F01M 2013/0422
Separating oil and gas with a centrifuge device
Official title: {Separating oil and gas with a centrifuge device}
F01M2013/0422 (Separating oil and gas with a centrifuge device) appears on 427 US grants and 385 published applications in this corpus.
Search patents in F01M- Granted patents
- 427
- Published applications
- 385
- Assignees
- 168
- Inventors
- 698
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 12 | 0 |
| 2001 | 9 | 9 |
| 2002 | 8 | 12 |
| 2003 | 15 | 15 |
| 2004 | 14 | 14 |
| 2005 | 10 | 12 |
| 2006 | 13 | 12 |
| 2007 | 9 | 13 |
| 2008 | 13 | 11 |
| 2009 | 7 | 20 |
| 2010 | 15 | 8 |
| 2011 | 12 | 17 |
| 2012 | 12 | 20 |
| 2013 | 13 | 17 |
| 2014 | 21 | 6 |
| 2015 | 18 | 23 |
| 2016 | 13 | 25 |
| 2017 | 17 | 17 |
| 2018 | 18 | 28 |
| 2019 | 13 | 21 |
| 2020 | 21 | 29 |
| 2021 | 30 | 11 |
| 2022 | 20 | 15 |
| 2023 | 11 | 7 |
| 2024 | 14 | 14 |
| 2025 | 9 | 3 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for rotating coalescers maintaining positive recirculation through a dynamic seal6 Oct 2026US 12,752,228 B2Atmus Filtration IP Inc.
- Hydraulically driven de-oiler for gas turbine engines2 Jun 2026US 12,644,394 B2Rtx Corporation
- Modular centrifugal separator for cleaning gas7 Apr 2026US 12,594,561 B2Alfdex AB
- Engine crankcase ventilation system24 Mar 2026US 12,584,429 B2Grimaldi Development AB
- Centrifugal separator for cleaning gas10 Feb 2026US 12,544,772 B2Alfdex AB
- Oil separator structure for blow-by gas recirculation system, and vehicle1 Oct 2026US 2026/0295464 A1Isuzu Motors Limited
- Device for separating gas from a mixed gas flow6 Aug 2026US 2026/0225014 A1
- Internal combustion engine16 Jul 2026US 2026/0201822 A1JCB Research
- Axial flow centrifugal separator18 Jun 2026US 2026/0166459 A1Cummins Filtration IP, Inc.
- Centrifugal separator for cleaning gas30 Apr 2026US 2026/0117685 A1Alfdex AB
Most cited
By later US patents
- Free jet centrifuge rotor133US 6,530,872 B2Filterwerk Mann & Hummel GmbH · 2003
- Aerosol separator and method128US 5,853,439 ADonaldson Company, Inc. · 1998
- Aerosol separator; and method111US 6,171,355 B2Donaldson Company, Inc. · 2001
- Lubricating system for gas turbine engines and pump for such a system88US 4,714,139 AMTU Motoren- und Turbinen-Union Muenchen GmbH · 1987
- Diesel engine system with oil-air separator and method of operation83US 6,152,120 ACaterpillar Inc. · 2000