F04C 18/045
Having a c-shaped piston
Official title: {having a C-shaped piston}
F04C18/045 (Having a c-shaped piston) appears on 25 US grants and 27 published applications in this corpus.
Search patents in F04C- Granted patents
- 25
- Published applications
- 27
- Assignees
- 7
- Inventors
- 38
- Latest grant
- 13 Jul 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 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 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 4 |
| 2007 | 1 | 5 |
| 2008 | 2 | 1 |
| 2009 | 5 | 4 |
| 2010 | 2 | 6 |
| 2011 | 1 | 0 |
| 2012 | 3 | 0 |
| 2013 | 3 | 1 |
| 2014 | 0 | 3 |
| 2015 | 1 | 3 |
| 2016 | 4 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
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Most cited
By later US patents
- Rotary type compressor48US 7,802,972 B2Daikin Industries, Ltd. · 2010
- Mounting structure of discharge valve in scroll compressor39US 7,891,961 B2Daikin Industries, Ltd. · 2011
- Rolling piston compressor26US 5,399,076 ANippon Soken, Inc. · 1995
- Rotary compressor12US 7,563,080 B2Daikin Industries, Ltd. · 2009
- Rotary compressor with low pressure space surrounding outer peripheral face of compression mechanism and discharge passage passing through housing11US 7,607,904 B2Daikin Industries, Ltd. · 2009