 B2National Institute of Metrology, China
- Anomaly detection apparatus, method and computer-readable medium23 Jul 2024US 12,044,714 B2NEC Corporation
- Making determination of inductance-change immune to changes in environmental conditions24 Oct 2023US 11,796,577 B2Ningbo Aura Semiconductor Co., Limited
- Frequency detection circuit15 Aug 2023US 11,726,118 B2Mitsubishi Electric Corporation
- Apparatus and method for measuring frequency of signal23 Feb 2021US 10,931,294 B2Agency for Defense Development
- Methods and devices of 425nm wavelength reference construction based on fluorescence-induced effect26 Feb 2026US 2026/0056053 A1National Institute of Metrology, China
- Making determination of inductance-change immune to changes in environmental conditions10 Mar 2022US 2022/0074979 A1Ningbo Aura Semiconductor Co., Limited
- Frequency detection circuit7 Oct 2021US 2021/0311098 A1Mitsubishi Electric Corporation
- Anomaly detection apparatus, method and computer-readable medium12 Aug 2021US 2021/0247427 A1NEC Corporation
- Apparatus and method for measuring frequency of signal14 Jan 2021US 2021/0013897 A1Agency for Defense Development
Most cited
By later US patents
- Communicating with implanted wireless sensor155US 7,245,117 B1CardioMEMS, Inc. · 2007
- Communicating with an implanted wireless sensor127US 7,550,978 B2CardioMEMS, Inc. · 2009
- Communicating with an implanted wireless sensor108US 7,679,355 B2CardioMEMS, Inc. · 2010
- Communicating with an implanted wireless sensor107US 7,498,799 B2CardioMEMS, Inc. · 2009
- Communicating with an implanted wireless sensor106US 7,839,153 B2CardioMEMS, Inc. · 2010