F04C 2270/185
Controlled or regulated
F04C2270/185 (Controlled or regulated) appears on 109 US grants and 149 published applications in this corpus.
Search patents in F04C- Granted patents
- 109
- Published applications
- 149
- Assignees
- 95
- Inventors
- 328
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 1 | 2 |
| 2013 | 1 | 4 |
| 2014 | 2 | 11 |
| 2015 | 3 | 10 |
| 2016 | 6 | 6 |
| 2017 | 3 | 14 |
| 2018 | 8 | 17 |
| 2019 | 9 | 18 |
| 2020 | 12 | 15 |
| 2021 | 15 | 14 |
| 2022 | 11 | 8 |
| 2023 | 17 | 11 |
| 2024 | 6 | 7 |
| 2025 | 9 | 3 |
| 2026 | 3 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for controlling a compressor installation4 Aug 2026US 12,698,766 B2Kaeser Kompressoren SE
- Screw compressor14 Jul 2026US 12,680,545 B2Hitachi, Ltd.
- Systems and methods for water removal in compressors3 Feb 2026US 12,539,491 B2Doosan Bobcat North America, Inc.
- Vacuum line and method for controlling a vacuum line to reduce explosion potential via injection of diluent gas to lower flammable gas concentration16 Dec 2025US 12,496,563 B2Pfeiffer Vacuum GmbH
- Scroll compressor18 Nov 2025US 12,473,916 B2LG Electronics Inc.
- Device for increasing pressure between an oil pump housing and an oil pump cover10 Sep 2026US 2026/0266288 A1Volvo Truck Corporation
- Gas Compressor20 Aug 2026US 2026/0243258 A1Hitachi Industrial Equipment Systems Co., Ltd.
- Air Compressor30 Jul 2026US 2026/0218705 A1Hitachi Industrial Equipment Systems Co., Ltd.
- Systems and methods for operation modes for an air compressor18 Jun 2026US 2026/0168487 A1Doosan Bobcat North America, Inc.
- Screw Compressor30 Apr 2026US 2026/0117771 A1Hitachi, Ltd.
Most cited
By later US patents
- Method for controlling fluid flow through a compressed fluid system41US 6,123,510 AIngersoll-Rand Company · 2000
- Oil pump system27US 5,547,349 AAisin Seiki Kabushiki Kaisha · 1996
- Induction regulator valve for rotary compressors21US 5,533,873 AHoerbiger Ventilwerke Aktiengesellschaft · 1996
- Variable displacement oil pump10US 9,410,514 B2Hitachi Automotive Systems, Ltd. · 2016
- Digital pressure switch systems and methods8US 11,174,857 B1General Air Products, Inc. · 2021