F04C 28/20
By changing the form of the inner or outer contour of the
Official title: by changing the form of the inner or outer contour of the working chamber
F04C28/20 (By changing the form of the inner or outer contour of the) appears on 7 US grants and 7 published applications in this corpus.
Search patents in F04C- Granted patents
- 7
- Published applications
- 7
- Assignees
- 8
- Inventors
- 25
- Latest grant
- 13 Dec 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 0 | 1 |
| 2003 | 1 | 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 | 2 |
| 2017 | 1 | 2 |
| 2018 | 2 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
By publication year.
Recent patents
- Compressor and air conditioner13 Dec 2022US 11,525,446 B2Green Refrigeration Equipment Engineering Research Center of Zhuhai Gree Co., Ltd.
- Scroll compressor9 Mar 2021US 10,941,773 B2Panasonic Intellectual Property Management Co., Ltd.
- Screw compressor with control slider and detector6 Oct 2020US 10,794,382 B2Bitzer Kuehlmaschinebau GmbH
- Eccentric screw pump with split stator housing25 Dec 2018US 10,161,397 B2Seepex GmbH
- Rotary pump with a compact setting structure for adjusting the delivery volume3 Apr 2018US 9,932,982 B2Schwäbische Hüttenwerke Automotive GmbH
- Compressor and air conditioner17 Sep 2020US 2020/0291948 A1Green Refrigeration Equipment Engineering Research Center of Zhuhai Gree Co., Ltd.
- Scroll compressor14 Feb 2019US 2019/0048874 A1Panasonic Intellectual Property Management Co., Ltd.
- Eccentric screw pump21 Sep 2017US 2017/0268505 A1Seepex GmbH
- Screw Compressor27 Jul 2017US 2017/0211574 A1Bitzer Kuehlmaschinebau GmbH
- Scroll-type compressor4 Aug 2016US 2016/0222965 A1Denso Corporation
Most cited
By later US patents
- Screw compressor with control slider and detector16US 10,794,382 B2Bitzer Kuehlmaschinebau GmbH · 2020
- Hydristor heat pump14US 6,612,117 B22003
- Eccentric screw pump with split stator housing3US 10,161,397 B2Seepex GmbH · 2018
- Rotary pump with a compact setting structure for adjusting the delivery volume2US 9,932,982 B2Schwäbische Hüttenwerke Automotive GmbH · 2018
- Scroll compressor1US 10,941,773 B2Panasonic Intellectual Property Management Co., Ltd. · 2021