F01L 2313/00
Rotary valve drives
F01L2313/00 (Rotary valve drives) appears on 22 US grants and 5 published applications in this corpus.
Search patents in F01L- Granted patents
- 22
- Published applications
- 5
- Assignees
- 9
- Inventors
- 35
- Latest grant
- 28 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 2 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Two-stroke internal combustion engine28 Nov 2023US 11,828,208 B2
- Hydraulic valve mechanism with variable valve opening times and internal combustion engine7 Sep 2021US 11,111,825 B1Longkou Zhongyu Investment Holding Ltd.
- Methods for operating and controlling an internal combustion engine that exhausts no gas into outside atmosphere1 Jun 2021US 11,022,078 B1
- Rotary valve engine system26 Nov 2019US 10,487,703 B2RVD Enterprises, LLC
- Variable timing mechanism for a rotary valve20 Jul 2004US 6,763,788 B2Bishop Innovation Limited
- Two-stroke internal combustion engine11 May 2023US 2023/0143774 A1
- Hydraulic valve mechanism with variable valve opening times and internal combustion engine26 Aug 2021US 2021/0262368 A1Longkou Zhongyu Investment Holding Ltd.
- Cam rotary engine power system of internal combustion type5 Mar 2020US 2020/0072133 A1Dalian University of Technology
- Rotary valve engine system27 Apr 2017US 2017/0114678 A1RVD Enterprises, LLC
- Variable timing mechanism for a rotary valve26 Jun 2003US 2003/0116108 A1Bishop Innovation Limited
Most cited
By later US patents
- Internal combustion engine intake and exhaust valve control apparatus46US 4,976,227 A1990
- Spherical rotary valve assembly for an internal combustion engine41US 4,944,261 A1990
- Rotary valve and system for duration and phase control32US 5,105,784 AGeneral Motors Corporation · 1992
- Rotary valve internal combustion engine26US 4,864,984 A1989
- Valve operating system for internal combustion engine24US 4,776,306 AHonda Giken Kogyo Kabushiki Kaisha · 1988