F01C 20/24
Control of, monitoring of, or safety arrangements for, machines or engines: characterised
Official title: characterised by using valves for controlling pressure or flow rate, e.g. discharge valves (F01C20/10 takes precedence)
F01C20/24 (Control of, monitoring of, or safety arrangements for, machines or engines: characterised) appears on 82 US grants and 71 published applications in this corpus.
Search patents in F01C- Granted patents
- 82
- Published applications
- 71
- Assignees
- 47
- Inventors
- 146
- Latest grant
- 10 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 3 |
| 2008 | 2 | 5 |
| 2009 | 1 | 1 |
| 2010 | 4 | 3 |
| 2011 | 2 | 2 |
| 2012 | 0 | 6 |
| 2013 | 2 | 5 |
| 2014 | 5 | 5 |
| 2015 | 5 | 8 |
| 2016 | 3 | 1 |
| 2017 | 6 | 9 |
| 2018 | 5 | 7 |
| 2019 | 5 | 4 |
| 2020 | 7 | 3 |
| 2021 | 1 | 2 |
| 2022 | 3 | 1 |
| 2023 | 2 | 2 |
| 2024 | 3 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Systems and methods for a partial state condenser10 Dec 2024US 12,163,430 B2Argyle Earth, Inc
- External combustion rotary engine4 Jun 2024US 12,000,287 B2
- Flow path diverter for pneumatic tool30 Jan 2024US 11,883,942 B2Snap-on Incorporated
- Systems and methods for a heat engine system14 Nov 2023US 11,814,963 B2Argyle Earth, Inc
- Fluid circulation system and method for operating same, computer-readable medium, and controller26 Sep 2023US 11,767,758 B2Emerson Climate Technologies (Suzhou) Co., Ltd.
- Systems and methods for a partial state condenser7 Mar 2024US 2024/0076986 A1Argyle Earth, Inc
- Systems and methods for a heat engine system14 Sep 2023US 2023/0287793 A1Argyle Earth, Inc
- External combustion rotary engine3 Aug 2023US 2023/0243261 A1
- Fluid circulation system and method for operating same, computer-readable medium, and controller3 Nov 2022US 2022/0349307 A1Emerson Climate Technologies (Suzhou) Co., Ltd.
- Flow path diverter for pneumatic tool30 Dec 2021US 2021/0402587 A1Snap-on Incorporated
Most cited
By later US patents
- 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
- Power regulator for a pressure fluid motor37US 5,293,747 AIngersoll-Rand Company · 1994
- Control system for controlling input power to variable displacement hydraulic pumps of a hydraulic system28US 4,809,504 AHitachi Construction Machinery Co., Ltd. · 1989