C10L 1/228
Containing at least one carbon-to-nitrogen double bond
Official title: containing at least one carbon-to-nitrogen double bond, e.g. guanidines, hydrazones, semicarbazones, imines; containing at least one carbon-to-nitrogen triple bond, e.g. nitriles {(C10L1/221, C10L1/226 take precedence)}
C10L1/228 (Containing at least one carbon-to-nitrogen double bond) appears on 137 US grants and 106 published applications in this corpus.
Search patents in C10L- Granted patents
- 137
- Published applications
- 106
- Assignees
- 81
- Inventors
- 287
- Latest grant
- 17 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 10 | 0 |
| 1997 | 4 | 0 |
| 1998 | 9 | 0 |
| 1999 | 10 | 0 |
| 2000 | 6 | 0 |
| 2001 | 1 | 2 |
| 2002 | 0 | 2 |
| 2003 | 6 | 5 |
| 2004 | 1 | 16 |
| 2005 | 3 | 6 |
| 2006 | 1 | 1 |
| 2007 | 2 | 4 |
| 2008 | 2 | 8 |
| 2009 | 1 | 2 |
| 2010 | 0 | 5 |
| 2011 | 3 | 5 |
| 2012 | 2 | 7 |
| 2013 | 4 | 6 |
| 2014 | 5 | 9 |
| 2015 | 7 | 4 |
| 2016 | 7 | 3 |
| 2017 | 4 | 0 |
| 2018 | 4 | 3 |
| 2019 | 1 | 2 |
| 2020 | 1 | 2 |
| 2021 | 1 | 3 |
| 2022 | 1 | 4 |
| 2023 | 1 | 1 |
| 2024 | 3 | 1 |
| 2025 | 0 | 3 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Methods of identifying a hydrocarbon fuel17 Dec 2024US 12,169,192 B2Afton Chemical Corporation
- Fuel stabilizer17 Sep 2024US 12,091,624 B2Happyfuel, LLC
- Homogenous catalytic composition for improving LPG combustion16 Jul 2024US 12,037,554 B2Hindustan Petroleum Corporation Limited
- Composition for removing sulfur-containing compounds24 Oct 2023US 11,795,404 B2Kuraray Co., Ltd.
- Methods to reduce frequency of diesel particulate filter regeneration26 Apr 2022US 11,312,915 B2Afton Chemical Corporation
- Fuel additive compositions and methods for controlling deposits24 Sep 2026US 2026/0286239 A1Chevron Oronite Company LLC
- Fuel additive compositions and methods for controlling carbon deposits in an internal combustion engines17 Sep 2026US 2026/0275215 A1Chevron Oronite Company LLC
- Particulate reduction in gdi engines using mannich detergents11 Dec 2025US 2025/0376632 A1Afton Chemical Corporation
- Use and method21 Aug 2025US 2025/0263615 A1Innospec Limited
- Use and method6 Feb 2025US 2025/0043204 A1Innospec Limited
Most cited
By later US patents
- Suppression of the evolution of hydrogen sulfide gases from crude oil, petroleum residua and fuels90US 5,169,411 APetrolite Corporation · 1992
- Methods for reducing harmful emissions from a diesel engine61US 6,003,303 AClean Diesel Technologies, Inc. · 1999
- Anilines as markers for mineral oils59US 5,627,077 ABASF SE · 1997
- Operation of diesel engines with reduced particulate emission by utilization of platinum group metal fuel additive and pass-through catalytic oxidizer57US 5,501,714 APlatinum Plus, Inc. · 1996
- Method for reducing emissions of NO.sub.x and particulates from a diesel engine55US 6,051,040 AClean Diesel Technologies, Inc. · 2000