C10G 21/20
Nitrogen-containing compounds
C10G21/20 (Nitrogen-containing compounds) appears on 152 US grants and 171 published applications in this corpus.
Search patents in C10G- Granted patents
- 152
- Published applications
- 171
- Assignees
- 106
- Inventors
- 490
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 3 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 4 |
| 2008 | 0 | 0 |
| 2009 | 0 | 5 |
| 2010 | 3 | 6 |
| 2011 | 0 | 10 |
| 2012 | 3 | 6 |
| 2013 | 5 | 6 |
| 2014 | 8 | 19 |
| 2015 | 12 | 23 |
| 2016 | 9 | 7 |
| 2017 | 11 | 22 |
| 2018 | 14 | 9 |
| 2019 | 7 | 6 |
| 2020 | 11 | 8 |
| 2021 | 6 | 6 |
| 2022 | 6 | 10 |
| 2023 | 3 | 4 |
| 2024 | 3 | 8 |
| 2025 | 6 | 4 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for recycling a circular hydrocarbon from a used high performance lubricant16 Jun 2026US 12,655,364 B2ExxonMobil Technology and Engineering Company
- Method of preparing lube base oil28 Apr 2026US 12,612,565 B2SK Enmove Co., Ltd.
- Process of upgrading a pyrolysis oil and upgrading solution used therein9 Dec 2025US 12,492,347 B2Refiniti Limited
- Treating and steam cracking a combination of plastic-derived oil and used lubricating oils to produce high-value chemicals14 Oct 2025US 12,441,942 B2Sabic Global Technologies B.V.
- Method for purifying a pyrolysis oil in order to upgrade it by steam-cracking19 Aug 2025US 12,391,885 B2Totalenergies Onetech
- A process for recovery of hydrogen during hydroprocessing of a feedstock comprising oxygenates16 Apr 2026US 2026/0103643 A1Topsoe A/S
- Process of upgrading a pyrolysis oil and upgrading solution used therein5 Mar 2026US 2026/0062626 A1Refiniti Limited
- Method for extraction and analysis of polycyclic aromatic hydrocarbons in petroleum products5 Feb 2026US 2026/0035621 A1HollyFrontier LSP Brand Strategies LLC
- Process for recycling a circular hydrocarbon from a used high performance lubricant28 Aug 2025US 2025/0270468 A1ExxonMobil Technology and Engineering Company
- Refining method and device of waste plastic pyrolysis oil20 Mar 2025US 2025/0092316 A1SK Geo Centric Co., Ltd.
Most cited
By later US patents
- Composition and method for sweetening hydrocarbons161US 4,978,512 AQuaker Chemical Corporation · 1990
- Process of removing oxygenated contaminants from an olefin composition82US 6,764,602 B2ExxonMobil Chemical Patents Inc. · 2004
- Process for purifying hydrocarbonaceous oils49US 4,485,007 AEnvironmental Research & Technology, Inc. · 1984
- Process for enhancing the value of hydrocabonaceous natural recources48US 6,875,341 B1James W. Bunger and Associates, Inc. · 2005
- Removal of naphthenic acids in crude oils and distillates33US 5,961,821 AExxon Research & Engineering Co. · 1999