F01M 2001/0238
Rotary pumps
Official title: {Rotary pumps}
F01M2001/0238 (Rotary pumps) appears on 168 US grants and 197 published applications in this corpus.
Search patents in F01M- Granted patents
- 168
- Published applications
- 197
- Assignees
- 95
- Inventors
- 388
- Latest grant
- 17 Mar 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 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 3 | 4 |
| 2005 | 1 | 2 |
| 2006 | 2 | 4 |
| 2007 | 5 | 2 |
| 2008 | 1 | 5 |
| 2009 | 4 | 1 |
| 2010 | 1 | 3 |
| 2011 | 6 | 7 |
| 2012 | 1 | 5 |
| 2013 | 3 | 6 |
| 2014 | 5 | 7 |
| 2015 | 0 | 8 |
| 2016 | 9 | 31 |
| 2017 | 11 | 26 |
| 2018 | 22 | 21 |
| 2019 | 20 | 20 |
| 2020 | 22 | 13 |
| 2021 | 17 | 7 |
| 2022 | 9 | 7 |
| 2023 | 7 | 5 |
| 2024 | 7 | 5 |
| 2025 | 5 | 3 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device for transporting a liquid17 Mar 2026US 12,577,948 B1Hanon Systems Efp Deutschland GmbH
- Electronic oil pump23 Dec 2025US 12,504,012 B2Coavis
- Pressurized oil system powered by two-stroke engine11 Nov 2025US 12,467,391 B2Arctic Cat Inc.
- Pump structure of internal combustion engine29 Apr 2025US 12,286,910 B2Nissan Motor Co., Ltd.
- Internal combustion engine and lubrication system thereof29 Apr 2025US 12,286,924 B2Brp-Rotax GmbH & Co. KG
- Lubrication system for an internal combustion engine25 Jun 2026US 2026/0176992 A1DAF Trucks N. V.
- Scavenge pump assembly for an aircraft engine oil system30 Apr 2026US 2026/0117683 A1Pratt & Whitney Canada Corp.
- Pressurized oil system powered by two-stroke engine12 Feb 2026US 2026/0043341 A1Arctic Cat Inc.
- Electric pump5 Feb 2026US 2026/0036126 A1Zhejiang Sanhua Automotive Components Co., Ltd.
- Analyzer10 Jul 2025US 2025/0224307 A1Subaru Corporation
Most cited
By later US patents
- Wet oil sump for four cycle engine30US 8,011,342 B2Polaris Industries Inc. · 2011
- Lubrication of journal bearing during clockwise and counter-clockwise rotation30US 8,702,373 B1United Technologies Corporation · 2014
- Lubricating oil feeding apparatus and oil feeding structure for starter driven gear bearing in internal combustion engine24US 5,495,833 AHonda Giken Kogyo Kabushiki Kaisha · 1996
- On-demand lubrication system for improved flow management and containment17US 8,256,576 B2United Technologies Corporation · 2012
- Lubrication of journal bearing during clockwise and counter-clockwise rotation16US 11,092,037 B2Raytheon Technologies Corporation · 2021