B01J 2231/324
Cyclisations via conversion of c-c multiple to single or less multiple bonds
Official title: Cyclisations via conversion of C-C multiple to single or less multiple bonds, e.g. cycloadditions
B01J2231/324 (Cyclisations via conversion of c-c multiple to single or less multiple bonds) appears on 184 US grants and 158 published applications in this corpus.
Search patents in B01J- Granted patents
- 184
- Published applications
- 158
- Assignees
- 121
- Inventors
- 433
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 8 | 2 |
| 2002 | 12 | 9 |
| 2003 | 8 | 8 |
| 2004 | 3 | 10 |
| 2005 | 10 | 9 |
| 2006 | 4 | 5 |
| 2007 | 5 | 3 |
| 2008 | 6 | 2 |
| 2009 | 2 | 8 |
| 2010 | 6 | 5 |
| 2011 | 2 | 2 |
| 2012 | 7 | 5 |
| 2013 | 1 | 5 |
| 2014 | 5 | 3 |
| 2015 | 6 | 6 |
| 2016 | 6 | 13 |
| 2017 | 8 | 9 |
| 2018 | 8 | 9 |
| 2019 | 5 | 2 |
| 2020 | 3 | 5 |
| 2021 | 6 | 8 |
| 2022 | 8 | 11 |
| 2023 | 4 | 4 |
| 2024 | 7 | 6 |
| 2025 | 3 | 6 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Air-stable ni(0)-olefin complexes and their use as catalysts or precatalysts24 Feb 2026US 12,558,677 B2Studiengesellschaft Kohle mbH
- Diphenylamine-linked chiral bis(oxazoline) ligand without C2-symmetry, synthesis method and application thereof10 Feb 2026US 12,545,651 B2Zhejiang University of Technology
- Method for synthesizing thieno[3,2-b]pyridine-5(4H)-one derivative compound, using gold catalyst, and use therefor16 Sep 2025US 12,415,813 B2Korea Institute of Ocean Science & Technology
- Continuous preparation method for penem intermediate map26 Aug 2025US 12,398,161 B2Jilin Asymchem Pharmaceuticals Co., Ltd.
- Light upconversion silica particles22 Apr 2025US 12,280,150 B2International Business Machines Corporation
- Immobilized quaternary phosphonium salt having phenol domain, method for producing same, and cyclic carbonate production method using same17 Sep 2026US 2026/0274874 A1Shin-Etsu Chemical Co., Ltd.
- Manufacturing 2,3,5-trimethylhydroquinone from a mixture of mesitol and 2,3,6-trimethylphenol20 Aug 2026US 2026/0242317 A1Dsm IP Assets B.V.
- Intermolecular cyclopropanation of unsaturated hydrocarbons20 Aug 2026US 2026/0242327 A1The Penn State Research Foundation
- A new route for synthesizing axially chiral cannabinoids from coumarins23 Oct 2025US 2025/0326733 A1
- Chiral spirocyclic compounds and methods of preparation and use thereof17 Jul 2025US 2025/0229262 A1The Hong Kong University of Science and Technology
Most cited
By later US patents
- Copper-catalysed ligation of azides and acetylenes267US 7,375,234 B2The Scripps Research Institute · 2008
- Copper-catalysed ligation of azides and acetylenes71US 7,763,736 B2The Scripps Research Institute · 2010
- Perfluorinated amide salts and their uses as ionic conducting materials61US 6,319,428 B1Centre National De La Recherche Scientifique · 2001
- Asymmetric syntheses48US 5,360,938 AUnion Carbide Chemicals & Plastics Technology Corporation · 1994
- Diolefin dimerization catalyst and method for producing nitrosyl halides of iron triad metals45US 4,234,454 APhillips Petroleum Company · 1980