F04C 23/008
Hermetic pumps
Official title: {Hermetic pumps}
F04C23/008 (Hermetic pumps) appears on 2,491 US grants and 2,617 published applications in this corpus.
Search patents in F04C- Granted patents
- 2,491
- Published applications
- 2,617
- Assignees
- 301
- Inventors
- 3,299
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 8 | 0 |
| 1986 | 7 | 0 |
| 1987 | 17 | 0 |
| 1988 | 14 | 0 |
| 1989 | 16 | 0 |
| 1990 | 20 | 0 |
| 1991 | 26 | 0 |
| 1992 | 22 | 0 |
| 1993 | 28 | 0 |
| 1994 | 21 | 0 |
| 1995 | 23 | 0 |
| 1996 | 34 | 0 |
| 1997 | 19 | 0 |
| 1998 | 27 | 0 |
| 1999 | 16 | 0 |
| 2000 | 40 | 0 |
| 2001 | 53 | 12 |
| 2002 | 67 | 73 |
| 2003 | 67 | 70 |
| 2004 | 52 | 103 |
| 2005 | 41 | 89 |
| 2006 | 69 | 117 |
| 2007 | 57 | 69 |
| 2008 | 51 | 101 |
| 2009 | 65 | 109 |
| 2010 | 61 | 121 |
| 2011 | 63 | 110 |
| 2012 | 99 | 91 |
| 2013 | 72 | 112 |
| 2014 | 72 | 100 |
| 2015 | 96 | 113 |
| 2016 | 92 | 113 |
| 2017 | 96 | 109 |
| 2018 | 104 | 119 |
| 2019 | 100 | 99 |
| 2020 | 101 | 131 |
| 2021 | 112 | 95 |
| 2022 | 123 | 118 |
| 2023 | 111 | 119 |
| 2024 | 161 | 105 |
| 2025 | 106 | 125 |
| 2026 | 48 | 94 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Vertical type compressor and laundry treating apparatus having the same22 Sep 2026US 12,742,456 B2LG Electronics Inc.
- Scroll compressor15 Sep 2026US 12,736,052 B2Kabushiki Kaisha Toyota Jidoshokki
- Electric compressor18 Aug 2026US 12,710,042 B2Kabushiki Kaisha Toyota Jidoshokki
- Electric compressor with a hermetic terminal14 Jul 2026US 12,683,323 B2Motor Competence Center Holding Flensburg GmbH
- Electric compressor with passive pressure system between high and low pressure regions9 Jun 2026US 12,650,126 B2Mahle International GmbH
- Motorized device comprising a member with eccentric movement1 Oct 2026US 2026/0298242 A1Sonceboz Motion Boncourt SA
- Scroll fluid machine with elastic member27 Aug 2026US 2026/0251140 A1Anest Iwata Corporation
- Displacement machine according to the spiral principle27 Aug 2026US 2026/0251141 A1
- Co-rotating scroll compressor27 Aug 2026US 2026/0251142 A1Kabushiki Kaisha Toyota Jioshokki
- Co-rotating scroll compressor20 Aug 2026US 2026/0243256 A1Kabushiki Kaisha Toyota Jidoshokki
Most cited
By later US patents
- Scroll-type machine with axially compliant mounting226US 4,877,382 ACopeland Corporation · 1989
- Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor194US 6,047,557 ACopeland Corporation · 2000
- Compressor diagnostic system172US 6,615,594 B2Copeland Corporation · 2003
- Capacity modulated scroll machine162US 5,613,841 ACopeland Corporation · 1997
- Capacity modulated scroll machine156US 5,741,120 ACopeland Corporation · 1998