C10M 175/0025
Working-up used lubricants to recover useful products: by thermal processes
Official title: {by thermal processes}
C10M175/0025 (Working-up used lubricants to recover useful products: by thermal processes) appears on 128 US grants and 84 published applications in this corpus.
Search patents in C10M- Granted patents
- 128
- Published applications
- 84
- Assignees
- 96
- Inventors
- 272
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 3 |
| 2002 | 6 | 1 |
| 2003 | 1 | 0 |
| 2004 | 3 | 2 |
| 2005 | 2 | 2 |
| 2006 | 1 | 0 |
| 2007 | 5 | 4 |
| 2008 | 1 | 2 |
| 2009 | 2 | 1 |
| 2010 | 2 | 1 |
| 2011 | 0 | 5 |
| 2012 | 0 | 8 |
| 2013 | 2 | 4 |
| 2014 | 2 | 1 |
| 2015 | 4 | 4 |
| 2016 | 1 | 2 |
| 2017 | 1 | 2 |
| 2018 | 1 | 7 |
| 2019 | 9 | 5 |
| 2020 | 1 | 6 |
| 2021 | 5 | 2 |
| 2022 | 1 | 3 |
| 2023 | 2 | 6 |
| 2024 | 4 | 3 |
| 2025 | 6 | 7 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of producing lube base oil and lube base oil produced thereby21 Apr 2026US 12,606,755 B2SK Enmove Co., Ltd.
- Membrane separation of used oil and compositions generated3 Feb 2026US 12,540,290 B2ExxonMobil Technology and Engineering Company
- Bio-lubricant compositions and methods thereof21 Oct 2025US 12,448,580 B2Auburn University
- 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.
- Method for hydrotreating and recycling waste lubricating oil8 Apr 2025US 12,270,008 B2China University of Petroleum (East China)
- Catalytic depolymerisation of polymeric materials10 Sep 2026US 2026/0265630 A1GreenMantra Recycling Technologies Ltd.
- Use of re-refined base oil25 Jun 2026US 2026/0176543 A1Shell USA, Inc.
- Method for recycling cold-rolled oil sludge23 Apr 2026US 2026/0109912 A1
- Membrane separation of used oil and compositions generated16 Oct 2025US 2025/0320427 A1ExxonMobil Technology and Engineering Company
- 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.
Most cited
By later US patents
- Catalyst for the hydrogenation of hydrocarbon material85US 5,166,118 AVeba Oel Technologie GmbH · 1992
- Rerefining of used motor oils76US 4,101,414 AUnitech Chemical Inc. · 1978
- Process for the hydrogenation of heavy and residual oils60US 4,851,107 AIntevep, S. A. · 1989
- Process for the hydrogenative conversion of heavy oils and residual oils, used oils and waste oils, mixed with sewage sludge56US 5,064,523 AVeba Oel Technologie GmbH · 1991
- Used lubricating oil reclaiming41US 5,306,419 ATexaco Inc. · 1994