C10M 133/44
Five-membered ring containing nitrogen and carbon only
C10M133/44 (Five-membered ring containing nitrogen and carbon only) appears on 487 US grants and 281 published applications in this corpus.
Search patents in C10M- Granted patents
- 487
- Published applications
- 281
- Assignees
- 168
- Inventors
- 947
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 7 | 0 |
| 1979 | 15 | 0 |
| 1980 | 9 | 0 |
| 1981 | 10 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 11 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 13 | 0 |
| 1990 | 5 | 0 |
| 1991 | 10 | 0 |
| 1992 | 15 | 0 |
| 1993 | 6 | 0 |
| 1994 | 29 | 0 |
| 1995 | 14 | 0 |
| 1996 | 33 | 0 |
| 1997 | 12 | 0 |
| 1998 | 32 | 0 |
| 1999 | 13 | 0 |
| 2000 | 15 | 0 |
| 2001 | 18 | 2 |
| 2002 | 12 | 5 |
| 2003 | 9 | 4 |
| 2004 | 4 | 4 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 3 |
| 2008 | 0 | 5 |
| 2009 | 1 | 4 |
| 2010 | 3 | 10 |
| 2011 | 0 | 7 |
| 2012 | 4 | 13 |
| 2013 | 5 | 13 |
| 2014 | 14 | 28 |
| 2015 | 6 | 19 |
| 2016 | 18 | 26 |
| 2017 | 18 | 24 |
| 2018 | 8 | 21 |
| 2019 | 14 | 23 |
| 2020 | 15 | 13 |
| 2021 | 10 | 11 |
| 2022 | 12 | 12 |
| 2023 | 12 | 10 |
| 2024 | 8 | 6 |
| 2025 | 5 | 7 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Compound, corrosion inhibitor, and lubricant composition15 Sep 2026US 12,735,393 B2Idemitsu Kosan Co., Ltd.
- Hydrolytically stable hydraulic lubricant26 May 2026US 12,637,632 B2Afton Chemical Corporation
- 1,4-benzoxazine compounds and lubricant compositions containing the same21 Apr 2026US 12,606,767 B2The Lubrizol Corporation
- Antioxidants with high mono-alkylated diphenylamine content21 Apr 2026US 12,606,769 B2Chevron Oronite Company LLC
- Lubricating oil composition, diesel engine with mounted supercharger, and use method for lubricating oil composition10 Mar 2026US 12,570,921 B2Idemitsu Kosan Co., Ltd.
- Gear oil composition10 Sep 2026US 2026/0265634 A1Eneos Corporation
- Grease composition10 Sep 2026US 2026/0265636 A1Adeka Corporation
- Lubricant Compositions27 Aug 2026US 2026/0250593 A1The Lubrizol Corporation
- Lubricant composition for automotive transmissions13 Aug 2026US 2026/0234488 A1Totalenergies Onetech
- Lubricant for use with chlorine-containing refrigerants in compressor applications13 Aug 2026US 2026/0234499 A1The Lubrizol Corporation
Most cited
By later US patents
- Thread sealant and anti-seize compound130US 5,093,015 AJet-Lube, Inc. · 1992
- High performance lubricating oils102US 6,180,575 B2Mobil Oil Corporation · 2001
- Lubricating oil for refrigerator75US 5,185,092 ATonen Corporation · 1993
- High oleic polyol esters, compositions and lubricants, functional fluids and greases containing the same73US 5,773,391 AThe Lubrizol Corporation · 1998
- Alkyl ether amine conveyor lubricants containing corrosion inhibitors64US 5,723,418 AEcolab Inc. · 1998