F15C 1/002
Circuit elements having no moving parts: for controlling engines, turbines, compressors
Official title: {for controlling engines, turbines, compressors (starting, speed regulation, temperature control or the like) (control of internal-combustion piston engines F02D; of turbines F01D, F02C; of fans F04D27/00; speedometers G01P)}
F15C1/002 (Circuit elements having no moving parts: for controlling engines, turbines, compressors) appears on 14 US grants and 2 published applications in this corpus.
Search patents in F15C- Granted patents
- 14
- Published applications
- 2
- Assignees
- 10
- Inventors
- 19
- Latest grant
- 7 Apr 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Fluidic device7 Apr 2020US 10,611,466 B2ROLLS-ROYCE plc
- Apparatus for the production of air gases by the cryogenic separation of air with variable liquid production and power usage7 May 2019US 10,281,206 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Temperature control valve without moving parts6 May 1997US 5,626,166 AThe United States of America as represented by the Secretary of the Navy
- Fluidic pump control systems1 Aug 1989US 4,852,613 AUnited Kingdon Atomic Energy Authority
- Fluidic set point amplifier apparatus and method, and uses thereof30 May 1989US 4,833,880 AAllied-Signal Inc.
Most cited
By later US patents
- Constant mass air-fuel ratio fluidic fuel-injection system16US 3,937,195 AThe United States of America as represented by the Secretary of the Army · 1976
- Fluidic pump control systems9US 4,852,613 AUnited Kingdon Atomic Energy Authority · 1989
- Hydraulic fluidic level control system8US 3,983,636 AThe United States of America as represented by the Secretary of the Navy · 1976
- Dump delay valve8US 4,391,294 ABorg-Warner Corporation · 1983
- Fluidic set point amplifier apparatus and method, and uses thereof7US 4,833,880 AAllied-Signal Inc. · 1989