F15C 4/00
Circuit elements characterised by their special functions
F15C4/00 (Circuit elements characterised by their special functions) appears on 34 US grants and 4 published applications in this corpus.
Search patents in F15C- Granted patents
- 34
- Published applications
- 4
- Assignees
- 26
- Inventors
- 61
- Latest grant
- 25 Jan 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 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 | 1 | 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 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus and methods for fluidic amplification25 Jan 2022US 11,231,055 B1Facebook Technologies, LLC
- Composable PFET fluidic device17 Mar 2020US 10,591,933 B1Facebook Technologies, LLC
- Air conditioning indoor unit12 Jan 2016US 9,234,671 B2Daikin Industries, Ltd.
- Fluid microdiode24 Mar 1998US 5,730,187 A
- Temperature control valve without moving parts6 May 1997US 5,626,166 AThe United States of America as represented by the Secretary of the Navy
- Sheet-based fluidic diodes for embedded fluidic circuitry in soft devices16 Apr 2026US 2026/0104065 A1William Marsh Rice University
- Air conditioning indoor unit17 Mar 2016US 2016/0076786 A1Daikin Industries, Ltd.
- Guiding assembly and coating device using same4 Dec 2014US 2014/0352620 A1Hon Hai Precision Industry Co., Ltd.
- Air conditioning indoor unit14 Aug 2014US 2014/0227961 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Pneumatic logic circuit134US 4,245,673 ALa Telemechanique Electrique · 1981
- Fluid microdiode51US 5,730,187 A1998
- Fluid pressure control28US 4,106,525 AThe Secretary of State for Industry in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland · 1978
- Comparator for coded signals represented by a pressure of fluid22US 3,934,611 A1976
- Digital fluid flow control apparatus11US 4,248,263 APowell Industries, Inc. · 1981