F16N 2250/04
Pressure
F16N2250/04 (Pressure) appears on 131 US grants and 119 published applications in this corpus.
Search patents in F16N- Granted patents
- 131
- Published applications
- 119
- Assignees
- 106
- Inventors
- 326
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 2 | 2 |
| 2005 | 0 | 2 |
| 2006 | 3 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 4 |
| 2013 | 2 | 3 |
| 2014 | 2 | 5 |
| 2015 | 3 | 2 |
| 2016 | 2 | 6 |
| 2017 | 9 | 7 |
| 2018 | 7 | 11 |
| 2019 | 3 | 15 |
| 2020 | 11 | 10 |
| 2021 | 9 | 6 |
| 2022 | 7 | 9 |
| 2023 | 9 | 11 |
| 2024 | 8 | 6 |
| 2025 | 7 | 12 |
| 2026 | 7 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Oil condition estimation device and oil condition estimation method1 Sep 2026US 12,723,527 B2Isuzu Motors Limited
- Permanent, compact, online monitoring and controlled automation system25 Aug 2026US 12,716,547 B2Saudi Arabian Oil Company
- Arrangement and method for sealing a propeller shaft of a marine vessel18 Aug 2026US 12,709,372 B2ABB AB
- Lubrication system7 Jul 2026US 12,674,545 B2Honda Motor Co., Ltd.
- Lubricant filter system, aircraft engine, and method of operating a lubricant system19 May 2026US 12,631,133 B2Pratt & Whitney Canada Corp.
- Self-adjusting lubrication system24 Sep 2026US 2026/0287117 A1
- Grease gun including a relief valve and pressure monitoring16 Jul 2026US 2026/0202013 A1
- Lubrication health monitoring system19 Mar 2026US 2026/0078871 A1GM Global Technology Operations LLC
- Oil condition estimation device and oil condition estimation method25 Dec 2025US 2025/0389214 A1Isuzu Motors Limited
- Fuzzy logic-based ai system for detection and accommodation of oil system failures in the aircraft's propulsion system18 Dec 2025US 2025/0382069 A1Pratt & Whitney Canada Corp.
Most cited
By later US patents
- High-low pressure lubrication system for high-horsepower plunger pump139US 10,859,203 B1American Jereh International Corporation · 2020
- Lubrication system with an oil bypass valve62US 5,339,776 AChrysler Corporation · 1994
- System for maintaining the quality and level of lubricant in an engine62US 5,964,318 AThe Lubrizol Corporation · 1999
- Lubricant circulation diagnostic and modeling system59US 5,968,371 ANelson Industries, Inc. · 1999
- Method and apparatus for regulating a compressor lubrication system53US 5,318,151 AIngersoll-Rand Company · 1994