G01R 31/2822
Of microwave or radiofrequency circuits
Official title: {of microwave or radiofrequency circuits (of attenuation, gain, e.g. using network analyzers G01R27/28)}
G01R31/2822 (Of microwave or radiofrequency circuits) appears on 840 US grants and 772 published applications in this corpus.
Search patents in G01R- Granted patents
- 840
- Published applications
- 772
- Assignees
- 415
- Inventors
- 1,759
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 8 | 0 |
| 1996 | 12 | 0 |
| 1997 | 6 | 0 |
| 1998 | 11 | 0 |
| 1999 | 12 | 0 |
| 2000 | 19 | 0 |
| 2001 | 19 | 13 |
| 2002 | 16 | 16 |
| 2003 | 17 | 15 |
| 2004 | 20 | 18 |
| 2005 | 15 | 26 |
| 2006 | 27 | 40 |
| 2007 | 23 | 32 |
| 2008 | 19 | 34 |
| 2009 | 23 | 24 |
| 2010 | 27 | 29 |
| 2011 | 15 | 21 |
| 2012 | 24 | 25 |
| 2013 | 16 | 17 |
| 2014 | 19 | 23 |
| 2015 | 25 | 30 |
| 2016 | 28 | 35 |
| 2017 | 26 | 17 |
| 2018 | 31 | 31 |
| 2019 | 49 | 53 |
| 2020 | 51 | 41 |
| 2021 | 57 | 33 |
| 2022 | 39 | 47 |
| 2023 | 54 | 42 |
| 2024 | 39 | 35 |
| 2025 | 46 | 49 |
| 2026 | 24 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vapor cells having optical windows with multilayer coatings15 Sep 2026US 12,736,570 B2Quantum Valley Ideas Laboratories
- Test fixture set and testing method15 Sep 2026US 12,736,572 B2Universal Scientific Industrial (Shanghai) Co., Ltd.
- Test and/or measurement system1 Sep 2026US 12,724,063 B2Rohde & Schwarz GmbH & Co.KG
- Test and/or measurement device with noise figure functionality, and corresponding method25 Aug 2026US 12,716,935 B2Rohde & Schwarz GmbH & Co.KG
- Method and system for aligning test environments11 Aug 2026US 12,704,536 B2MediaTek Singapore Pte. Ltd.
- Work string tubing connection restoration24 Sep 2026US 2026/0284768 A1Postle Industries, Inc.
- Low cost on-chip built-in self-test architecture for millimeter wave radio freqency integrated circuit24 Sep 2026US 2026/0291625 A1Samsung Electronics Co., Ltd.
- Millimeter-wave vector network analyzer17 Sep 2026US 2026/0276674 A1Ohio State Innovation Foundation
- Techniques For Reduction Of Degradation In Channels Caused By Bias Temperature Instability20 Aug 2026US 2026/0246456 A1Altera Corporation
- Testing rf signal content and power20 Aug 2026US 2026/0246540 A1Teradyne, Inc.
Most cited
By later US patents
- Method and apparatus for wireless radio frequency testing of RFID integrated circuits290US 6,236,223 B1Intermec IP Corp. · 2001
- Method and apparatus for testing RFID tags218US 6,104,291 AIntermec IP Corp. · 2000
- Methods for the measurement of the frequency dependent complex propagation matrix, impedance matrix and admittance matrix of coupled transmission lines166US 5,502,392 AInternational Business Machines Corporation · 1996
- Low-current probe card with reduced triboelectric current generating cables141US 5,729,150 ACascade Microtech, Inc. · 1998
- Baseband time-domain waveform measurement method135US 6,211,663 B1The Aerospace Corporation · 2001