F02B 33/28
Component parts, details or accessories of crankcase pumps, not provided for in
Official title: Component parts, details or accessories of crankcase pumps, not provided for in, or of interest apart from, subgroups F02B33/02 - F02B33/26
F02B33/28 (Component parts, details or accessories of crankcase pumps, not provided for in) appears on 186 US grants and 83 published applications in this corpus.
Search patents in F02B- Granted patents
- 186
- Published applications
- 83
- Assignees
- 72
- Inventors
- 261
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 6 | 0 |
| 1986 | 8 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 13 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 11 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 8 |
| 2003 | 7 | 4 |
| 2004 | 5 | 7 |
| 2005 | 5 | 1 |
| 2006 | 2 | 2 |
| 2007 | 1 | 2 |
| 2008 | 2 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 3 |
| 2011 | 2 | 3 |
| 2012 | 0 | 2 |
| 2013 | 2 | 4 |
| 2014 | 1 | 4 |
| 2015 | 4 | 4 |
| 2016 | 6 | 4 |
| 2017 | 2 | 3 |
| 2018 | 2 | 5 |
| 2019 | 2 | 6 |
| 2020 | 11 | 4 |
| 2021 | 5 | 6 |
| 2022 | 3 | 1 |
| 2023 | 4 | 3 |
| 2024 | 2 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fuel pump and damper cup thereof3 Feb 2026US 12,540,608 B2Phinia Jersey Holdings LLC
- Engine control system and methods25 Nov 2025US 12,480,455 B2Arctic Cat Inc.
- Engine control system and methods22 Jul 2025US 12,366,222 B2Arctic Cat Inc.
- Engine control system and methods11 Jun 2024US 12,006,889 B2Arctic Cat Inc.
- Two-stroke engine and method for operating a two-stroke engine7 May 2024US 11,976,587 B2Andreas Stihl AG & CO.KG
- Engine control system and methods19 Mar 2026US 2026/0078710 A1Arctic Cat Inc.
- Engine control system and methods13 Feb 2025US 2025/0052221 A1Arctic Cat Inc.
- Engine control system and methods22 Aug 2024US 2024/0280062 A1Arctic Cat Inc.
- Engine control system and methods14 Mar 2024US 2024/0084774 A1Arctic Cat Inc.
- Two-stroke engine and method for operating a two-stroke engine14 Dec 2023US 2023/0399974 A1Andreas Stihl AG & CO.KG
Most cited
By later US patents
- Internal combustion engine60US 4,565,167 A1986
- Two cycle internal combustion engines58US 4,075,985 AYamaha Hatsudoki Kabushiki Kaisha · 1978
- Power module and methods of operation50US 6,415,749 B12002
- Abnormality warning system for a direct fuel injection engine41US 5,241,933 AFuji Jukogyo Kabushiki Kaisha · 1993
- Two-cycle engine with pure air scavenging39US 4,248,185 A1981