G01F 23/263
By measuring variations in capacitance of capacitors
Official title: by measuring variations in capacitance of capacitors
G01F23/263 (By measuring variations in capacitance of capacitors) appears on 1,275 US grants and 1,150 published applications in this corpus.
Search patents in G01F- Granted patents
- 1,275
- Published applications
- 1,150
- Assignees
- 773
- Inventors
- 2,625
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 10 | 0 |
| 1978 | 10 | 0 |
| 1979 | 13 | 0 |
| 1980 | 13 | 0 |
| 1981 | 14 | 0 |
| 1982 | 17 | 0 |
| 1983 | 18 | 0 |
| 1984 | 23 | 0 |
| 1985 | 19 | 0 |
| 1986 | 16 | 0 |
| 1987 | 12 | 0 |
| 1988 | 9 | 0 |
| 1989 | 16 | 0 |
| 1990 | 16 | 0 |
| 1991 | 24 | 0 |
| 1992 | 20 | 0 |
| 1993 | 18 | 0 |
| 1994 | 8 | 0 |
| 1995 | 17 | 0 |
| 1996 | 20 | 0 |
| 1997 | 24 | 0 |
| 1998 | 15 | 0 |
| 1999 | 19 | 0 |
| 2000 | 18 | 0 |
| 2001 | 31 | 3 |
| 2002 | 25 | 14 |
| 2003 | 22 | 18 |
| 2004 | 21 | 24 |
| 2005 | 18 | 39 |
| 2006 | 27 | 24 |
| 2007 | 14 | 29 |
| 2008 | 19 | 35 |
| 2009 | 15 | 43 |
| 2010 | 20 | 41 |
| 2011 | 23 | 39 |
| 2012 | 25 | 30 |
| 2013 | 28 | 52 |
| 2014 | 28 | 33 |
| 2015 | 29 | 31 |
| 2016 | 38 | 50 |
| 2017 | 44 | 68 |
| 2018 | 52 | 64 |
| 2019 | 56 | 72 |
| 2020 | 40 | 61 |
| 2021 | 70 | 90 |
| 2022 | 57 | 71 |
| 2023 | 51 | 60 |
| 2024 | 50 | 55 |
| 2025 | 38 | 58 |
| 2026 | 30 | 46 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Measuring water level in highly deviated or horizontal hydrocarbon well sections15 Sep 2026US 12,735,978 B2Openfield
- Fill level gauge15 Sep 2026US 12,736,385 B2Endress + Hauser GmbH + Co. KG
- Liquid beverage flow meter able to distinguish air18 Aug 2026US 12,710,297 B2
- Automated sample handling instrumentation, systems, processes, and methods4 Aug 2026US 12,699,111 B2Gen-Probe Incorporated
- Sewer cap monitoring system21 Jul 2026US 12,687,417 B1QuadSprout Technologies LLC
- Measuring assembly of a field device on a container8 Oct 2026US 2026/0309534 A1VEGA Grieshaber KG
- Capacitive detection device and methods24 Sep 2026US 2026/0287410 A1Beckman Coulter, Inc.
- Sewer cap monitoring system17 Sep 2026US 2026/0276427 A1QuadSprout Technologies LLC
- Buffer management for bioprocessing system10 Sep 2026US 2026/0264072 A1Cytiva US LLC
- Apparatus for monitoring the fill level of filled containers10 Sep 2026US 2026/0266646 A1Krones AG
Most cited
By later US patents
- Level sensing372US 6,457,355 B12002
- Method and device for determining the quantity of product present in a reservoir, a product reservoir and a device for processing electrical signals intended for such a determination device204US 6,345,532 B1Canon Kabushiki Kaisha · 2002
- Capacitance-type fluid level sensor for i.v. and catheter bags202US 5,135,485 A1992
- Detection means for multiple capacitive sensing devices181US 4,266,144 AEmhart Industries, Inc. · 1981
- Capacitive sensor168US 5,465,619 AXerox Corporation · 1995