F04C 2270/051
Controlled or regulated
F04C2270/051 (Controlled or regulated) appears on 39 US grants and 49 published applications in this corpus.
Search patents in F04C- Granted patents
- 39
- Published applications
- 49
- Assignees
- 34
- Inventors
- 97
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 3 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 3 | 3 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 2 |
| 2017 | 1 | 6 |
| 2018 | 2 | 3 |
| 2019 | 3 | 3 |
| 2020 | 4 | 4 |
| 2021 | 4 | 4 |
| 2022 | 2 | 3 |
| 2023 | 4 | 6 |
| 2024 | 4 | 5 |
| 2025 | 5 | 3 |
| 2026 | 5 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Scroll-type electric compressor6 Oct 2026US 12,753,761 B2Sanden Corporation
- Variable-speed refrigerating scroll compressor with an oil flow regulating device28 Jul 2026US 12,692,864 B2Danfoss Commercial Compressors
- Compressor/expander machine23 Jun 2026US 12,663,192 B2BITZER Kuehlmaschinenbau GmbH
- Control method for compressor and compressor system12 May 2026US 12,624,694 B2Danfoss (Tianjin) Ltd.
- Compressor7 Apr 2026US 12,595,793 B2Hitachi Industrial Equipment Systems Co., Ltd.
- Scroll-type electric compressor7 May 2026US 2026/0126044 A1Sanden Corporation
- Noise and vibration management for smoke evacuation system21 Aug 2025US 2025/0264104 A1Megadyne Medical Products, Inc.
- A variable-speed refrigerating scroll compressor with an oil flow regulating device24 Apr 2025US 2025/0129781 A1Danfoss Commercial Compressors
- Compressor/Expander Machine6 Feb 2025US 2025/0044007 A1BITZER Kuehlmaschinenbau GmbH
- Compressor12 Sep 2024US 2024/0301882 A1Hitachi Industrial Equipment Systems Co., Ltd.
Most cited
By later US patents
- Start-up control device and method for electric scroll compressor16US 8,342,810 B2Sanden Corporation · 2013
- System and method for controlling a system that includes fixed speed and variable speed compressors13US 9,599,118 B2Trane International Inc. · 2017
- System to pump fluid and control thereof11US 10,072,676 B2Project Phoenix, LLC · 2018
- System and method for performing cooling9US 5,732,560 ASvenska Rotor Maskiner AB · 1998
- Method in a milking system for creating a required vacuum level and computer program products6US 8,381,679 B2DeLaval Holding AB · 2013