F04C 2240/403
With inverter for speed control
Official title: with inverter for speed control
F04C2240/403 (With inverter for speed control) appears on 141 US grants and 178 published applications in this corpus.
Search patents in F04C- Granted patents
- 141
- Published applications
- 178
- Assignees
- 60
- Inventors
- 393
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 3 |
| 2002 | 4 | 3 |
| 2003 | 4 | 5 |
| 2004 | 2 | 4 |
| 2005 | 4 | 2 |
| 2006 | 1 | 4 |
| 2007 | 1 | 2 |
| 2008 | 1 | 6 |
| 2009 | 1 | 4 |
| 2010 | 0 | 3 |
| 2011 | 2 | 7 |
| 2012 | 6 | 4 |
| 2013 | 3 | 8 |
| 2014 | 4 | 12 |
| 2015 | 3 | 11 |
| 2016 | 8 | 6 |
| 2017 | 9 | 11 |
| 2018 | 9 | 7 |
| 2019 | 10 | 10 |
| 2020 | 8 | 14 |
| 2021 | 8 | 9 |
| 2022 | 5 | 5 |
| 2023 | 5 | 4 |
| 2024 | 8 | 9 |
| 2025 | 9 | 15 |
| 2026 | 11 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Compressor18 Aug 2026US 12,710,034 B2Samsung Electronics Co., Ltd.
- Electric compressor18 Aug 2026US 12,710,042 B2Kabushiki Kaisha Toyota Jidoshokki
- Electric compressor4 Aug 2026US 12,698,772 B2Hanon Systems
- Electric compressor21 Jul 2026US 12,687,167 B2Hanon Systems
- On-vehicle electric compressor16 Jul 2026US 2026/0205024 A1Sanden Corporation
- Inverter-integrated electric compressor2 Jul 2026US 2026/0189109 A1Sanden Corporation
- Inverter unit and electric compressor comprising same2 Jul 2026US 2026/0189153 A1Hanon Systems
- Electric compressor4 Jun 2026US 2026/0155705 A1Hanon Systems
- Electric compressor28 May 2026US 2026/0146607 A1Kabushiki Kaisha Toyota Jidoshokki
Most cited
By later US patents
- Oil free dry screw compressor including variable speed drive62US 6,474,950 B1Ingersoll-Rand Company · 2002
- Method of stopping scroll compressor that is driven by 3-phase DC motor60US 5,782,610 ASanden Corporation · 1998
- Scroll type compressor and refrigeration cycle using the same48US 5,211,031 AHitachi, Ltd. · 1993
- Method of controlling motor drive speed44US 7,259,533 B2LG Electronics Inc. · 2007
- Variable speed compressor protection system and method34US 8,459,053 B2Emerson Climate Technologies, Inc. · 2013