C10L 1/221
Compounds of uncertain formula
Official title: {compounds of uncertain formula; reaction products where mixtures of compounds are obtained}
C10L1/221 (Compounds of uncertain formula) appears on 592 US grants and 290 published applications in this corpus.
Search patents in C10L- Granted patents
- 592
- Published applications
- 290
- Assignees
- 102
- Inventors
- 684
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 12 | 0 |
| 1978 | 23 | 0 |
| 1979 | 14 | 0 |
| 1980 | 18 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 10 | 0 |
| 1986 | 8 | 0 |
| 1987 | 9 | 0 |
| 1988 | 1 | 0 |
| 1989 | 17 | 0 |
| 1990 | 20 | 0 |
| 1991 | 23 | 0 |
| 1992 | 15 | 0 |
| 1993 | 34 | 0 |
| 1994 | 28 | 0 |
| 1995 | 23 | 0 |
| 1996 | 20 | 0 |
| 1997 | 25 | 0 |
| 1998 | 26 | 0 |
| 1999 | 19 | 0 |
| 2000 | 18 | 0 |
| 2001 | 19 | 4 |
| 2002 | 5 | 8 |
| 2003 | 8 | 6 |
| 2004 | 8 | 23 |
| 2005 | 5 | 37 |
| 2006 | 1 | 16 |
| 2007 | 3 | 12 |
| 2008 | 10 | 26 |
| 2009 | 7 | 13 |
| 2010 | 12 | 19 |
| 2011 | 16 | 7 |
| 2012 | 3 | 12 |
| 2013 | 11 | 21 |
| 2014 | 12 | 10 |
| 2015 | 14 | 13 |
| 2016 | 16 | 10 |
| 2017 | 7 | 11 |
| 2018 | 7 | 8 |
| 2019 | 11 | 5 |
| 2020 | 5 | 7 |
| 2021 | 2 | 5 |
| 2022 | 2 | 1 |
| 2023 | 3 | 3 |
| 2024 | 3 | 8 |
| 2025 | 4 | 5 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Mixtures for improving the stability of additive packages22 Sep 2026US 12,742,128 B2BASF SE
- Fuel composition comprising detergent and quaternary ammonium salt additive10 Mar 2026US 12,570,914 B2Innospec Limited
- Gasoline additive composition for improved engine performance28 Oct 2025US 12,454,653 B2Afton Chemical Corporation
- High protein organic materials as fuel and processes for making the same5 Aug 2025US 12,378,492 B2Akbev Group, LLC
- Synthetic lubricity additives for hydrocarbon fuels4 Mar 2025US 12,241,034 B2Ecolab USA Inc.
- Use and method23 Oct 2025US 2025/0326978 A1Innospec Limited
- Use and method4 Sep 2025US 2025/0277156 A1Innospec Limited
- Use and method28 Aug 2025US 2025/0270463 A1Innospec Limited
- Gasoline additive composition for improved engine performance12 Jun 2025US 2025/0188377 A1Afton Chemical Corporation
- Fuel additives for reducing low speed pre-ignition events27 Mar 2025US 2025/0101333 A1Chevron Oronite Company LLC
Most cited
By later US patents
- Novel carboxylic acid acylating agents, derivatives thereof, concentrate and lubricant compositions containing the same, and processes for their preparation764US 4,234,435 AThe Lubrizol Corporation · 1980
- Polyolefinic copolymer additives for lubricants and fuels123US 4,160,739 ARohm and Haas Company · 1979
- Ashless dispersants formed from substituted acylating agents and their production and use115US 5,241,003 AEthyl Petroleum Additives, Inc. · 1993
- Polymeric dispersants having alternating polyalkylene and succinic groups111US 5,112,507 AChevron Research and Technology Company · 1992
- Dispersant compositions108US 3,948,800 AThe Lubrizol Corporation · 1976