C10L 1/1855
Cyclic ethers
Official title: {Cyclic ethers, e.g. epoxides, lactides, lactones}
C10L1/1855 (Cyclic ethers) appears on 138 US grants and 133 published applications in this corpus.
Search patents in C10L- Granted patents
- 138
- Published applications
- 133
- Assignees
- 90
- Inventors
- 323
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 7 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 7 | 0 |
| 2001 | 4 | 1 |
| 2002 | 2 | 6 |
| 2003 | 2 | 5 |
| 2004 | 3 | 6 |
| 2005 | 1 | 8 |
| 2006 | 0 | 3 |
| 2007 | 3 | 8 |
| 2008 | 2 | 7 |
| 2009 | 0 | 3 |
| 2010 | 3 | 7 |
| 2011 | 5 | 13 |
| 2012 | 4 | 10 |
| 2013 | 10 | 8 |
| 2014 | 5 | 3 |
| 2015 | 8 | 13 |
| 2016 | 6 | 4 |
| 2017 | 7 | 3 |
| 2018 | 2 | 4 |
| 2019 | 0 | 1 |
| 2020 | 4 | 3 |
| 2021 | 3 | 4 |
| 2022 | 2 | 2 |
| 2023 | 2 | 2 |
| 2024 | 4 | 5 |
| 2025 | 1 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fuel additive composition19 May 2026US 12,630,776 B2
- Method for reduction of abnormal combustion events13 Jan 2026US 12,522,779 B2Infineum International Limited
- Polyethyleneamine salts of sulphonyl oleic acid and dual functional hydrocarbon fuel additive composition thereof15 Jul 2025US 12,359,141 B2Hindustan Petroleum Corporation Limited
- Methods of identifying a hydrocarbon fuel17 Dec 2024US 12,169,192 B2Afton Chemical Corporation
- Composition comprising heavy petroleum oil15 Oct 2024US 12,116,539 B2Vertoro B.V.
- Sustainable 2-Alkyltetrahydrofuran Fuels for Compression Ignition Engines21 May 2026US 2026/0139195 A1The United States of America as represented by the Secretary of the Navy
- Emulsion5 Mar 2026US 2026/0062633 A1Quadrise International Limited
- Wax treatment and method of use15 May 2025US 2025/0154424 A1Independence Oilfield Chemicals LLC
- Energetic formulations containing epoxy-modified graphene oxide10 Apr 2025US 2025/0115532 A1Powder Fuels Ltd
- Fuel additive composition19 Dec 2024US 2024/0417636 A1
Most cited
By later US patents
- Diesel fuel additives and diesel fuels containing soluble platinum group metal compounds and use in diesel engines85US 4,892,562 AFuel Tech, Inc. · 1990
- Gasoline additives and gasoline containing soluble platinum group metal compounds and use in internal combustion engines79US 4,891,050 AFuel Tech, Inc. · 1990
- Methods for reducing harmful emissions from a diesel engine61US 6,003,303 AClean Diesel Technologies, Inc. · 1999
- 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
- Reduction of nitrogen oxides emissions from vehicular diesel engines56US 5,584,894 APlatinum Plus, Inc. · 1996