C10L 1/232
Containing nitrogen in a heterocyclic ring
Official title: containing nitrogen in a heterocyclic ring {(C10L1/221 takes precedence)}
C10L1/232 (Containing nitrogen in a heterocyclic ring) appears on 578 US grants and 357 published applications in this corpus.
Search patents in C10L- Granted patents
- 578
- Published applications
- 357
- Assignees
- 189
- Inventors
- 943
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 11 | 0 |
| 1978 | 10 | 0 |
| 1979 | 10 | 0 |
| 1980 | 12 | 0 |
| 1981 | 18 | 0 |
| 1982 | 12 | 0 |
| 1983 | 18 | 0 |
| 1984 | 4 | 0 |
| 1985 | 8 | 0 |
| 1986 | 12 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 11 | 0 |
| 1990 | 5 | 0 |
| 1991 | 9 | 0 |
| 1992 | 10 | 0 |
| 1993 | 12 | 0 |
| 1994 | 22 | 0 |
| 1995 | 15 | 0 |
| 1996 | 30 | 0 |
| 1997 | 24 | 0 |
| 1998 | 27 | 0 |
| 1999 | 27 | 0 |
| 2000 | 14 | 0 |
| 2001 | 14 | 3 |
| 2002 | 3 | 4 |
| 2003 | 6 | 12 |
| 2004 | 4 | 22 |
| 2005 | 5 | 19 |
| 2006 | 4 | 16 |
| 2007 | 6 | 15 |
| 2008 | 6 | 18 |
| 2009 | 6 | 10 |
| 2010 | 11 | 20 |
| 2011 | 6 | 13 |
| 2012 | 12 | 20 |
| 2013 | 11 | 15 |
| 2014 | 10 | 16 |
| 2015 | 14 | 22 |
| 2016 | 12 | 14 |
| 2017 | 12 | 12 |
| 2018 | 12 | 8 |
| 2019 | 13 | 21 |
| 2020 | 17 | 14 |
| 2021 | 9 | 12 |
| 2022 | 10 | 11 |
| 2023 | 7 | 10 |
| 2024 | 10 | 12 |
| 2025 | 11 | 12 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Compositions for mitigating low speed pre-ignition events28 Jul 2026US 12,692,450 B2Chevron Oronite Company LLC
- Use and method21 Jul 2026US 12,686,829 B2Innospec Limited
- Multi-functional fuel additive to provide friction reduction and corrosion protection14 Jul 2026US 12,680,041 B2Afton Chemical Corporation
- Fuel additive composition19 May 2026US 12,630,776 B2
- Gasoline additive composition for improved engine performance12 May 2026US 12,624,303 B2Afton Chemical Corporation
- Antidegradant bis(dihydro and tetrahydroquinoline) compounds and uses thereof8 Oct 2026US 2026/0308127 A1Flexsys IP Holdings, LLC
- Use and method24 Sep 2026US 2026/0286241 A1Innospec Limited
- Hydrogen Sulphide and Mercaptan Scavenging Additive Concentrate Comprising an Oxazolidine Compound and an (Ethoxylated) Phenol Compound17 Sep 2026US 2026/0275216 A1Totalenergies Onetech
- Additive composition for common rail diesel engine fuel17 Sep 2026US 2026/0275949 A1YUKA SANGYO CO., LTD. and
- Processes for producing reaction products including quaternary ammonium salts13 Aug 2026US 2026/0234299 A1The Lubrizol Corporation
Most cited
By later US patents
- Method of treating sour gas and liquid hydrocarbon160US 5,674,377 ANalco/Exxon Energy Chemicals, L. P. · 1997
- Fuel compositions of poly(oxyalkylene) aminocarbamate108US 4,191,537 AChevron Research Company · 1980
- Suppression of the evolution of hydrogen sulfide gases97US 5,074,991 APetrolite Corporation · 1991
- Method for tagging petroleum products91US 5,525,516 AEastman Chemical Company · 1996
- Oxazoline additives useful in oleaginous compositions70US 4,102,798 AExxon Research & Engineering Co. · 1978