G01P 21/00
Testing or calibrating of apparatus or devices covered by the preceding groups
G01P21/00 (Testing or calibrating of apparatus or devices covered by the preceding groups) appears on 1,699 US grants and 1,597 published applications in this corpus.
Search patents in G01P- Granted patents
- 1,699
- Published applications
- 1,597
- Assignees
- 854
- Inventors
- 3,715
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 6 | 0 |
| 1978 | 8 | 0 |
| 1979 | 6 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 7 | 0 |
| 1989 | 12 | 0 |
| 1990 | 18 | 0 |
| 1991 | 15 | 0 |
| 1992 | 14 | 0 |
| 1993 | 19 | 0 |
| 1994 | 29 | 0 |
| 1995 | 38 | 0 |
| 1996 | 37 | 0 |
| 1997 | 28 | 0 |
| 1998 | 35 | 0 |
| 1999 | 28 | 0 |
| 2000 | 33 | 0 |
| 2001 | 30 | 10 |
| 2002 | 28 | 24 |
| 2003 | 29 | 24 |
| 2004 | 24 | 21 |
| 2005 | 25 | 27 |
| 2006 | 21 | 22 |
| 2007 | 20 | 32 |
| 2008 | 24 | 26 |
| 2009 | 17 | 45 |
| 2010 | 32 | 52 |
| 2011 | 18 | 54 |
| 2012 | 38 | 54 |
| 2013 | 45 | 82 |
| 2014 | 56 | 90 |
| 2015 | 74 | 99 |
| 2016 | 69 | 111 |
| 2017 | 87 | 99 |
| 2018 | 95 | 85 |
| 2019 | 106 | 91 |
| 2020 | 94 | 98 |
| 2021 | 76 | 95 |
| 2022 | 79 | 83 |
| 2023 | 80 | 87 |
| 2024 | 64 | 75 |
| 2025 | 63 | 65 |
| 2026 | 39 | 46 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Micro-vibration testing device for vital parameter evaluation and a method thereof6 Oct 2026US 12,754,046 B2
- AOM frequency shifter test fixture6 Oct 2026US 12,754,206 B2Rosemount Aerospace Inc.
- System for testing acceleration and force responsive sensors15 Sep 2026US 12,736,429 B2Arizona Board of Regents on behalf of Arizona State University
- Self-test architecture for MEMS accelerometer: humidity-proof, fully differential design and full mass control15 Sep 2026US 12,736,557 B2STMicroelectronics International N. V.
- Wheel speed transducer test adapter8 Sep 2026US 12,730,125 B2The Boeing Company
- Sensor System1 Oct 2026US 2026/0298610 A1Advantec International Limited
- Microelectromechanical system with improved compensation of the radiometric effect1 Oct 2026US 2026/0298965 A1STMicroelectronics International N. V.
- Methods and systems for determining whether an object is in a liquid-surface-wave-influenced environment1 Oct 2026US 2026/0298969 A1Trimble Inc.
- Method to determine vehicle longitudinal acceleration measurement error17 Sep 2026US 2026/0276671 A1Fca US LLC
- Apparatus that supports supported object, control method for the apparatus, and storage medium3 Sep 2026US 2026/0261762 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Transducer in-situ testing apparatus and method396US 6,698,269 B2Oceana Sensor Technologies, Inc. · 2004
- capacitive sensor interface circuit146US 5,751,154 AMitsubishi Denki Kabushiki Kaisha · 1998
- Hybrid terrain-adaptive lower-extremity systems134US 8,419,804 B2iWalk, Inc. · 2013
- Zero motion detection system for improved vehicle navigation system133US 5,991,692 AMagellan DIS, Inc. · 1999
- Capacitive physical-quantity detection apparatus128US 6,257,061 B1Denso Corporation · 2001