C07C 2/50
Diels-alder conversion
Official title: Diels-Alder conversion
C07C2/50 (Diels-alder conversion) appears on 94 US grants and 54 published applications in this corpus.
Search patents in C07C- Granted patents
- 94
- Published applications
- 54
- Assignees
- 60
- Inventors
- 201
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 5 |
| 2015 | 4 | 4 |
| 2016 | 3 | 1 |
| 2017 | 4 | 7 |
| 2018 | 11 | 1 |
| 2019 | 4 | 4 |
| 2020 | 2 | 1 |
| 2021 | 4 | 2 |
| 2022 | 2 | 4 |
| 2023 | 1 | 2 |
| 2024 | 3 | 6 |
| 2025 | 3 | 1 |
| 2026 | 2 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Processes for synthesizing paraxylene and catalyst for same9 Jun 2026US 12,649,703 B2Uop LLC
- Method for preparing p-xylene by biomass conversion21 Apr 2026US 12,606,502 B2China Petroleum & Chemical Corporation
- Processes and systems for producing desulfurized alpha olefins5 Aug 2025US 12,378,483 B2Saudi Arabian Oil Company
- Preparation process of 5-ethylidene-2-norbornene13 May 2025US 12,297,159 B2Korea Kumho Petrochemical Co., Ltd.
- Molecular sieves mediated unsaturated hydrocarbon separation and related compositions, materials, methods and systems14 Jan 2025US 12,195,426 B2California Institute of Technology
- Process synthesizing sustainable aviation fuel compositions2 Apr 2026US 2026/0092023 A1Visolis, Inc.
- Process for synthesizing polymer compositions from starting materials comprising a double bond2 Apr 2026US 2026/0092130 A1Visolis, Inc.
- Compositions for fuel blending made by a sustainable process, and sustainable fuel compositions therefrom2 Apr 2026US 2026/0092228 A1Visolis, Inc.
- High energy density rocket fuel compositions26 Feb 2026US 2026/0055330 A1Visolis, Inc.
- Cyclic diene-containing composition, production method for aldehyde, production method for alcohol, and production method for cyclic diene-containing composition5 Feb 2026US 2026/0035328 A1Mitsubishi Chemical Corporation
Most cited
By later US patents
- Diolefin dimerization catalyst and method for producing nitrosyl halides of iron triad metals45US 4,234,454 APhillips Petroleum Company · 1980
- Catalytic dimerization of conjugated dienes27US 3,957,894 AMitsui Petrochemical Industries, Ltd. · 1976
- Chain polyene group-containing norbornene compound and unsaturated ethylene copolymer using the same16US 6,040,407 AMitsui Petrochemical Industrial, Ltd. · 2000
- Process for producing alkylidenenorbornenes14US 4,891,460 ASan-Petrochemicals Co., Ltd. · 1990
- Catalyst for the dimerization of diolefins using the reductive properties of metal carbonyls12US 3,954,665 AInstitut Francais du Petroles des Carburants et Lubrifiants · 1976