G01L 1/20
Measuring force or stress, in general: by measuring variations in ohmic resistance
Official title: by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids (of piezo-resistive materials G01L1/18); by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
G01L1/20 (Measuring force or stress, in general: by measuring variations in ohmic resistance) appears on 3,325 US grants and 3,245 published applications in this corpus.
Search patents in G01L- Granted patents
- 3,325
- Published applications
- 3,245
- Assignees
- 1,794
- Inventors
- 7,554
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 26 | 0 |
| 1977 | 21 | 0 |
| 1978 | 20 | 0 |
| 1979 | 26 | 0 |
| 1980 | 36 | 0 |
| 1981 | 28 | 0 |
| 1982 | 32 | 0 |
| 1983 | 25 | 0 |
| 1984 | 43 | 0 |
| 1985 | 38 | 0 |
| 1986 | 37 | 0 |
| 1987 | 38 | 0 |
| 1988 | 46 | 0 |
| 1989 | 35 | 0 |
| 1990 | 21 | 0 |
| 1991 | 33 | 0 |
| 1992 | 29 | 0 |
| 1993 | 32 | 0 |
| 1994 | 34 | 0 |
| 1995 | 22 | 0 |
| 1996 | 28 | 0 |
| 1997 | 24 | 0 |
| 1998 | 29 | 0 |
| 1999 | 35 | 0 |
| 2000 | 29 | 0 |
| 2001 | 30 | 8 |
| 2002 | 38 | 44 |
| 2003 | 37 | 50 |
| 2004 | 44 | 43 |
| 2005 | 36 | 55 |
| 2006 | 34 | 47 |
| 2007 | 32 | 51 |
| 2008 | 45 | 52 |
| 2009 | 25 | 61 |
| 2010 | 58 | 67 |
| 2011 | 48 | 61 |
| 2012 | 45 | 68 |
| 2013 | 55 | 70 |
| 2014 | 72 | 121 |
| 2015 | 80 | 167 |
| 2016 | 112 | 138 |
| 2017 | 162 | 195 |
| 2018 | 131 | 203 |
| 2019 | 178 | 217 |
| 2020 | 186 | 255 |
| 2021 | 201 | 262 |
| 2022 | 211 | 250 |
| 2023 | 200 | 221 |
| 2024 | 195 | 215 |
| 2025 | 178 | 184 |
| 2026 | 125 | 140 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electrically patterned polycrystalline diamond compact for sensing applications6 Oct 2026US 12,754,083 B2Schlumberger Technology Corporation
- Sensor for multifunctional sensing29 Sep 2026US 12,748,000 B2Case Western Reserve University
- Force detection device29 Sep 2026US 12,748,001 B2Japan Display Inc.
- Transducer geometry for amplification of axial load response and suppression of non-axial response29 Sep 2026US 12,748,015 B2National Aeronautics and Space Administration Langley Research Center
- Method and apparatus for determining a force applied to a sample during an optical interrogation technique29 Sep 2026US 12,748,046 B2Thermo Electron Scientific Instruments LLC
- Sensor for an article of footwear8 Oct 2026US 2026/0305756 A1NIKE, Inc.
- Reaction force measuring plate and reaction force measuring system8 Oct 2026US 2026/0305982 A1
- Single-Beam, 6-axis Force/Torque Sensor8 Oct 2026US 2026/0309557 A1ATI Industrial Automation, Inc.
- Pressure distribution sensing device8 Oct 2026US 2026/0309558 A1Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
- Sensor System1 Oct 2026US 2026/0298610 A1Advantec International Limited
Most cited
By later US patents
- Physiological sensing device431US 6,491,647 B1Active Signal Technologies, Inc. · 2002
- Apparatus and method for monitoring contact pressure between body parts and contact surfaces415US 5,253,656 A1993
- Flexible tactile sensor for measuring foot pressure distributions and for gaskets346US 5,033,291 ATekscan, Inc. · 1991
- Touch sensor and controller339US 5,159,159 A1992
- Knee joint load measuring instrument and joint prosthesis323US 5,197,488 AN. K. Biotechnical Engineering Company · 1993