Interesterification catalyst and process
US-9850450-B2 · Dec 26, 2017 · US
Alkali metals
Alkali metals · 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 | B01J23/04 |
| Official title | Alkali metals |
| Display label | Alkali metals |
| Total patents | 421 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 25 |
| 2016 | 22 |
| 2017 | 33 |
| 2018 | 45 |
| 2019 | 43 |
| 2020 | 51 |
| 2021 | 48 |
| 2022 | 33 |
| 2023 | 47 |
| 2024 | 35 |
| 2025 | 30 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Catalysts for the dehydration of hydroxypropionic acid and its derivatives
US-9849447-B2 · Dec 26, 2017 · US
Steam reforming catalyst and method of making thereof
US-9789470-B2 · Oct 17, 2017 · US
Co slip catalyst and method of using
US-2017284262-A1 · Oct 5, 2017 · US
Porous bodies with enhanced pore architecture
US-9776169-B2 · Oct 3, 2017 · US
Catalyst for the synthesis of alkyl mercaptans and process for producing it
US-9764309-B2 · Sep 19, 2017 · US
Nanowire catalysts and methods for their use and preparation
US-9751818-B2 · Sep 5, 2017 · US
Exhaust gas purification catalyst, exhaust gas purification device and filter, and production method for said catalyst
US-2017248049-A1 · Aug 31, 2017 · US
CO slip catalyst and method of using
US-9694349-B2 · Jul 4, 2017 · US
Exhaust gas purifying catalyst, exhaust gas purification device and filter, and method for producing said catalyst
US-2017157596-A1 · Jun 8, 2017 · US
Gasoline engine with an exhaust system for combusting particulate matter
US-2017080388-A1 · Mar 23, 2017 · US
Catalysts For The Dehydration Of Hydroxypropionic Acid And Its Derivatives
US-2017056863-A1 · Mar 2, 2017 · US
Dual catalyst system for performing a ketonisation reaction and a hydrotreatment reaction simultaneously
US-9545621-B2 · Jan 17, 2017 · US
Phoyocatalytic coating
US-2016361706-A1 · Dec 15, 2016 · US
Method for producing porous bodies with enhanced properties
US-2016354759-A1 · Dec 8, 2016 · US
Porous bodies with enhanced pore architecture
US-2016354760-A1 · Dec 8, 2016 · US
Anionic polymerization initiator having anionic terminal comprising amine group, production method for modified conjugated diene-based copolymer using same, and rubber composition comprising modified conjugated diene-based copolymer produced in accordance therewith
US-2016347877-A1 · Dec 1, 2016 · US
Method of producing graphene from a hydrocarbon gas and liquid metal catalysts
US-2016347618-A1 · Dec 1, 2016 · US
Synthesis method for tuning shape, exposed crystal face and size of titanium dioxide
US-9505630-B2 · Nov 29, 2016 · US
Heterogeneous hydrocyanation
US-2016311763-A1 · Oct 27, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J23/04?
- CPC B01J23/04 is the Cooperative Patent Classification code for “Alkali metals.”
- How many patents are filed under CPC B01J23/04 (Alkali metals)?
- Our database includes 421 publications tagged with this CPC code.
- Is patent activity under CPC B01J23/04 growing?
- Publication counts under this code: 35 in 2024 vs 30 in 2025 (latest complete years).