G05D 9/12
Level control: characterised by the use of electric means
Official title: characterised by the use of electric means
G05D9/12 (Level control: characterised by the use of electric means) appears on 625 US grants and 424 published applications in this corpus.
Search patents in G05D- Granted patents
- 625
- Published applications
- 424
- Assignees
- 437
- Inventors
- 1,230
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 10 | 0 |
| 1978 | 11 | 0 |
| 1979 | 4 | 0 |
| 1980 | 11 | 0 |
| 1981 | 19 | 0 |
| 1982 | 8 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 12 | 0 |
| 1987 | 16 | 0 |
| 1988 | 12 | 0 |
| 1989 | 20 | 0 |
| 1990 | 12 | 0 |
| 1991 | 13 | 0 |
| 1992 | 15 | 0 |
| 1993 | 11 | 0 |
| 1994 | 19 | 0 |
| 1995 | 12 | 0 |
| 1996 | 14 | 0 |
| 1997 | 12 | 0 |
| 1998 | 10 | 0 |
| 1999 | 10 | 0 |
| 2000 | 9 | 0 |
| 2001 | 10 | 0 |
| 2002 | 8 | 11 |
| 2003 | 12 | 10 |
| 2004 | 4 | 9 |
| 2005 | 5 | 7 |
| 2006 | 7 | 8 |
| 2007 | 2 | 8 |
| 2008 | 4 | 6 |
| 2009 | 4 | 5 |
| 2010 | 5 | 6 |
| 2011 | 4 | 9 |
| 2012 | 6 | 8 |
| 2013 | 7 | 19 |
| 2014 | 12 | 23 |
| 2015 | 17 | 26 |
| 2016 | 10 | 25 |
| 2017 | 25 | 17 |
| 2018 | 28 | 31 |
| 2019 | 19 | 26 |
| 2020 | 27 | 23 |
| 2021 | 24 | 17 |
| 2022 | 11 | 22 |
| 2023 | 22 | 27 |
| 2024 | 28 | 33 |
| 2025 | 27 | 22 |
| 2026 | 14 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Low voltage level controllers8 Sep 2026US 12,730,461 B1Fazor LLC
- Water level management system25 Aug 2026US 12,717,357 B2Swim Sense, LLC
- Method for avoiding critical operating conditions of a liquid tank device and liquid tank device25 Aug 2026US 12,717,358 B2Brita LP
- System and method for dispenser management23 Jun 2026US 12,663,821 B2GOJO Industries, Inc.
- Determining and utilizing a desired frequency for a mechanical shaker for a sump pump system16 Jun 2026US 12,655,849 B2State Farm Mutual Automobile Insurance Company
- Method for filling a fluid storage, fluid discharge device for a fluid or fluid mixture, and associated system8 Oct 2026US 2026/0309278 A1
- System and method for dispenser management8 Oct 2026US 2026/0310245 A1GOJO Industries, Inc.
- Process and system for generation of coke drum outage projections8 Oct 2026US 2026/0310246 A1
- Non-condensable gas reinjection system24 Sep 2026US 2026/0287212 A1Fuji Electric Co., Ltd.
- Capacitive detection device and methods24 Sep 2026US 2026/0287410 A1Beckman Coulter, Inc.
Most cited
By later US patents
- Electric motor187US 9,570,945 B2Grundfos Holding A/S · 2017
- Apparatus and method for monitoring a sump pump173US 5,672,050 ALynx Electronics, Inc. · 1997
- Mobile distribution station with guided wave radar fuel level sensors171US 10,303,190 B2Fuel Automation Station, LLC · 2019
- Method of and apparatus for making a three-dimensional product by stereolithography148US 5,174,931 A3D Systems, Inc. · 1992
- Automatic rate matching system139US 5,004,400 AHalliburton Company · 1991