Carboxylic acid ester production method
US-2018354885-A1 · Dec 13, 2018 · US
Operations & Transport
Operations & Transport · 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 | B01J27/138 |
| Official title | — |
| Display label | Operations & Transport (mapped technology topic) |
| Total patents | 175 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 16 |
| 2017 | 23 |
| 2018 | 23 |
| 2019 | 20 |
| 2020 | 23 |
| 2021 | 16 |
| 2022 | 8 |
| 2023 | 8 |
| 2024 | 10 |
| 2025 | 9 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Synthesis of Magnesium Dichloride Support For The AST Off-Line ZN Catalyst With a Plug Flow Reactor (PFR)
US-2018327273-A1 · Nov 15, 2018 · US
Method of Producing a Body Comprising Porous Alpha Silicon Carbide and the Body Produced by the Method
US-2018257994-A1 · Sep 13, 2018 · US
Catalysts For Making Acrylic Acid From Lactic Acid Or Its Derivatives In Liquid Phase
US-2018029026-A1 · Feb 1, 2018 · US
Process for producing chlorotrifluoroethylene
US-9850188-B2 · Dec 26, 2017 · US
Production of unsaturated carboxylic acids or acid esters with a haloapatite-based catalyst
US-2017341061-A1 · Nov 30, 2017 · US
Process for preparing a chlorine comprising catalyst, the prepared catalyst, and its use
US-2017297006-A1 · Oct 19, 2017 · US
Catalyst for preparing chlorine by oxidation of hydrogen chloride and preparation thereof
US-2017274361-A1 · Sep 28, 2017 · US
Method for synthesising dimethyl carbonate
US-9765011-B2 · Sep 19, 2017 · US
Method for Preparing Anhydrosugar Alcohol Using Two-Step Hydrothermal Reaction
US-2017253608-A1 · Sep 7, 2017 · US
Process for preparing organic esters
US-2017247347-A1 · Aug 31, 2017 · US
Catalyst for the oxychlorination of ethylene to 1, 2-dichloroethane
US-9744525-B2 · Aug 29, 2017 · US
Process for preparing a chlorine comprising catalyst, the prepared catalyst, and its use
US-9737882-B2 · Aug 22, 2017 · US
Solid catalyst for the (co)polymerisation of alpha-olefins and process for the preparation thereof
US-2017216825-A1 · Aug 3, 2017 · US
Catalyst comprising fluorinated metal oxide, manufacture process and hydrogenation process
US-2017216830-A1 · Aug 3, 2017 · US
Oxidation catalyst for furfural compounds and applying method thereof
US-9707547-B2 · Jul 18, 2017 · US
Zinc-based nanohybrids, devices and methods thereof
US-9700882-B2 · Jul 11, 2017 · US
Heterogeneous catalyst and catalyst system for producing 1,2-dichloroethane
US-9687824-B2 · Jun 27, 2017 · US
Process for producing 2,3,3,3-tetrafluoropropene
US-2017166500-A1 · Jun 15, 2017 · US
Catalyst prepared by reactive milling
US-9630170-B2 · Apr 25, 2017 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J27/138?
- CPC B01J27/138 is the Cooperative Patent Classification code for “Operations & Transport.”
- How many patents are filed under CPC B01J27/138 (Operations & Transport)?
- Our database includes 175 publications tagged with this CPC code.
- Is patent activity under CPC B01J27/138 growing?
- Publication counts under this code: 10 in 2024 vs 9 in 2025 (latest complete years).