F04C 18/3564
The surfaces of the inner and outer member, forming the working space
Official title: {the surfaces of the inner and outer member, forming the working space, being surfaces of revolution}
F04C18/3564 (The surfaces of the inner and outer member, forming the working space) appears on 386 US grants and 405 published applications in this corpus.
Search patents in F04C- Granted patents
- 386
- Published applications
- 405
- Assignees
- 63
- Inventors
- 701
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 6 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 8 | 2 |
| 2002 | 7 | 7 |
| 2003 | 8 | 9 |
| 2004 | 4 | 18 |
| 2005 | 10 | 37 |
| 2006 | 21 | 31 |
| 2007 | 20 | 16 |
| 2008 | 14 | 35 |
| 2009 | 17 | 17 |
| 2010 | 17 | 20 |
| 2011 | 13 | 21 |
| 2012 | 13 | 20 |
| 2013 | 10 | 9 |
| 2014 | 17 | 9 |
| 2015 | 16 | 15 |
| 2016 | 10 | 14 |
| 2017 | 10 | 20 |
| 2018 | 14 | 15 |
| 2019 | 19 | 6 |
| 2020 | 8 | 14 |
| 2021 | 6 | 20 |
| 2022 | 22 | 10 |
| 2023 | 11 | 11 |
| 2024 | 23 | 5 |
| 2025 | 10 | 14 |
| 2026 | 5 | 10 |
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.
- Compressor4 Aug 2026US 12,698,771 B2Carrier Japan Corporation
- Rotary compressor for rapid freezing appliances9 Jun 2026US 12,650,128 B2Rechi Precision Co., Ltd.
- Oil separator for compressor and compressor with oil separator12 May 2026US 12,624,695 B2Mahle International GmbH
- Compressor unit and refrigeration apparatus with reduced vibrations3 Mar 2026US 12,565,891 B2Daikin Industries, Ltd.
- Rotary compressor and refrigeration apparatus6 Aug 2026US 2026/0226898 A1Daikin Industries, Ltd.
- Hermetic compressor and refrigeration cycle apparatus30 Jul 2026US 2026/0218707 A1Mitsubishi Electric Corporation
- Hermetic compressor and refrigeration cycle apparatus16 Jul 2026US 2026/0201886 A1Mitsubishi Electric Corporation
- Rotary compressor25 Jun 2026US 2026/0177057 A1Siam Compressor Industry Co., Ltd.
- Rotary compressor and refrigeration apparatus4 Jun 2026US 2026/0153087 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Rotary compressor with reduced lubrication sensitivity147US 5,947,710 ACarrier Corporation · 1999
- Two stage gas compressor52US 5,322,424 AMatsushita Electric Industrial Co., Ltd. · 1994
- Rotary type compressor48US 7,802,972 B2Daikin Industries, Ltd. · 2010
- Means for fastening an airbag module47US 5,810,535 AMST Automotive GmbH · 1998
- Refrigerating cycle apparatus with a compressor having simultaneously driven two compressor means45US 5,094,085 AKabushiki Kaisha Toshiba · 1992