F02B 2075/025
Two
Official title: {two}
F02B2075/025 (Two) appears on 3,584 US grants and 1,032 published applications in this corpus.
Search patents in F02B- Granted patents
- 3,584
- Published applications
- 1,032
- Assignees
- 676
- Inventors
- 3,821
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 45 | 0 |
| 1977 | 49 | 0 |
| 1978 | 74 | 0 |
| 1979 | 53 | 0 |
| 1980 | 58 | 0 |
| 1981 | 61 | 0 |
| 1982 | 70 | 0 |
| 1983 | 71 | 0 |
| 1984 | 82 | 0 |
| 1985 | 84 | 0 |
| 1986 | 78 | 0 |
| 1987 | 105 | 0 |
| 1988 | 120 | 0 |
| 1989 | 124 | 0 |
| 1990 | 164 | 0 |
| 1991 | 157 | 0 |
| 1992 | 145 | 0 |
| 1993 | 146 | 0 |
| 1994 | 144 | 0 |
| 1995 | 106 | 0 |
| 1996 | 127 | 0 |
| 1997 | 96 | 0 |
| 1998 | 125 | 0 |
| 1999 | 108 | 0 |
| 2000 | 113 | 0 |
| 2001 | 121 | 39 |
| 2002 | 107 | 87 |
| 2003 | 104 | 92 |
| 2004 | 61 | 60 |
| 2005 | 62 | 38 |
| 2006 | 43 | 34 |
| 2007 | 31 | 29 |
| 2008 | 25 | 29 |
| 2009 | 20 | 38 |
| 2010 | 15 | 26 |
| 2011 | 18 | 40 |
| 2012 | 22 | 42 |
| 2013 | 23 | 29 |
| 2014 | 38 | 45 |
| 2015 | 39 | 61 |
| 2016 | 35 | 48 |
| 2017 | 47 | 50 |
| 2018 | 46 | 35 |
| 2019 | 44 | 53 |
| 2020 | 43 | 41 |
| 2021 | 28 | 21 |
| 2022 | 32 | 28 |
| 2023 | 31 | 29 |
| 2024 | 25 | 12 |
| 2025 | 15 | 14 |
| 2026 | 4 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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.
- 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
- Exhaust system for an engine2 Dec 2025US 12,485,997 B2Bombardier Recreational Products Inc.
- 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
- Engine13 Aug 2026US 2026/0235053 A1Ishikawa Energy Research Co., Ltd.
- Two-stroke engine and handheld work apparatus23 Jul 2026US 2026/0210286 A1Andreas Stihl AG & CO.KG
Most cited
By later US patents
- Opposed piston internal combustion engine with inviscid layer sealing470US 9,909,492 B2Prime Group Alliance, LLC · 2018
- Man machine interface446US 4,570,217 A1986
- Handwritten keyboardless entry computer system273US 4,972,496 AGrid Systems Corporation · 1990
- Blood processing systems using a peristaltic pump module with valve and sensing station for operating a peristaltic pump tube cassette252US 5,482,440 A1996
- Bi-fuel control system and retrofit assembly for diesel engines231US 6,543,395 B2Gas Technologies LLC · 2003