F04C 21/002
The piston oscillating around a fixed axis
Official title: {the piston oscillating around a fixed axis}
F04C21/002 (The piston oscillating around a fixed axis) appears on 18 US grants and 17 published applications in this corpus.
Search patents in F04C- Granted patents
- 18
- Published applications
- 17
- Assignees
- 10
- Inventors
- 31
- Latest grant
- 26 Dec 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 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 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 3 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 2 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 2 |
| 2018 | 0 | 3 |
| 2019 | 2 | 3 |
| 2020 | 3 | 2 |
| 2021 | 2 | 0 |
| 2022 | 1 | 1 |
| 2023 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Piston machine, modular construction system for a piston machine, and method for producing a piston machine26 Dec 2023US 11,852,017 B2RapSon GmbH
- Multi-chamber compressor of mechanical vapor re-compression and water treatment methods4 Jul 2023US 11,691,895 B2
- Rotational displacement apparatus9 Aug 2022US 11,408,286 B2Fetu Limited
- Gas ejection apparatus30 Mar 2021US 10,962,007 B2DENSO TEN Limited
- Gas ejection apparatus5 Jan 2021US 10,883,503 B2DENSO TEN Limited
- Piston machine, modular construction system for a piston machine, and method for producing a piston machine3 Feb 2022US 2022/0034226 A1RapSon GmbH
- Multi-Chamber Compressor Of Mechanical Vapor Re-Compression And Water Treatment Methods29 Oct 2020US 2020/0339439 A1
- Rotational Displacement Apparatus30 Jan 2020US 2020/0032652 A1Fetu Limited
- Gas ejection apparatus16 May 2019US 2019/0145407 A1DENSO TEN Limited
- Gas ejection apparatus16 May 2019US 2019/0145411 A1DENSO TEN Limited
Most cited
By later US patents
- Ventilator for assisting the breathing of a patient26US 5,086,767 ACanadian Aging & Rehabilitation Product Development Corporation · 1992
- Pivotal piston machine8US 4,272,229 AWABCO Westinghouse GmbH · 1981
- Ultra-low friction air pump for creating oscillatory or pulsed jets8US 7,980,516 B2The Boeing Company · 2011
- Birotational pump6US 4,861,236 A1989
- Rotational displacement apparatus3US 10,443,383 B2Fetu Limited · 2019