F01L 7/023
Cylindrical valves having a hollow or partly hollow body allowing axial inlet
Official title: {Cylindrical valves having a hollow or partly hollow body allowing axial inlet or exhaust fluid circulation}
F01L7/023 (Cylindrical valves having a hollow or partly hollow body allowing axial inlet) appears on 29 US grants and 20 published applications in this corpus.
Search patents in F01L- Granted patents
- 29
- Published applications
- 20
- Assignees
- 10
- Inventors
- 34
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 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 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 4 | 1 |
| 2007 | 0 | 4 |
| 2008 | 2 | 5 |
| 2009 | 3 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 2 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Engine and method of operating the same30 Sep 2025US 12,429,003 B2Alpha-Otto Technologies Inc.
- Engine and method of operating the same10 Dec 2024US 12,163,480 B2Alpha-Otto Technologies Inc.
- Engine with rotating valve assembly9 Jun 2020US 10,677,190 B2Vaztec Engine Venture, LLC
- Rotary valve assembly having rotatable throttle and intake assemblies27 Feb 2018US 9,903,238 B2Microsteam, Inc.
- Cylinder head for rotary valve internal combustion engine13 Apr 2010US 7,694,656 B2Bishop Innovation Limited
- Engine and method of operating the same1 Jan 2026US 2026/0002480 A1Alpha-Otto Technologies Inc.
- Engine and method of operating the same27 Mar 2025US 2025/0101925 A1Alpha-Otto Technologies Inc.
- Distribution cylinder20 Jun 2024US 2024/0200519 A1
- Engine and method of operating the same15 Feb 2024US 2024/0052793 A1Alpha-Otto Technologies Inc.
- Engine with rotating valve assembly14 Mar 2019US 2019/0078532 A1Vaztec Engine Venture, LLC
Most cited
By later US patents