C07C 2521/18
Carbon
C07C2521/18 (Carbon) appears on 270 US grants and 171 published applications in this corpus.
Search patents in C07C- Granted patents
- 270
- Published applications
- 171
- Assignees
- 188
- Inventors
- 715
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 10 | 0 |
| 1978 | 8 | 0 |
| 1979 | 6 | 0 |
| 1980 | 8 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 7 | 0 |
| 1985 | 6 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 9 | 0 |
| 1996 | 6 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 2 |
| 2004 | 0 | 7 |
| 2005 | 0 | 4 |
| 2006 | 2 | 1 |
| 2007 | 3 | 1 |
| 2008 | 2 | 1 |
| 2009 | 0 | 2 |
| 2010 | 4 | 4 |
| 2011 | 0 | 2 |
| 2012 | 3 | 9 |
| 2013 | 3 | 6 |
| 2014 | 4 | 13 |
| 2015 | 7 | 8 |
| 2016 | 9 | 21 |
| 2017 | 23 | 11 |
| 2018 | 9 | 10 |
| 2019 | 18 | 16 |
| 2020 | 11 | 8 |
| 2021 | 7 | 14 |
| 2022 | 11 | 9 |
| 2023 | 10 | 5 |
| 2024 | 5 | 7 |
| 2025 | 3 | 4 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Nanocomposite material comprising bio-sludge or biochar, method for its preparation and application in photocatalytic CO2 reduction26 May 2026US 12,636,639 B2United Arab Emirates University
- Generation of a population of hindbrain cells and hindbrain-like organoids from pluripotent stem cells17 Mar 2026US 12,577,530 B2The J. David Gladstone Institutes, a testamentary trust established under the Will of J. David Gladstone
- Method and system embodiments for converting ethanol to para-xylene and ortho-xylene1 Apr 2025US 12,264,116 B2Battelle Memorial Institute
- Catalyst supports—composition and process of manufacture18 Mar 2025US 12,251,686 B2
- Method for producing 1,4-dimethylnaphthalene4 Mar 2025US 12,240,805 B2Sato Planning Co., Ltd
- Methods for depolymerization of substituted vinyl polymers4 Jun 2026US 2026/0152617 A1Board of Trustees of Michigan State University
- Method for making methane from carbon dioxide5 Mar 2026US 2026/0061409 A1King Fahd University of Petroleum and Minerals
- Method for making a benzimidazole5 Mar 2026US 2026/0061410 A1King Fahd University of Petroleum and Minerals
- Nanocomposite material comprising bio-sludge or biochar, method for its preparation and application in photocatalytic co2 reduction1 Jan 2026US 2026/0001057 A1United Arab Emirates University
- Method for producing glycolaldehyde dialkyl acetal10 Jul 2025US 2025/0223252 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- Catalyst87US 7,375,049 B2Johnson Matthey PLC · 2008
- Methane production80US 3,958,957 AExxon Research & Engineering Co. · 1976
- Liquid crystalline cyclohexylphenyl derivatives74US 4,400,293 AMerck Patent GmbH · 1983
- Liquid crystalline hexahydroterphenyl derivatives67US 4,154,697 AMerck Patent Gesellschaft mit beschraenkter Haftung · 1979
- Cyclohexylbiphenyls, their preparation and use in dielectrics and electrooptical display elements58US 4,330,426 AMerck Patent GmbH · 1982