F02B 2075/022
Having less than six strokes per cycle
Official title: {having less than six strokes per cycle}
F02B2075/022 (Having less than six strokes per cycle) appears on 6,303 US grants and 1,567 published applications in this corpus.
Search patents in F02B- Granted patents
- 6,303
- Published applications
- 1,567
- Assignees
- 1,128
- Inventors
- 7,033
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 116 | 0 |
| 1977 | 112 | 0 |
| 1978 | 118 | 0 |
| 1979 | 98 | 0 |
| 1980 | 116 | 0 |
| 1981 | 111 | 0 |
| 1982 | 120 | 0 |
| 1983 | 130 | 0 |
| 1984 | 185 | 0 |
| 1985 | 162 | 0 |
| 1986 | 147 | 0 |
| 1987 | 190 | 0 |
| 1988 | 192 | 0 |
| 1989 | 210 | 0 |
| 1990 | 242 | 0 |
| 1991 | 235 | 0 |
| 1992 | 231 | 0 |
| 1993 | 247 | 0 |
| 1994 | 227 | 0 |
| 1995 | 212 | 0 |
| 1996 | 269 | 0 |
| 1997 | 223 | 0 |
| 1998 | 241 | 0 |
| 1999 | 213 | 0 |
| 2000 | 217 | 0 |
| 2001 | 223 | 85 |
| 2002 | 211 | 198 |
| 2003 | 207 | 153 |
| 2004 | 132 | 126 |
| 2005 | 106 | 60 |
| 2006 | 77 | 54 |
| 2007 | 47 | 41 |
| 2008 | 38 | 39 |
| 2009 | 28 | 45 |
| 2010 | 19 | 34 |
| 2011 | 20 | 47 |
| 2012 | 27 | 48 |
| 2013 | 27 | 34 |
| 2014 | 43 | 48 |
| 2015 | 49 | 69 |
| 2016 | 42 | 58 |
| 2017 | 59 | 74 |
| 2018 | 62 | 52 |
| 2019 | 61 | 73 |
| 2020 | 58 | 60 |
| 2021 | 49 | 42 |
| 2022 | 57 | 41 |
| 2023 | 42 | 34 |
| 2024 | 30 | 19 |
| 2025 | 20 | 19 |
| 2026 | 5 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Valve system for two-stroke engine4 Aug 2026US 12,698,744 B2GM Global Technology Operations LLC
- Engine control system and methods7 Jul 2026US 12,674,434 B2Arctic Cat Inc.
- Port assembly for 2-stroke diesel engine9 Jun 2026US 12,650,106 B2DeltaHawk Engines, Inc.
- Stratified nitrogen enriched air (NEA) strategies and methods to reduce NOx emissions from engines12 May 2026US 12,624,654 B2Saudi Arabian Oil Company
- Process for controlling a gaseous blend in a combustion chamber of a two-stroke cycle of an internal combustion engine3 Mar 2026US 12,565,867 B2
- Two-cycle engine with scavaging passage8 Oct 2026US 2026/0309071 A1Maruyama Mfg.Co., Inc.
- Engine control system and methods8 Oct 2026US 2026/0309111 A1Arctic Cat Inc.
- Two stroke apposed pistons parallel cylinders internal combustion engine1 Oct 2026US 2026/0298132 A1
- Axial internal combustion engine10 Sep 2026US 2026/0266215 A1
- Engine13 Aug 2026US 2026/0235053 A1Ishikawa Energy Research Co., Ltd.
Most cited
By later US patents
- Methods for identifying nucleic acid ligands856US 5,270,163 AUniversity Research Corporation · 1993
- Nucleic acid ligands561US 5,475,096 AUniversity Research Corporation · 1995
- Opposed piston internal combustion engine with inviscid layer sealing470US 9,909,492 B2Prime Group Alliance, LLC · 2018
- Man machine interface446US 4,570,217 A1986
- Solution phase nucleic acid sandwich assays having reduced background noise406US 5,635,352 AChiron Corporation · 1997