Y10T 137/2278
Pressure modulating relays or followers
Y10T137/2278 (Pressure modulating relays or followers) appears on 441 US grants and 93 published applications in this corpus.
Search patents in Y10T- Granted patents
- 441
- Published applications
- 93
- Assignees
- 236
- Inventors
- 610
- Latest grant
- 27 Apr 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 27 | 0 |
| 1977 | 13 | 0 |
| 1978 | 8 | 0 |
| 1979 | 10 | 0 |
| 1980 | 11 | 0 |
| 1981 | 17 | 0 |
| 1982 | 21 | 0 |
| 1983 | 14 | 0 |
| 1984 | 17 | 0 |
| 1985 | 27 | 0 |
| 1986 | 19 | 0 |
| 1987 | 23 | 0 |
| 1988 | 14 | 0 |
| 1989 | 14 | 0 |
| 1990 | 19 | 0 |
| 1991 | 15 | 0 |
| 1992 | 8 | 0 |
| 1993 | 9 | 0 |
| 1994 | 8 | 0 |
| 1995 | 9 | 0 |
| 1996 | 14 | 0 |
| 1997 | 9 | 0 |
| 1998 | 3 | 0 |
| 1999 | 10 | 0 |
| 2000 | 6 | 0 |
| 2001 | 11 | 1 |
| 2002 | 9 | 8 |
| 2003 | 3 | 3 |
| 2004 | 6 | 4 |
| 2005 | 3 | 4 |
| 2006 | 4 | 5 |
| 2007 | 4 | 5 |
| 2008 | 2 | 9 |
| 2009 | 4 | 3 |
| 2010 | 6 | 7 |
| 2011 | 2 | 8 |
| 2012 | 5 | 9 |
| 2013 | 8 | 5 |
| 2014 | 7 | 8 |
| 2015 | 5 | 3 |
| 2016 | 4 | 5 |
| 2017 | 3 | 1 |
| 2018 | 5 | 3 |
| 2019 | 1 | 1 |
| 2020 | 3 | 1 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Electro-pneumatic converter, use of an electro-pneumatic converter, positioner, and control unit27 Apr 2021US 10,989,229 B2Samson Aktiengesellschaft
- Generating two pneumatic signals to operate an actuator on a valve assembly28 Jul 2020US 10,724,555 B2Dresser, Inc.
- Torsion spring28 Jul 2020US 10,724,593 B2Hamilton Sundstrand Corporation
- Servovalve18 Feb 2020US 10,563,675 B2Hamilton Sundstrand Corporation
- Digital closed loop proportional hydraulic pressure controller8 Jan 2019US 10,175,703 B2Woodward, Inc.
- Electro-Pneumatic Converter, Use of an Electro-Pneumatic Converter, Positioner, and Control Unit26 Mar 2020US 2020/0096010 A1Samson Aktiengesellschaft
- Generating two pneumatic signals to operate an actuator on a valve assembly31 Jan 2019US 2019/0032683 A1Dresser, Inc.
- Torsion spring27 Sep 2018US 2018/0274616 A1Hamilton Sundstrand Corporation
- High-temperature and high-vibration capable armature assemblies for torque motor valve actuators with increased winding volume14 Jun 2018US 2018/0163887 A1Honeywell International Inc.
- Servovalve17 May 2018US 2018/0135661 A1Hamilton Sundstrand Corporation
Most cited
By later US patents
- Valve positioner with pressure feedback, dynamic correction and diagnostics203US 5,573,032 ARosemount Inc. · 1996
- Model based economizer control of an air handling unit159US 6,415,617 B1Johnson Controls Technology Company · 2002
- Apparatus for producing a rotary speed-dependent control pressure126US 4,388,941 ADanfoss A/S · 1983
- Valve positioner with pressure feedback, dynamic correction and diagnostics126US 5,549,137 ARosemount Inc. · 1996
- Integrated process control valve106US 5,251,148 AValtek, Inc. · 1993