F01D 21/18
Involving hydraulic means
Official title: involving hydraulic means
F01D21/18 (Involving hydraulic means) appears on 47 US grants and 31 published applications in this corpus.
Search patents in F01D- Granted patents
- 47
- Published applications
- 31
- Assignees
- 33
- Inventors
- 97
- Latest grant
- 18 Jun 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 2 |
| 2008 | 2 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 2 | 3 |
| 2014 | 1 | 2 |
| 2015 | 1 | 1 |
| 2016 | 1 | 3 |
| 2017 | 3 | 4 |
| 2018 | 5 | 3 |
| 2019 | 3 | 2 |
| 2020 | 3 | 1 |
| 2021 | 2 | 2 |
| 2022 | 1 | 2 |
| 2023 | 1 | 1 |
| 2024 | 3 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Self contained hydraulic lock apparatus18 Jun 2024US 12,012,860 B2Mesa Associates, Inc.
- Steam turbine valve abnormality monitoring system, steam turbine valve drive device, steam turbine valve device, and steam turbine plant19 Mar 2024US 11,933,183 B2Kabushiki Kaisha Toshiba
- On-line verifiable trip and throttle valve actuator9 Jan 2024US 11,867,072 B2Woodward, Inc.
- Electrohydrostatic actution system, hydraulic circuit of electrohydrostatic actution system, and steam turbine system including same7 Nov 2023US 11,808,158 B2Moog Japan Ltd.
- Emergency shut-off device7 Jun 2022US 11,352,899 B2Mitsubishi Heavy Industries Compressor Corporation
- On-line verifiable trip and throttle valve actuator8 Jun 2023US 2023/0175415 A1Woodward, Inc.
- Electrohydrostatic actution system, hydraulic circuit of electrohydrostatic actution system, and steam turbine system including same12 May 2022US 2022/0145770 A1Moog Japan Ltd.
- Self contained hydraulic lock apparatus12 May 2022US 2022/0145774 A1Mesa Associates, Inc.
- Steam turbine valve abnormality monitoring system, steam turbine valve drive device, steam turbine valve device, and steam turbine plant16 Dec 2021US 2021/0388735 A1Kabushiki Kaisha Toshiba
- Actuating drive having a hydraulic outflow booster1 Apr 2021US 2021/0095698 A1Moog Inc.
Most cited
By later US patents
- Facility for the monitoring of physical quantities on systems18US 4,637,587 ABBC Brown, Boveri & Company, Limited · 1987
- Fast opening valve apparatus17US 4,585,205 AGeneral Electric Company · 1986
- Fuel control16US 4,493,187 AUnited Technologies Corporation · 1985
- Redundant trip solenoid valve shut-off for gas turbine fuel system13US 5,561,976 AGeneral Electric Company · 1996
- Supply circuit for a two-tube hydraulic system12US 5,280,807 AAsea Brown Boveri AG · 1994