F02B 69/00
Internal-combustion engines convertible into other combustion-engine type, not provided for in f02b11/00
Official title: Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types
F02B69/00 (Internal-combustion engines convertible into other combustion-engine type, not provided for in f02b11/00) appears on 256 US grants and 172 published applications in this corpus.
Search patents in F02B- Granted patents
- 256
- Published applications
- 172
- Assignees
- 121
- Inventors
- 471
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 6 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 7 | 0 |
| 1991 | 8 | 0 |
| 1992 | 9 | 0 |
| 1993 | 8 | 0 |
| 1994 | 8 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 10 | 2 |
| 2002 | 8 | 14 |
| 2003 | 15 | 8 |
| 2004 | 10 | 16 |
| 2005 | 5 | 14 |
| 2006 | 11 | 13 |
| 2007 | 5 | 7 |
| 2008 | 10 | 4 |
| 2009 | 2 | 6 |
| 2010 | 0 | 7 |
| 2011 | 3 | 2 |
| 2012 | 3 | 2 |
| 2013 | 3 | 7 |
| 2014 | 3 | 5 |
| 2015 | 6 | 8 |
| 2016 | 7 | 8 |
| 2017 | 2 | 4 |
| 2018 | 11 | 8 |
| 2019 | 7 | 6 |
| 2020 | 7 | 7 |
| 2021 | 4 | 3 |
| 2022 | 2 | 4 |
| 2023 | 7 | 9 |
| 2024 | 6 | 5 |
| 2025 | 4 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Energy management for power system17 Mar 2026US 12,580,212 B2Transportation IP Holdings, LLC
- Variable displacement engine29 Jul 2025US 12,372,035 B2
- Dual fuel system with electric battery for power generation15 Jul 2025US 12,359,630 B2RV Mobile Power, LLC
- Compression ignition engine with igniter and pilot injector28 Jan 2025US 12,209,532 B2Wisconsin Alumni Research Foundation
- Energy management for multi-input propulsion14 Jan 2025US 12,194,889 B2Transportation IP Holdings, LLC
- Dual fuel system with electric battery for power generation16 Oct 2025US 2025/0320837 A1RV Mobile Power, LLC
- Dual fuel engine system22 May 2025US 2025/0163847 A1Shell USA, Inc.
- Energy management for multi-input propulsion8 May 2025US 2025/0145056 A1Transportation IP Holdings, LLC
- Variable displacement engine19 Sep 2024US 2024/0309820 A1
- Compression Ignition Engine with Igniter and Pilot Injector5 Sep 2024US 2024/0295188 A1Wisconsin Alumni Research Foundation
Most cited
By later US patents
- Bi-fuel control system and retrofit assembly for diesel engines231US 6,543,395 B2Gas Technologies LLC · 2003
- Multiple operating mode engine and method of operation134US 6,561,157 B2Cummins Inc. · 2003
- Compression autoignition gasoline engine114US 6,336,436 B12002
- Vehicle management computer113US 5,284,116 ANorth American Philips Corporation · 1994
- Vehicle management computer106US 5,123,397 ANorth American Philips Corporation · 1992