Process for the high-yield preparation of p-(r)calix[9-20]arenes
US-2016368849-A1 · Dec 22, 2016 · US
by increasing the number of carbon atoms, e.g. by oligomerisation
by increasing the number of carbon atoms, e.g. by oligomerisation · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07C41/30 |
| Official title | by increasing the number of carbon atoms, e.g. by oligomerisation |
| Display label | by increasing the number of carbon atoms, e.g. by oligomerisation |
| Total patents | 374 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 47 |
| 2016 | 32 |
| 2017 | 46 |
| 2018 | 35 |
| 2019 | 44 |
| 2020 | 38 |
| 2021 | 29 |
| 2022 | 29 |
| 2023 | 26 |
| 2024 | 32 |
| 2025 | 12 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Alkenes as alkyne equivalents in radical cascades terminated by fragmentations
US-2016347778-A1 · Dec 1, 2016 · US
Coupling a phenol and an arene using selenium dioxide
US-2016340281-A1 · Nov 24, 2016 · US
Process for preparing 2,2'-dihydroxy-3,3'-di-tert-butyl-5,5'-dimethoxy-1,1'-biphenol
US-2016340280-A1 · Nov 24, 2016 · US
Cyclopolyarylene compound and method of manufacturing same
US-9481618-B2 · Nov 1, 2016 · US
Improvements in or relating to organic compounds
US-2016280615-A1 · Sep 29, 2016 · US
Method for producing fluorine-containing olefin
US-2016176791-A1 · Jun 23, 2016 · US
Compositions and processes of preparing and using the same
US-9359277-B2 · Jun 7, 2016 · US
Polymeric materials made from vanillin
US-9353219-B1 · May 31, 2016 · US
Paracyclophane-based ligands, their preparation and use in catalysis
US-9340519-B2 · May 17, 2016 · US
Simple organic molecules as catalysts for practical and efficient enantioselective synthesis of amines and alcohols
US-9328061-B2 · May 3, 2016 · US
A process for the preparation of 3-aryl-2-hydroxy propanoic acid compounds
US-2016102042-A1 · Apr 14, 2016 · US
Catalysis by metal nanoparticles dispersed within a hierarchically porous carbon material
US-2016089657-A1 · Mar 31, 2016 · US
Use of metal-accumulating plants for implementing chemical reactions
US-2015360066-A1 · Dec 17, 2015 · US
Phosphine ligands for catalytic reactions
US-2015360215-A1 · Dec 17, 2015 · US
Enantioselective process for the preparation of enantiomers of sex pheromones
US-2015361025-A1 · Dec 17, 2015 · US
Route to synthetic analogues of Rocaglamide and Aglafoline using cascade transformations initiated by oxy-cope rearrangement of bis-alkynes
US-9206100-B2 · Dec 8, 2015 · US
Catalyst
US-2015344595-A1 · Dec 3, 2015 · US
Phosphine ligands for catalytic reactions
US-9200021-B2 · Dec 1, 2015 · US
Catalyst
US-2015329653-A1 · Nov 19, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C41/30?
- CPC C07C41/30 is the Cooperative Patent Classification code for “by increasing the number of carbon atoms, e.g. by oligomerisation.”
- How many patents are filed under CPC C07C41/30 (by increasing the number of carbon atoms, e.g. by oligomerisation)?
- Our database includes 374 publications tagged with this CPC code.
- Is patent activity under CPC C07C41/30 growing?
- Publication counts under this code: 32 in 2024 vs 12 in 2025 (latest complete years).