G01C 9/20
The indication being based on the inclination of the surface of a
Official title: the indication being based on the inclination of the surface of a liquid relative to its container
G01C9/20 (The indication being based on the inclination of the surface of a) appears on 218 US grants and 102 published applications in this corpus.
Search patents in G01C- Granted patents
- 218
- Published applications
- 102
- Assignees
- 113
- Inventors
- 324
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 11 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 4 | 0 |
| 1997 | 8 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 2 |
| 2002 | 8 | 6 |
| 2003 | 8 | 7 |
| 2004 | 6 | 5 |
| 2005 | 5 | 8 |
| 2006 | 8 | 9 |
| 2007 | 7 | 4 |
| 2008 | 6 | 4 |
| 2009 | 3 | 6 |
| 2010 | 4 | 1 |
| 2011 | 3 | 6 |
| 2012 | 3 | 2 |
| 2013 | 2 | 5 |
| 2014 | 2 | 5 |
| 2015 | 5 | 4 |
| 2016 | 5 | 4 |
| 2017 | 2 | 7 |
| 2018 | 7 | 5 |
| 2019 | 4 | 2 |
| 2020 | 1 | 2 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 1 |
| 2024 | 2 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System for determination of line and level for trenchless construction3 Feb 2026US 12,540,454 B2PLG Technologies, Inc.
- Orientation determination device30 Dec 2025US 12,510,355 B1
- Tilt sensor and detecting system9 Jul 2024US 12,031,844 B2Nippon Telegraph and Telephone Corporation
- Motion-sensitive field effect transistor, motion detection system, and method27 Feb 2024US 11,913,971 B2GLOBALFOUNDRIES U. S. Inc.
- Surveying device20 Sep 2022US 11,448,504 B2Topcon Corporation
- Angle indicator16 Jul 2026US 2026/0202197 A1OK Safety Partners Inc.
- Measurement apparatus with pendulum-based plumb indication and fluid-based level indication16 Jul 2026US 2026/0202198 A1
- Sensor for level detection2 Apr 2026US 2026/0092801 A1National Research Council of Canada
- System for monitoring a floating roof of a storage tank5 Feb 2026US 2026/0035170 A1Life Safety Distribution AG
- Electrolyte solution for corrosion and meniscus inhibition6 Nov 2025US 2025/0341394 A1The Fredricks Company
Most cited
By later US patents
- Locator device for continuously locating a dipole magnetic field transmitter and its method of operation244US 5,337,002 A1994
- Sourceless orientation sensor176US 5,526,022 AVirtual I/O, Inc. · 1996
- Implantable multi-axis position and activity sensor167US 5,233,984 AMedtronic, Inc. · 1993
- Device and method for locating an inground object and a housing forming part of said device148US 5,633,589 A1997
- Compensated capacitive liquid level sensor129US 6,490,920 B1Millennium Sensors Ltd. · 2002