F01M 2250/64
Number of revolutions
F01M2250/64 (Number of revolutions) appears on 41 US grants and 31 published applications in this corpus.
Search patents in F01M- Granted patents
- 41
- Published applications
- 31
- Assignees
- 36
- Inventors
- 123
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 3 |
| 2012 | 0 | 0 |
| 2013 | 1 | 3 |
| 2014 | 1 | 1 |
| 2015 | 4 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 5 |
| 2019 | 3 | 0 |
| 2020 | 1 | 4 |
| 2021 | 2 | 3 |
| 2022 | 6 | 4 |
| 2023 | 4 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Oil pressure control system and control method thereof23 Jun 2026US 12,662,952 B2Industrial Technology Research Institute
- Engine lubrication systems, lubrication fluid circulation systems, and methods for regulating fluid pressure7 Jan 2025US 12,188,386 B2Cummins Inc.
- Vehicle monitoring system26 Nov 2024US 12,152,548 B2Transportation IP Holdings, LLC
- Method for operating an active oil separator and device for separating oil28 Nov 2023US 11,828,211 B2Volkswagen Aktiengesellschaft
- Method and device for warning of insufficient engine oil for a vehicle17 Oct 2023US 11,788,447 B2Hyundai Motor Company
- Oil pressure control system and control method thereof26 Jun 2025US 2025/0207518 A1Industrial Technology Research Institute
- System, method, and apparatus for controlling fluid flow from piston cooling nozzles1 May 2025US 2025/0137398 A1Cummins Inc.
- Engine lubrication systems, lubrication fluid circulation systems, and methods for regulating fluid pressure7 Mar 2024US 2024/0077006 A1Cummins Inc.
- Method and device for warning of insufficient engine oil for a vehicle8 Jun 2023US 2023/0175421 A1Hyundai Motor Company
- Lubricant dilution detection system29 Sep 2022US 2022/0307394 A1Caterpillar Inc.
Most cited
By later US patents
- Oil degradation warning system45US 4,706,193 ANissan Motor Co., Ltd. · 1987
- Oil degradation warning system44US 4,796,204 ANissan Motor Co., Ltd. · 1989
- Centrifugal separating filter31US 5,779,618 AKomatsu Ltd. · 1998
- Oil pump system27US 5,547,349 AAisin Seiki Kabushiki Kaisha · 1996
- Fluid delivery control system27US 7,055,486 B2Caterpillar Inc. · 2006