G01R 23/14
By heterodyning
Official title: by heterodyning; by beat-frequency comparison
G01R23/14 (By heterodyning) appears on 91 US grants and 48 published applications in this corpus.
Search patents in G01R- Granted patents
- 91
- Published applications
- 48
- Assignees
- 59
- Inventors
- 168
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 0 |
| 2003 | 0 | 2 |
| 2004 | 2 | 4 |
| 2005 | 2 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 3 |
| 2008 | 3 | 1 |
| 2009 | 2 | 3 |
| 2010 | 4 | 7 |
| 2011 | 5 | 1 |
| 2012 | 2 | 2 |
| 2013 | 2 | 0 |
| 2014 | 2 | 3 |
| 2015 | 2 | 1 |
| 2016 | 2 | 0 |
| 2017 | 1 | 1 |
| 2018 | 2 | 4 |
| 2019 | 4 | 4 |
| 2020 | 2 | 1 |
| 2021 | 3 | 4 |
| 2022 | 1 | 2 |
| 2023 | 4 | 1 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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
- Circuit for determining the frequency of a signal21 Oct 2025US 12,449,455 B2Infineon Technologies AG
- Anomaly detection apparatus, method and computer-readable medium23 Jul 2024US 12,044,714 B2NEC Corporation
- Method for distinguishing a signal and its image5 Mar 2024US 11,921,152 B2
- Making determination of inductance-change immune to changes in environmental conditions24 Oct 2023US 11,796,577 B2Ningbo Aura Semiconductor Co., Limited
- Phase characteristic measurement apparatus, signal generator and signal analyzer having same, and phase characteristic measurement method4 Jun 2026US 2026/0153543 A1Anritsu Corporation
- Methods and devices of 425nm wavelength reference construction based on fluorescence-induced effect26 Feb 2026US 2026/0056053 A1National Institute of Metrology, China
- Circuit for determining the frequency of a signal2 May 2024US 2024/0142503 A1Infineon Technologies AG
- Method for distinguishing a signal and its image25 May 2023US 2023/0160947 A1
- Interference cancellation device, control circuit, storage medium, and interference center frequency estimation method13 Oct 2022US 2022/0329274 A1Mitsubishi Electric Corporation
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