C10M 2215/22
Heterocyclic nitrogen compounds
C10M2215/22 (Heterocyclic nitrogen compounds) appears on 2,209 US grants and 1,236 published applications in this corpus.
Search patents in C10M- Granted patents
- 2,209
- Published applications
- 1,236
- Assignees
- 591
- Inventors
- 3,390
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 71 | 0 |
| 1977 | 58 | 0 |
| 1978 | 88 | 0 |
| 1979 | 68 | 0 |
| 1980 | 55 | 0 |
| 1981 | 58 | 0 |
| 1982 | 53 | 0 |
| 1983 | 53 | 0 |
| 1984 | 30 | 0 |
| 1985 | 35 | 0 |
| 1986 | 29 | 0 |
| 1987 | 37 | 0 |
| 1988 | 34 | 0 |
| 1989 | 66 | 0 |
| 1990 | 50 | 0 |
| 1991 | 49 | 0 |
| 1992 | 54 | 0 |
| 1993 | 56 | 0 |
| 1994 | 77 | 0 |
| 1995 | 46 | 0 |
| 1996 | 72 | 0 |
| 1997 | 61 | 0 |
| 1998 | 91 | 0 |
| 1999 | 51 | 0 |
| 2000 | 37 | 0 |
| 2001 | 48 | 9 |
| 2002 | 35 | 28 |
| 2003 | 38 | 43 |
| 2004 | 20 | 41 |
| 2005 | 21 | 40 |
| 2006 | 8 | 42 |
| 2007 | 13 | 51 |
| 2008 | 13 | 50 |
| 2009 | 16 | 66 |
| 2010 | 35 | 80 |
| 2011 | 29 | 62 |
| 2012 | 45 | 72 |
| 2013 | 48 | 63 |
| 2014 | 47 | 78 |
| 2015 | 58 | 67 |
| 2016 | 50 | 61 |
| 2017 | 53 | 74 |
| 2018 | 36 | 63 |
| 2019 | 36 | 52 |
| 2020 | 35 | 33 |
| 2021 | 35 | 37 |
| 2022 | 34 | 24 |
| 2023 | 24 | 27 |
| 2024 | 18 | 25 |
| 2025 | 22 | 31 |
| 2026 | 13 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C10M 2215/221Six-membered rings containing nitrogen and carbon onlyIndexing code1,488
- C10M 2215/225The rings containing both nitrogen and oxygenIndexing code1,412
- C10M 2215/223Five-membered rings containing nitrogen and carbon onlyIndexing code1,030
- C10M 2215/2206Used as thickening agentsIndexing code78
- C10M 2215/2203Used as base materialIndexing code34
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
- Multipurpose oxypyridinones and their functional use—121 Apr 2026US 12,606,765 B2Infineum International Limited
- Multipurpose oxypyridinones and their functional use-421 Apr 2026US 12,606,766 B2Infineum International Limited
- Antidegradant bis(dihydro and tetrahydroquinoline) compounds and uses thereof8 Oct 2026US 2026/0308127 A1Flexsys IP Holdings, LLC
- Polyamide resin composition8 Oct 2026US 2026/0308472 A1Ube Corporation
- 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
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
- Polybutyl-and polyisobutylamines, their preparation, and fuel compositions containing these135US 4,832,702 ABASF SE · 1989
- Thread sealant and anti-seize compound130US 5,093,015 AJet-Lube, Inc. · 1992
- Oil-soluble phosphorus antiwear additives for lubricants118US 4,857,214 AEthylk Petroleum Additives, Inc. · 1989