F04C 2230/602
Gap
Official title: Gap; Clearance
F04C2230/602 (Gap) appears on 146 US grants and 148 published applications in this corpus.
Search patents in F04C- Granted patents
- 146
- Published applications
- 148
- Assignees
- 111
- Inventors
- 385
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 3 |
| 2002 | 4 | 2 |
| 2003 | 3 | 10 |
| 2004 | 6 | 8 |
| 2005 | 3 | 5 |
| 2006 | 6 | 5 |
| 2007 | 3 | 7 |
| 2008 | 3 | 5 |
| 2009 | 3 | 3 |
| 2010 | 5 | 5 |
| 2011 | 8 | 5 |
| 2012 | 1 | 2 |
| 2013 | 1 | 2 |
| 2014 | 3 | 8 |
| 2015 | 4 | 3 |
| 2016 | 5 | 6 |
| 2017 | 3 | 7 |
| 2018 | 5 | 8 |
| 2019 | 6 | 7 |
| 2020 | 6 | 14 |
| 2021 | 12 | 7 |
| 2022 | 11 | 8 |
| 2023 | 6 | 5 |
| 2024 | 8 | 8 |
| 2025 | 5 | 3 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotary machine unit, compressor, and refrigeration device2 Jun 2026US 12,646,982 B2Daikin Indusries, Ltd.
- Scroll compressor10 Feb 2026US 12,546,314 B2Sanden Corporation
- Scroll compressor with intermediate injection18 Nov 2025US 12,474,083 B2Trane International Inc.
- Low coefficient of expansion rotors for blowers21 Oct 2025US 12,448,968 B2Industrial Technologies and Services, LLC
- Screw pump with a tapered suction-side section and a pressure-side section with a decreasing clearance5 Aug 2025US 12,378,961 B2Leybold Aktiengesellschaft
- Rotary Engine Housing16 Jul 2026US 2026/0201831 A1Pratt & Whitney Canada Corp.
- Adjustable pump for pumping a liquid food product19 Mar 2026US 2026/0078755 A1Tetra Laval Holdings & Finance S. A.
- Scroll compressor20 Nov 2025US 2025/0354554 A1Sanden Corporation
- Particle adjusting drilling assembly and method29 May 2025US 2025/0172043 A1Workover Solutions, Inc.
- Scroll pump3 Apr 2025US 2025/0109747 A1Edwards Limited
Most cited
By later US patents
- Method of making an efficiency enhanced fluid pump or compressor47US 5,638,600 AFord Motor Company · 1997
- Solid lubricant coating for fluid pump or compressor45US 5,554,020 AFord Motor Company · 1996
- Evacuating apparatus40US 5,709,537 AMatsushita Electric Industrial Co., Ltd. · 1998
- Advanced scroll compressor, vacuum pump, and expander36US 7,942,655 B2Air Squared, Inc. · 2011
- Hermetic compressor assembly having a suction chamber and twin axially disposed discharge chambers32US 6,171,076 B2Tecumseh Products Company · 2001