F16N 19/003
Indicating oil level
Official title: {Indicating oil level (measuring liquid level in general G01F)}
F16N19/003 (Indicating oil level) appears on 77 US grants and 70 published applications in this corpus.
Search patents in F16N- Granted patents
- 77
- Published applications
- 70
- Assignees
- 57
- Inventors
- 169
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 2 | 2 |
| 2014 | 0 | 4 |
| 2015 | 1 | 6 |
| 2016 | 5 | 6 |
| 2017 | 5 | 5 |
| 2018 | 4 | 14 |
| 2019 | 6 | 4 |
| 2020 | 10 | 7 |
| 2021 | 3 | 2 |
| 2022 | 5 | 7 |
| 2023 | 5 | 2 |
| 2024 | 2 | 1 |
| 2025 | 9 | 5 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Lubricant dispenser26 Aug 2025US 12,398,843 B2Perma-Tec GmbH&Co.KG
- Lubricant distribution system with overfill protection29 Jul 2025US 12,372,202 B2Lincoln Industrial Corporation
- Compressor-oil receiving device and compressor system having a compressor-oil receiving device of this type8 Jul 2025US 12,352,269 B2Knorr-Bremse Systeme FüR Schienenfahrzeuge GmbH
- Systems for axle arm1 Apr 2025US 12,263,700 B2Dana Italia S.R.L.
- Oil filler tube assembly for aircraft engine1 Apr 2025US 12,264,594 B1Pratt & Whitney Canada Corp.
- Multi-function automatic grease injection pump including multiple discharge ports and having independently driven multi-stage structure24 Sep 2026US 2026/0287116 A1Ahwon Corporation
- Reservoir with oil level probe16 Jul 2026US 2026/0202232 A1Safran Aero Boosters SA
- Battery-type automatic grease gun26 Jun 2025US 2025/0207722 A1Ahwon Corporation
- Lubrication system for pump drive19 Jun 2025US 2025/0198401 A1Haskel International, LLC
- Integrated level sensor for lubricant pump assembly29 May 2025US 2025/0172242 A1Graco Minnesota Inc.
Most cited
By later US patents
- Sight glass for observing lubricant in the lower gearcase of marine engines34US 4,757,710 A1988
- Vaccum operated dry sump system33US 5,101,936 AFord Motor Company · 1992
- Lubrication system level control28US 8,448,750 B2Caterpillar Inc. · 2013
- Oil level monitor20US 5,021,665 A1991
- Method and apparatus for measuring oil level18US 4,782,698 AGeneral Motors Corporation · 1988