F01C 21/045
Control systems for the circulation of the lubricant
Official title: {Control systems for the circulation of the lubricant}
F01C21/045 (Control systems for the circulation of the lubricant) appears on 11 US grants and 13 published applications in this corpus.
Search patents in F01C- Granted patents
- 11
- Published applications
- 13
- Assignees
- 12
- Inventors
- 32
- Latest grant
- 18 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 2 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 3 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 2 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 1 | 2 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Combined sealing piece, volumetric machine and wide fuel engine18 Nov 2025US 12,473,872 B2
- Rotary engine4 Oct 2022US 11,459,891 B2LG Electronics Inc.
- Rotary engine lubrication system using intensifier injector16 Nov 2021US 11,174,732 B1Pratt & Whitney Canada Corp.
- ORC for transforming waste heat from a heat source into mechanical energy and compressor installation making use of such an ORC29 Sep 2020US 10,788,203 B2Atlas Copco Airpower, Naamloze Vennootschap
- Method and device for rapid oil heating for oil-lubricated expansion machines12 Feb 2019US 10,202,872 B2Orcan Energy AG
- Combined Sealing Piece, Volumetric Machine and Wide Fuel Engine19 Jun 2025US 2025/0198363 A1
- Rotary engine lubrication system using intensifier injector18 Nov 2021US 2021/0355898 A1Pratt & Whitney Canada Corp.
- Rotary engine7 Jan 2021US 2021/0003011 A1LG Electronics Inc.
- Orc for transforming waste heat from a heat source into mechanical energy and compressor installation making use of such an orc30 Aug 2018US 2018/0245788 A1Atlas Copco Airpower, Naamloze Vennootschap
- Method and Device For Rapid Oil Heating For Oil-Lubricated Expansion Machines1 Feb 2018US 2018/0030857 A1Orcan Energy AG
Most cited
By later US patents
- Engine lubricating system18US 4,774,918 AMazda Motor Corporation · 1988
- Lubricant metering system for rotary internal combustion engine6US 4,463,718 ADeere & Company · 1984
- Dual compressor air conditioning system with oil level regulation6US 8,109,116 B2Mitsubishi Electric Corporation · 2012
- Lubrication of volumetrically operating expansion machines2US 9,732,616 B2Orcan Energy AG · 2017
- Method and device for rapid oil heating for oil-lubricated expansion machines1US 10,202,872 B2Orcan Energy AG · 2019