G01C 9/24
In closed containers partially filled with liquid so as to leave a
Official title: in closed containers partially filled with liquid so as to leave a gas bubble
G01C9/24 (In closed containers partially filled with liquid so as to leave a) appears on 888 US grants and 618 published applications in this corpus.
Search patents in G01C- Granted patents
- 888
- Published applications
- 618
- Assignees
- 238
- Inventors
- 1,226
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 20 | 0 |
| 1979 | 13 | 0 |
| 1980 | 9 | 0 |
| 1981 | 5 | 0 |
| 1982 | 10 | 0 |
| 1983 | 8 | 0 |
| 1984 | 8 | 0 |
| 1985 | 14 | 0 |
| 1986 | 9 | 0 |
| 1987 | 7 | 0 |
| 1988 | 10 | 0 |
| 1989 | 8 | 0 |
| 1990 | 13 | 0 |
| 1991 | 16 | 0 |
| 1992 | 20 | 0 |
| 1993 | 20 | 0 |
| 1994 | 7 | 0 |
| 1995 | 21 | 0 |
| 1996 | 16 | 0 |
| 1997 | 12 | 0 |
| 1998 | 21 | 0 |
| 1999 | 15 | 0 |
| 2000 | 25 | 0 |
| 2001 | 20 | 7 |
| 2002 | 20 | 20 |
| 2003 | 25 | 16 |
| 2004 | 19 | 21 |
| 2005 | 17 | 28 |
| 2006 | 19 | 27 |
| 2007 | 13 | 22 |
| 2008 | 14 | 26 |
| 2009 | 29 | 27 |
| 2010 | 23 | 21 |
| 2011 | 21 | 21 |
| 2012 | 15 | 18 |
| 2013 | 15 | 20 |
| 2014 | 17 | 13 |
| 2015 | 14 | 28 |
| 2016 | 20 | 31 |
| 2017 | 24 | 32 |
| 2018 | 29 | 25 |
| 2019 | 25 | 28 |
| 2020 | 30 | 33 |
| 2021 | 37 | 35 |
| 2022 | 38 | 38 |
| 2023 | 34 | 26 |
| 2024 | 25 | 21 |
| 2025 | 18 | 19 |
| 2026 | 13 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Speed square with highly visible level6 Oct 2026US 12,754,003 B2
- Leveling device with hook and loop straps22 Sep 2026US 12,742,641 B1
- Leveling method and leveling system21 Jul 2026US 12,687,393 B2Fulian Precision Electronics (Tianjin) Co., LTD.
- Measuring device14 Jul 2026US 12,681,176 B2
- Construction surface flatness detector30 Jun 2026US 12,669,328 B2Changzhou Huada Kejie Opto-Electro Instrument Co., Ltd.
- Tri Outward Swivel Vial Level8 Oct 2026US 2026/0309492 A1
- Improved Illuminated Level1 Oct 2026US 2026/0298629 A1
- Rotating Laser having at Least One Inclination Sensor24 Sep 2026US 2026/0287353 A1Robert Bosch GmbH
- Support for a tripod3 Sep 2026US 2026/0259482 A1Really Right Stuff, LLC
- Devices for leveling scope reticles of crossbows20 Aug 2026US 2026/0243537 A1
Most cited
By later US patents
- Multipurpose gripping tool886US 7,162,758 B22007
- Hand held electronic remote control device166US 5,459,489 ATV Interactive Data Corporation · 1995
- Protractor bubble level131US 5,063,679 A1991
- Level with slotted magnet support92US 4,593,475 AGreat Neck Saw Manufacturing, Inc. · 1986
- Magnetic torpedo level87US 6,568,095 B22003