Method and apparatus for carbonylating methanol with acetic acid enriched flash stream
US-9840451-B2 · Dec 12, 2017 · US
Carbonyls
Carbonyls · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01J31/20 |
| Official title | Carbonyls |
| Display label | Carbonyls |
| Total patents | 291 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 29 |
| 2017 | 27 |
| 2018 | 20 |
| 2019 | 33 |
| 2020 | 33 |
| 2021 | 27 |
| 2022 | 21 |
| 2023 | 22 |
| 2024 | 35 |
| 2025 | 25 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Catalytic hydrogenation process for the synthesis of terminal diols from terminal dialkyl aliphatic esters
US-2017349514-A1 · Dec 7, 2017 · US
Rh/WxC Heterogeneous Catalyst for Preparing Acetic Acid by Carbonylation Reaction
US-2017342012-A1 · Nov 30, 2017 · US
Substituted mononuclear ruthenium complexes for catalysis of synthetic organic reactions
US-9782762-B2 · Oct 10, 2017 · US
Methods of using homogenous rhodium catalysts with N-heterocyclic carbene ligands for the hydroformylation of olefins and substituted olefins
US-9765005-B2 · Sep 19, 2017 · US
Method for alkylation of amines
US-9751827-B2 · Sep 5, 2017 · US
Methyl-iodide-free carbonylation of an alcohol to its homologous aldehyde and/or alcohol
US-9718754-B2 · Aug 1, 2017 · US
Process for preparing alpha-silylamine compounds from alpha-silylmethyl azide compounds
US-2017210765-A1 · Jul 27, 2017 · US
Methyl-iodide-free carbonylation of an alcohol to its homologous aldehyde and/or alcohol
US-9714206-B2 · Jul 25, 2017 · US
Catalyst composition comprising phosphorus-based ligand and hydroformylation process using the same
US-9707552-B1 · Jul 18, 2017 · US
Catalyst composition comprising phosphorus-based ligand and hydroformylation process using the same
US-2017197201-A1 · Jul 13, 2017 · US
Transition metal-catalyzed processes for the preparation of N-allyl compounds and use thereof
US-9624232-B2 · Apr 18, 2017 · US
Catalyst composition for hydroformylation reaction and method of hydroformylating olefin using the same
US-9616422-B2 · Apr 11, 2017 · US
Catalyst recycle methods
US-2017096407-A1 · Apr 6, 2017 · US
Catalysts for epoxide carbonylation
US-2017080409-A1 · Mar 23, 2017 · US
Transition metal-catalyzed processes for the preparation of N-allyl compounds and use thereof
US-9593124-B2 · Mar 14, 2017 · US
Methods for producing butanol
US-2017015610-A1 · Jan 19, 2017 · US
Transition metal-catalyzed processes for the preparation of N-allyl compounds and use thereof
US-9499557-B2 · Nov 22, 2016 · US
Preparation method of aldehyde compound with limited amount of acrylonitrile
US-9487475-B2 · Nov 8, 2016 · US
Hydrogenated syndiotactic norbornene-based ring-opening polymer
US-2016264721-A1 · Sep 15, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J31/20?
- CPC B01J31/20 is the Cooperative Patent Classification code for “Carbonyls.”
- How many patents are filed under CPC B01J31/20 (Carbonyls)?
- Our database includes 291 publications tagged with this CPC code.
- Is patent activity under CPC B01J31/20 growing?
- Publication counts under this code: 35 in 2024 vs 25 in 2025 (latest complete years).