C10L
Fuels not otherwise provided for
Official title: Fuels not otherwise provided for; natural gas; synthetic natural gas obtained by processes not covered by subclasses c10g or c10k; liquified petroleum gas; use of additives to fuels or fires; fire-lighters
C10L (Fuels not otherwise provided for) appears on 13,671 US grants and 12,624 published applications in this corpus.
Search patents in C10L- Granted patents
- 13,671
- Published applications
- 12,624
- Assignees
- 4,413
- Inventors
- 22,959
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 159 | 0 |
| 1977 | 211 | 0 |
| 1978 | 212 | 0 |
| 1979 | 182 | 0 |
| 1980 | 221 | 0 |
| 1981 | 277 | 0 |
| 1982 | 169 | 0 |
| 1983 | 224 | 0 |
| 1984 | 197 | 0 |
| 1985 | 269 | 0 |
| 1986 | 197 | 0 |
| 1987 | 209 | 0 |
| 1988 | 197 | 0 |
| 1989 | 231 | 0 |
| 1990 | 179 | 0 |
| 1991 | 189 | 0 |
| 1992 | 180 | 0 |
| 1993 | 208 | 0 |
| 1994 | 192 | 0 |
| 1995 | 159 | 0 |
| 1996 | 205 | 0 |
| 1997 | 173 | 0 |
| 1998 | 228 | 0 |
| 1999 | 205 | 0 |
| 2000 | 224 | 0 |
| 2001 | 215 | 56 |
| 2002 | 148 | 189 |
| 2003 | 171 | 260 |
| 2004 | 129 | 298 |
| 2005 | 95 | 321 |
| 2006 | 92 | 319 |
| 2007 | 116 | 323 |
| 2008 | 157 | 440 |
| 2009 | 166 | 539 |
| 2010 | 226 | 674 |
| 2011 | 287 | 691 |
| 2012 | 368 | 693 |
| 2013 | 502 | 731 |
| 2014 | 539 | 781 |
| 2015 | 549 | 831 |
| 2016 | 566 | 730 |
| 2017 | 560 | 630 |
| 2018 | 539 | 582 |
| 2019 | 516 | 512 |
| 2020 | 507 | 509 |
| 2021 | 429 | 489 |
| 2022 | 391 | 485 |
| 2023 | 343 | 432 |
| 2024 | 407 | 459 |
| 2025 | 330 | 403 |
| 2026 | 226 | 247 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- C10L 1/00Liquid carbonaceous fuels8,516
- C10L 10/00Use of additives to fuels or fires for particular purposes2,805
- C10L 2290/00Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process stepsIndexing code2,721
- C10L 3/00Gaseous fuels2,588
- C10L 2200/00Components of fuel compositionsIndexing code2,229
- C10L 5/00Solid fuels1,851
- C10L 9/00Treating solid fuels to improve their combustion1,433
- C10L 2270/00Specifically adapted fuelsIndexing code1,408
All 14 main groupsShow fewer
- C10L 2230/00Function and purpose of a components of a fuel or the compositionIndexing code680
- C10L 2250/00Structural features of fuel components or fuel compositions, either in solid, liquidIndexing code354
- C10L 11/00Fire-lighters230
- C10L 2300/00Mixture of two or more additives covered by the same group ofIndexing code139
- C10L 7/00Fuels produced by solidifying fluid fuels101
- C10L 8/00Fuels not provided for in other groups of this subclass19
Recent patents
- Coal water slurry concentration device6 Oct 2026US 12,752,280 B2Anhui University of Science and Technology
- Autonomous modular flare gas conversion systems and methods6 Oct 2026US 12,753,138 B2M2X Energy Inc.
- Processing renewable lipid feedstocks comprising fatty acid glycerol esters6 Oct 2026US 12,753,357 B1Chevron U.S.A.Inc.
- Process for obtaining alkylation gasoline through the use of refinery blends and organic acids6 Oct 2026US 12,753,358 B2Instituto Mexicano Del Petroleo
- Water-resistant and durable biocarbon pellets, and methods for making and using the same6 Oct 2026US 12,753,359 B2Carbon Technology Holdings, LLC
- Process and plant for producing synthetic paraffinic kerosene as jet fuel8 Oct 2026US 2026/0308082 A1Topsoe A/S
- Autonomous Modular Flare Gas Conversion Systems and Methods8 Oct 2026US 2026/0308093 A1M2X Energy Inc.
- Antidegradant bis(dihydro and tetrahydroquinoline) compounds and uses thereof8 Oct 2026US 2026/0308127 A1Flexsys IP Holdings, LLC
- Converting a lipid feedstock to jet fuel8 Oct 2026US 2026/0308467 A1Chevron U.S.A.Inc.
- Method for Producing of a Fuel Additive8 Oct 2026US 2026/0308468 A1
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
- Process for recovery of hydrocarbons and rejection of sand350US 5,316,664 ACanadian Occidental Petroleum Ltd. · 1994
- Process for recovery of hydrocarbons and rejection of sand346US 5,340,467 ACanadian Occidental Petroleum Ltd. · 1994
- Preparation of low-viscosity improved stable crude oil transport emulsions296US 4,983,319 ACanadian Occidental Petroleum Ltd. · 1991
- Process for preparing methane rich gases294US 4,130,575 AHaldor Topsoe A/S · 1978