F01C 20/00
Control of, monitoring of, or safety arrangements for, machines or engines
F01C20/00 (Control of, monitoring of, or safety arrangements for, machines or engines) appears on 265 US grants and 221 published applications in this corpus.
Search patents in F01C- Granted patents
- 265
- Published applications
- 221
- Assignees
- 138
- Inventors
- 437
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 8 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 2 |
| 2002 | 3 | 0 |
| 2003 | 1 | 4 |
| 2004 | 1 | 4 |
| 2005 | 1 | 7 |
| 2006 | 4 | 9 |
| 2007 | 8 | 7 |
| 2008 | 6 | 9 |
| 2009 | 3 | 8 |
| 2010 | 11 | 11 |
| 2011 | 5 | 7 |
| 2012 | 2 | 9 |
| 2013 | 4 | 11 |
| 2014 | 12 | 15 |
| 2015 | 10 | 22 |
| 2016 | 10 | 11 |
| 2017 | 13 | 16 |
| 2018 | 16 | 19 |
| 2019 | 15 | 10 |
| 2020 | 13 | 13 |
| 2021 | 10 | 13 |
| 2022 | 11 | 5 |
| 2023 | 8 | 4 |
| 2024 | 8 | 5 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
- F01C 20/24Control of, monitoring of, or safety arrangements for, machines or engines: characterised82
- F01C 20/10Control of, monitoring of, or safety arrangements for, machines or engines: characterised80
- F01C 20/18Control of, monitoring of, or safety arrangements for, machines or engines: characterised59
- F01C 20/06Control of, monitoring of, or safety arrangements for, machines or engines: specially36
- F01C 20/04Control of, monitoring of, or safety arrangements for, machines or engines: specially34
- F01C 20/28Safety arrangements32
- F01C 20/08Control of, monitoring of, or safety arrangements for, machines or engines: characterised21
- F01C 20/02Control of, monitoring of, or safety arrangements for, machines or engines: specially19
Recent patents
- Quieted front exhaust motor16 Dec 2025US 12,496,699 B2Ingersoll-Rand Industrial U.S., Inc.
- Dual gerotor apparatus, a powertrain assembley and an electrified vehicle27 May 2025US 12,313,067 B2Valeo Powertrain (Nanjing) Co., Ltd.
- Systems and methods for a partial state condenser10 Dec 2024US 12,163,430 B2Argyle Earth, Inc
- Valve position control12 Nov 2024US 12,140,033 B2ABB Schweiz AG
- Displacement power controllers and applications3 Sep 2024US 12,078,193 B2Perisseuma Technologies LLC
- Air motor with increased dwell at max vane extension7 Nov 2024US 2024/0368992 A1
- Quieted front exhaust motor24 Oct 2024US 2024/0351180 A1Ingersoll-Rand Industrial U.S., Inc.
- Valve Position Control28 Mar 2024US 2024/0102388 A1ABB Schweiz AG
- Systems and methods for a partial state condenser7 Mar 2024US 2024/0076986 A1Argyle Earth, Inc
- A dual gerotor apparatus, a powertrain assembley and an electrified vehicle11 Jan 2024US 2024/0011483 A1Valeo Powertrain (Nanjing) Co., Ltd.
Most cited
By later US patents
- Energy recovery system for large motor vehicles97US 5,121,607 A1992
- Respiratory therapy device and method79US 7,779,841 B2CareFusion 2200, Inc. · 2010
- Passive respiratory therapy device71US 8,025,054 B2CareFusion 2200, Inc. · 2011
- High efficiency positive displacement thermodynamic system67US 8,424,284 B22013
- Synchronizing and unloading system for scroll fluid device45US 4,927,340 AArthur D. Little, Inc. · 1990