C10M 2223/04
Phosphate esters
C10M2223/04 (Phosphate esters) appears on 3,969 US grants and 2,632 published applications in this corpus.
Search patents in C10M- Granted patents
- 3,969
- Published applications
- 2,632
- Assignees
- 775
- Inventors
- 5,183
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 118 | 0 |
| 1977 | 98 | 0 |
| 1978 | 154 | 0 |
| 1979 | 121 | 0 |
| 1980 | 105 | 0 |
| 1981 | 87 | 0 |
| 1982 | 58 | 0 |
| 1983 | 68 | 0 |
| 1984 | 62 | 0 |
| 1985 | 67 | 0 |
| 1986 | 51 | 0 |
| 1987 | 62 | 0 |
| 1988 | 72 | 0 |
| 1989 | 96 | 0 |
| 1990 | 97 | 0 |
| 1991 | 79 | 0 |
| 1992 | 77 | 0 |
| 1993 | 85 | 0 |
| 1994 | 102 | 0 |
| 1995 | 69 | 0 |
| 1996 | 92 | 0 |
| 1997 | 82 | 0 |
| 1998 | 117 | 0 |
| 1999 | 101 | 0 |
| 2000 | 68 | 0 |
| 2001 | 85 | 14 |
| 2002 | 63 | 71 |
| 2003 | 87 | 95 |
| 2004 | 59 | 93 |
| 2005 | 36 | 80 |
| 2006 | 19 | 90 |
| 2007 | 21 | 101 |
| 2008 | 34 | 119 |
| 2009 | 40 | 110 |
| 2010 | 71 | 145 |
| 2011 | 84 | 126 |
| 2012 | 89 | 143 |
| 2013 | 89 | 124 |
| 2014 | 95 | 122 |
| 2015 | 99 | 137 |
| 2016 | 97 | 126 |
| 2017 | 85 | 132 |
| 2018 | 87 | 131 |
| 2019 | 82 | 144 |
| 2020 | 78 | 93 |
| 2021 | 76 | 88 |
| 2022 | 87 | 79 |
| 2023 | 66 | 85 |
| 2024 | 50 | 67 |
| 2025 | 63 | 71 |
| 2026 | 39 | 46 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C10M 2223/045Metal containing thio derivativesIndexing code2,416
- C10M 2223/042Metal salts thereofIndexing code1,263
- C10M 2223/041Triaryl phosphatesIndexing code1,064
- C10M 2223/047Thioderivatives not containing metallic elementsIndexing code751
- C10M 2223/043Ammonium or amine salts thereofIndexing code644
- C10M 2223/0405Used as base materialIndexing code144
Recent patents
- Lubricant compositions for reduced pre-ignition in hydrogen fueled engines29 Sep 2026US 12,747,407 B2Infineum International Limited
- Grease composition22 Sep 2026US 12,742,129 B2Kyodo Yushi Co., Ltd.
- Lubricant compositions containing magnesium detergent for reduced pre-ignition in hydrogen fueled engines15 Sep 2026US 12,735,654 B2Infineum International Limited
- Refrigerator oil composition and refrigerator mixture composition21 Jul 2026US 12,686,833 B2Idemitsu Kosan Co., Ltd.
- Multipurpose oxypyridinones and their functional use-37 Jul 2026US 12,674,113 B2Infineum International Limited
- Lubricating compositions8 Oct 2026US 2026/0308473 A1Tribodyn, Inc.
- Lubricating oil composition8 Oct 2026US 2026/0308474 A1Eneos Corporation
- Friction modifier for automatic transmission fluid24 Sep 2026US 2026/0286243 A1Chevron Oronite Company LLC
- Use of molybdenum compounds in driveline lubricants for reduced friction and copper corrosion24 Sep 2026US 2026/0286245 A1Afton Chemical Corporation
- Grease composition17 Sep 2026US 2026/0275219 A1Idemitsu Kosan Co., Ltd.
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
- Video device synchronization system190US 4,532,547 AAmpex Corporation · 1985
- Ethylene copolymer viscosity index improver-dispersant additive useful in oil compositions124US 4,517,104 AExxon Research & Engineering Co. · 1985
- Polyolefinic copolymer additives for lubricants and fuels123US 4,160,739 ARohm and Haas Company · 1979