C10M 175/0058
Working-up used lubricants to recover useful products: by filtration and centrifugation processes
Official title: {by filtration and centrifugation processes; apparatus therefor}
C10M175/0058 (Working-up used lubricants to recover useful products: by filtration and centrifugation processes) appears on 94 US grants and 107 published applications in this corpus.
Search patents in C10M- Granted patents
- 94
- Published applications
- 107
- Assignees
- 90
- Inventors
- 242
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
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| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
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| 2002 | 2 | 2 |
| 2003 | 3 | 3 |
| 2004 | 0 | 5 |
| 2005 | 1 | 6 |
| 2006 | 1 | 8 |
| 2007 | 4 | 3 |
| 2008 | 6 | 9 |
| 2009 | 3 | 2 |
| 2010 | 1 | 9 |
| 2011 | 1 | 7 |
| 2012 | 2 | 4 |
| 2013 | 3 | 6 |
| 2014 | 5 | 5 |
| 2015 | 2 | 5 |
| 2016 | 1 | 4 |
| 2017 | 3 | 3 |
| 2018 | 0 | 3 |
| 2019 | 4 | 0 |
| 2020 | 2 | 6 |
| 2021 | 6 | 2 |
| 2022 | 0 | 1 |
| 2023 | 1 | 5 |
| 2024 | 2 | 3 |
| 2025 | 4 | 5 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of producing lube base oil and lube base oil produced thereby21 Apr 2026US 12,606,755 B2SK Enmove Co., Ltd.
- Lube base oil manufacturing process utilizing refined oil fraction of waste lubricant, and lube base oil manufactured thereby23 Sep 2025US 12,421,462 B2SK Enmove Co., Ltd.
- Liquid composition for purification of oil29 Jul 2025US 12,370,477 B2Skf Recondoil AB
- Method for hydrotreating and recycling waste lubricating oil8 Apr 2025US 12,270,008 B2China University of Petroleum (East China)
- Enhancement of the byproducts of a regeneration process of exhaust oils1 Apr 2025US 12,264,285 B2ITELYUM REGENERATION S.p.A.
- Method for recycling cold-rolled oil sludge23 Apr 2026US 2026/0109912 A1
- Method for producing recycled lubricating base oil from waste lubricating oil and recycled lubricating base oil produced thereby28 Aug 2025US 2025/0270467 A1SK Enmove Co., Ltd.
- Lubricating oil purification system and lubricating oil purification method31 Jul 2025US 2025/0243425 A1Mitsubishi Kakoki Kaisha, Ltd.
- Integrated plant for the recovery and regeneration of used industrial and transportation oils29 May 2025US 2025/0171706 A1
- Lube base oil manufacturing process utilizing refined oil fraction of waste lubricant, and lube base oil manufactured thereby23 Jan 2025US 2025/0026992 A1SK Enmove Co., Ltd.
Most cited
By later US patents
- Method for rejuvenating lubricating oils113US 5,069,799 AExxon Research & Engineering Co. · 1991
- Multi-stage fluid filter, and methods of making and using same112US 6,379,564 B12002
- Method for removing polynuclear aromatics from used lubricating oils111US 5,225,081 AExxon Research & Engineering Co. · 1993
- Staged oil filter incorporating timed release oil conditioner81US 6,623,636 B2Honeywell International Inc. · 2003
- Filter cartridge with series elements for chemical and mechanical filtration34US 4,886,599 ALeybold Aktiengesellschaft · 1989