F01M 13/023
Control valves in suction conduit
Official title: {Control valves in suction conduit}
F01M13/023 (Control valves in suction conduit) appears on 228 US grants and 161 published applications in this corpus.
Search patents in F01M- Granted patents
- 228
- Published applications
- 161
- Assignees
- 104
- Inventors
- 452
- Latest grant
- 10 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 11 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 2 | 5 |
| 2002 | 3 | 3 |
| 2003 | 4 | 1 |
| 2004 | 4 | 6 |
| 2005 | 2 | 2 |
| 2006 | 3 | 3 |
| 2007 | 1 | 4 |
| 2008 | 3 | 4 |
| 2009 | 3 | 4 |
| 2010 | 2 | 8 |
| 2011 | 7 | 12 |
| 2012 | 6 | 5 |
| 2013 | 4 | 9 |
| 2014 | 8 | 11 |
| 2015 | 11 | 9 |
| 2016 | 11 | 11 |
| 2017 | 10 | 14 |
| 2018 | 12 | 11 |
| 2019 | 9 | 2 |
| 2020 | 10 | 20 |
| 2021 | 16 | 4 |
| 2022 | 9 | 4 |
| 2023 | 4 | 3 |
| 2024 | 2 | 2 |
| 2025 | 2 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
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- Dry sump crankcase60US 4,674,457 AFord Motor Company · 1987
- Air-oil separator and method of separation58US 4,269,607 A1981
- Combination in-line air-filter/air-oil separator/air-silencer with preseparator49US 5,479,907 A1996
- Crankcase pressure regulation system for an internal combustion engine47US 5,499,616 ADresser Industries, Inc. · 1996