F15C 1/00
Circuit elements having no moving parts
F15C1/00 (Circuit elements having no moving parts) appears on 435 US grants and 215 published applications in this corpus.
Search patents in F15C- Granted patents
- 435
- Published applications
- 215
- Assignees
- 209
- Inventors
- 596
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 12 | 0 |
| 1978 | 14 | 0 |
| 1979 | 13 | 0 |
| 1980 | 16 | 0 |
| 1981 | 12 | 0 |
| 1982 | 3 | 0 |
| 1983 | 10 | 0 |
| 1984 | 9 | 0 |
| 1985 | 12 | 0 |
| 1986 | 8 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 9 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 8 | 0 |
| 1995 | 6 | 0 |
| 1996 | 5 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 15 | 0 |
| 2000 | 8 | 0 |
| 2001 | 8 | 6 |
| 2002 | 11 | 16 |
| 2003 | 10 | 6 |
| 2004 | 10 | 6 |
| 2005 | 4 | 11 |
| 2006 | 15 | 8 |
| 2007 | 4 | 8 |
| 2008 | 3 | 15 |
| 2009 | 5 | 6 |
| 2010 | 8 | 5 |
| 2011 | 6 | 10 |
| 2012 | 9 | 14 |
| 2013 | 5 | 10 |
| 2014 | 17 | 15 |
| 2015 | 12 | 5 |
| 2016 | 8 | 8 |
| 2017 | 11 | 8 |
| 2018 | 9 | 7 |
| 2019 | 8 | 6 |
| 2020 | 5 | 14 |
| 2021 | 13 | 7 |
| 2022 | 9 | 4 |
| 2023 | 7 | 6 |
| 2024 | 7 | 7 |
| 2025 | 5 | 5 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F15C 1/22Oscillators136
- F15C 1/02Details92
- F15C 1/16Vortex devices, i.e. devices in which use is made of the pressure77
- F15C 1/08Boundary-layer devices49
- F15C 1/14Stream-interaction devices47
- F15C 1/18Turbulence devices, i.e. devices in which a controlling stream will cause a19
- F15C 1/005Circuit elements having no moving parts: for measurement techniques16
- F15C 1/002Circuit elements having no moving parts: for controlling engines, turbines, compressors14
All 14 subgroupsShow fewer
- F15C 1/003Circuit elements having no moving parts: for process regulation7
- F15C 1/008Circuit elements having no moving parts: other applications7
- F15C 1/006Circuit elements having no moving parts: for aeronautics5
- F15C 1/007Circuit elements having no moving parts: for indicating devices for fluid signals4
- F15C 1/20Direct-impact devices i.e., devices in which two collinear opposing power streams are3
- F15C 1/001Circuit elements having no moving parts: for punched-card machines0
Recent patents
- Multi-head fluidic oscillators4 Aug 2026US 12,698,623 B2Kohler Co.
- Powder protecting three-way valve with cylindrical heating element14 Apr 2026US 12,601,411 B2Aotech Co.,Ltd.
- Material flow amplifier16 Dec 2025US 12,497,981 B2Vortex Pipe Systems LLC
- Fluid flow control system employing a fluidic diode for control pressure2 Dec 2025US 12,486,739 B2Halliburton Energy Services.Inc.
- Variable characteristics fluidic oscillator and fluidic oscillator with three dimensional output jet and associated methods28 Oct 2025US 12,453,977 B2Ohio State Innovation Foundation
- Swirling flow generating device that can change the rotation direction periodically2 Jul 2026US 2026/0185550 A1Roketsan Roket Sanayii Ticaret A. S.
- Fluid flow control system employing a fluidic diode for control pressure19 Feb 2026US 2026/0049540 A1Halliburton Energy Services.Inc.
- Supersonic fluidic oscillator and method of controlling a superplastic forming process24 Jul 2025US 2025/0235918 A1Aem Power Systems Inc.
- Household appliance apparatus5 Jun 2025US 2025/0178002 A1LIXIL Corporation
- Fluid flow control system employing a fluidic diode for control pressure6 Mar 2025US 2025/0075598 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Microfabricated elastomeric valve and pump systems619US 6,408,878 B1California Institute of Technology · 2002
- Fluid circuit components based upon passive fluid dynamics399US 6,296,020 B1BioMicro Systems, Inc. · 2001
- Valveless liquid microswitch378US 5,726,404 AUniversity of Washington · 1998
- Devices and methods for using centripetal acceleration to drive fluid movement in a microfluidics system370US 6,319,469 B1Silicon Valley Bank · 2001
- Multi-channel microfluidic system design with balanced fluid flow distribution305US 6,637,463 B1BioMicro Systems, Inc. · 2003