F04C 29/122
Arrangements for supercharging the working space
Official title: {Arrangements for supercharging the working space (similar arrangements for internal combustion engines F02B33/00, F02B37/00)}
F04C29/122 (Arrangements for supercharging the working space) appears on 68 US grants and 37 published applications in this corpus.
Search patents in F04C- Granted patents
- 68
- Published applications
- 37
- Assignees
- 45
- Inventors
- 123
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 1 |
| 2003 | 3 | 2 |
| 2004 | 2 | 3 |
| 2005 | 1 | 2 |
| 2006 | 1 | 2 |
| 2007 | 1 | 2 |
| 2008 | 0 | 1 |
| 2009 | 2 | 3 |
| 2010 | 2 | 1 |
| 2011 | 0 | 0 |
| 2012 | 3 | 2 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 2 | 4 |
| 2016 | 2 | 3 |
| 2017 | 4 | 2 |
| 2018 | 0 | 1 |
| 2019 | 2 | 2 |
| 2020 | 2 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Refrigeration system incorporating scroll type compressor84US 4,475,360 AHitachi, Ltd. · 1984
- Capacity modulation for plural compressors70US 6,672,846 B2Copeland Corporation · 2004
- Scroll type compressor with injection mechanism60US 5,253,489 ASanden Corporation · 1993
- Pulse-free blower51US 4,215,977 ACalspan Corporation · 1980
- Vapor injection system for a scroll compressor51US 7,771,178 B2Emerson Climate Technologies, Inc. · 2010