G01L 13/02
Devices or apparatus for measuring differences of two or more fluid pressure
Official title: using elastically-deformable members or pistons as sensing elements
G01L13/02 (Devices or apparatus for measuring differences of two or more fluid pressure) appears on 616 US grants and 495 published applications in this corpus.
Search patents in G01L- Granted patents
- 616
- Published applications
- 495
- Assignees
- 282
- Inventors
- 1,042
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 11 | 0 |
| 1978 | 10 | 0 |
| 1979 | 9 | 0 |
| 1980 | 7 | 0 |
| 1981 | 10 | 0 |
| 1982 | 13 | 0 |
| 1983 | 9 | 0 |
| 1984 | 8 | 0 |
| 1985 | 12 | 0 |
| 1986 | 8 | 0 |
| 1987 | 11 | 0 |
| 1988 | 14 | 0 |
| 1989 | 8 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 8 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 2 |
| 2002 | 6 | 8 |
| 2003 | 16 | 3 |
| 2004 | 4 | 8 |
| 2005 | 4 | 10 |
| 2006 | 9 | 12 |
| 2007 | 11 | 5 |
| 2008 | 9 | 10 |
| 2009 | 10 | 12 |
| 2010 | 11 | 21 |
| 2011 | 15 | 11 |
| 2012 | 16 | 15 |
| 2013 | 14 | 20 |
| 2014 | 11 | 25 |
| 2015 | 19 | 33 |
| 2016 | 24 | 29 |
| 2017 | 33 | 38 |
| 2018 | 28 | 48 |
| 2019 | 46 | 25 |
| 2020 | 23 | 31 |
| 2021 | 28 | 33 |
| 2022 | 27 | 21 |
| 2023 | 22 | 23 |
| 2024 | 19 | 25 |
| 2025 | 23 | 16 |
| 2026 | 10 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- MEMS pressure sensor11 Aug 2026US 12,704,427 B2MEI Micro, Inc.
- Fluid pressure detector11 Aug 2026US 12,704,429 B1Safran Aerosystems Hydraulics
- Pressure sensor package with a sensor die21 Jul 2026US 12,687,445 B2TE Connectivity Solutions GmbH
- Creep/deformation compensation for sensors16 Jun 2026US 12,656,199 B2Ezmems Ltd.
- Pressure sensing device19 May 2026US 12,631,508 B2Infineon Technologies Dresden GmbH
- Resettable pressure differential gauge with memory17 Sep 2026US 2026/0276467 A1Mikropor Makina Sanayi Ve Ticaret Anonim Sirketi
- System for measuring differential pressure in an underwater environment10 Sep 2026US 2026/0266677 A1Centre National de la Recherche Scientifique (CNRS)
- Pressure sensing device20 Aug 2026US 2026/0243618 A1Infineon Technologies Dresden GmbH
- Method and apparatus for providing membrane pattern built-in differential piezoresistive pressure sensors30 Jul 2026US 2026/0219120 A1Posifa Technologies Inc.
- Visual indicator of vacuum pressure in a pneumatic circuit16 Jul 2026US 2026/0202277 A1Coval
Most cited
By later US patents
- Pressure transmitter with stress isolation depression124US 5,094,109 ARosemount Inc. · 1992
- Process pressure measurement devices with improved error compensation121US 6,295,875 B1Rosemount Inc. · 2001
- Apparatus for conveying fluid pressures to a differential pressure transducer106US 4,466,290 ARosemount Inc. · 1984
- Capacitive pressure transducer with isolated sensing diaphragm90US 4,370,890 ARosemount Inc. · 1983
- Isolator apparatus72US 4,798,089 ARosemount Inc. · 1989