F04C 2270/701
Cold start
F04C2270/701 (Cold start) appears on 55 US grants and 69 published applications in this corpus.
Search patents in F04C- Granted patents
- 55
- Published applications
- 69
- Assignees
- 48
- Inventors
- 180
- Latest grant
- 18 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 4 |
| 2006 | 2 | 2 |
| 2007 | 2 | 1 |
| 2008 | 0 | 3 |
| 2009 | 0 | 6 |
| 2010 | 1 | 1 |
| 2011 | 1 | 2 |
| 2012 | 1 | 8 |
| 2013 | 2 | 4 |
| 2014 | 5 | 7 |
| 2015 | 4 | 3 |
| 2016 | 7 | 2 |
| 2017 | 4 | 4 |
| 2018 | 0 | 5 |
| 2019 | 1 | 3 |
| 2020 | 6 | 3 |
| 2021 | 3 | 3 |
| 2022 | 4 | 4 |
| 2023 | 4 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Scroll compressor18 Nov 2025US 12,473,918 B2LG Electronics Inc.
- Scroll compressor and air conditioner having the same14 Nov 2023US 11,815,093 B2LG Electronics Inc.
- Vane pump31 Oct 2023US 11,802,559 B2ZF Friedrichshafen AG
- Scroll compressor1 Aug 2023US 11,713,756 B2LG Electronics Inc.
- Vane cell pump14 Mar 2023US 11,603,838 B2Schwäbische Hüttenwerke Automotive GmbH
- Scroll compressor5 Jun 2025US 2025/0180017 A1LG Electronics Inc.
- Scroll compressor and air conditioner having the same9 Jun 2022US 2022/0178371 A1LG Electronics Inc.
- Heat pump device, heat pump system, air conditioner, and refrigeration machine5 May 2022US 2022/0136753 A1Mitsubishi Electric Corporation
- Vane pump and method for the operation thereof7 Apr 2022US 2022/0106958 A1Hanon Systems Efp Deutschland GmbH
- Scroll compressor24 Feb 2022US 2022/0056908 A1LG Electronics Inc.
Most cited
By later US patents
- Rotary hydraulic vane pump with undervane passages for priming53US 4,386,891 AGeneral Motors Corporation · 1983
- State of charge adjusted compressor control27US 8,718,848 B2Bendix Commercial Vehicle Systems LLC · 2014
- Crankcase heater systems and methods for variable speed compressors24US 8,734,125 B2Emerson Climate Technologies, Inc. · 2014
- Rotary vane pump having enhanced cold start priming17US 5,147,183 AFord Motor Company · 1992
- Fluid pump17US 7,255,541 B2Kabushiki Kaisha Toyota Jidoshokki · 2007