F01L 2301/02
Cyclically operating valves for machines or engines: using particular materials: using ceramic
Official title: Using ceramic materials
F01L2301/02 (Cyclically operating valves for machines or engines: using particular materials: using ceramic) appears on 181 US grants and 156 published applications in this corpus.
Search patents in F01L- Granted patents
- 181
- Published applications
- 156
- Assignees
- 96
- Inventors
- 342
- Latest grant
- 8 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 9 | 0 |
| 1990 | 4 | 0 |
| 1991 | 8 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 2 |
| 2002 | 8 | 3 |
| 2003 | 3 | 4 |
| 2004 | 7 | 17 |
| 2005 | 9 | 10 |
| 2006 | 4 | 5 |
| 2007 | 8 | 24 |
| 2008 | 13 | 6 |
| 2009 | 4 | 5 |
| 2010 | 9 | 2 |
| 2011 | 4 | 4 |
| 2012 | 2 | 4 |
| 2013 | 4 | 3 |
| 2014 | 2 | 6 |
| 2015 | 3 | 5 |
| 2016 | 4 | 11 |
| 2017 | 4 | 6 |
| 2018 | 8 | 11 |
| 2019 | 6 | 6 |
| 2020 | 5 | 9 |
| 2021 | 8 | 7 |
| 2022 | 8 | 3 |
| 2023 | 5 | 2 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Marine hulls and drives97US 7,984,684 B22011
- Internal combustion engine83US 6,279,550 B12001
- Cold air super-charged internal combustion engine, working cycle and method69US 6,951,211 B22005
- Device for varying a valve timing and lift for an internal combustion engine58US 4,696,265 AToyota Jidosha Kabushiki Kaisha · 1987
- Electromagnetic valve control system48US 5,072,700 AIsuzu Ceramics Research Institute Co., Ltd. · 1991