C10M 2215/223
Five-membered rings containing nitrogen and carbon only
C10M2215/223 (Five-membered rings containing nitrogen and carbon only) appears on 1,030 US grants and 899 published applications in this corpus.
Search patents in C10M- Granted patents
- 1,030
- Published applications
- 899
- Assignees
- 380
- Inventors
- 2,033
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 13 | 0 |
| 1978 | 30 | 0 |
| 1979 | 28 | 0 |
| 1980 | 18 | 0 |
| 1981 | 11 | 0 |
| 1982 | 10 | 0 |
| 1983 | 18 | 0 |
| 1984 | 13 | 0 |
| 1985 | 15 | 0 |
| 1986 | 8 | 0 |
| 1987 | 9 | 0 |
| 1988 | 9 | 0 |
| 1989 | 14 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 16 | 0 |
| 1993 | 16 | 0 |
| 1994 | 30 | 0 |
| 1995 | 21 | 0 |
| 1996 | 35 | 0 |
| 1997 | 29 | 0 |
| 1998 | 39 | 0 |
| 1999 | 22 | 0 |
| 2000 | 21 | 0 |
| 2001 | 24 | 4 |
| 2002 | 15 | 12 |
| 2003 | 24 | 28 |
| 2004 | 12 | 24 |
| 2005 | 11 | 26 |
| 2006 | 6 | 30 |
| 2007 | 12 | 40 |
| 2008 | 6 | 37 |
| 2009 | 11 | 43 |
| 2010 | 24 | 57 |
| 2011 | 17 | 47 |
| 2012 | 32 | 61 |
| 2013 | 35 | 50 |
| 2014 | 40 | 55 |
| 2015 | 43 | 49 |
| 2016 | 35 | 46 |
| 2017 | 41 | 59 |
| 2018 | 23 | 45 |
| 2019 | 26 | 45 |
| 2020 | 28 | 24 |
| 2021 | 24 | 29 |
| 2022 | 27 | 18 |
| 2023 | 17 | 20 |
| 2024 | 12 | 15 |
| 2025 | 14 | 20 |
| 2026 | 7 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Anti-stiction ionic lubricants in MEMS devices11 Aug 2026US 12,703,834 B1Texas Instruments Incorporated
- Hydrolytically stable hydraulic lubricant26 May 2026US 12,637,632 B2Afton Chemical Corporation
- Detergent-free and low-ash lubricating composition19 May 2026US 12,630,778 B2Afton Chemical Corporation
- Antioxidants with high mono-alkylated diphenylamine content21 Apr 2026US 12,606,769 B2Chevron Oronite Company LLC
- Base oil and lubricating fluid composition containing said base oil17 Mar 2026US 12,577,491 B2Fuchs SE
- Grease composition10 Sep 2026US 2026/0265636 A1Adeka 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
- Extreme pressure anti-wear additive, and preparation method thereof and use thereof in lubricating oil9 Jul 2026US 2026/0193559 A1Lanzhou Institute of Chemical Physics, CAS
- Lubricant composition for automotive transmissions18 Jun 2026US 2026/0167888 A1Totalenergies Onetech
Most cited
By later US patents
- Refrigerator oil, compressor oil composition, hydraulic fluid composition, metalworking fluid composition, heat treatment oil composition, lubricant composition for machine tool and lubricant composition779US 8,193,129 B2Nippon Oil Co., Ltd. · 2012
- Lubricating composition228US 4,956,122 AUniroyal Chemical Company, Inc. · 1990
- Thread sealant and anti-seize compound130US 5,093,015 AJet-Lube, Inc. · 1992
- Stabilized imide graft of ethylene copolymeric additives for lubricants117US 4,137,185 AExxon Research & Engineering Co. · 1979
- Lubricants for refrigeration compressors105US 4,851,144 AThe Dow Chemical Company · 1989