Method for Preparing Anhydrosugar Alcohol Using Two-Step Hydrothermal Reaction
US-2017253608-A1 · Sep 7, 2017 · US
Sulfates
Sulfates · 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 | B01J27/053 |
| Official title | Sulfates |
| Display label | Sulfates |
| Total patents | 231 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 33 |
| 2017 | 35 |
| 2018 | 21 |
| 2019 | 22 |
| 2020 | 23 |
| 2021 | 24 |
| 2022 | 13 |
| 2023 | 17 |
| 2024 | 13 |
| 2025 | 7 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Aromatic Alkylation Using Chemically-Treated Solid Oxides
US-2017233309-A1 · Aug 17, 2017 · US
Process for the isolation of 1,2,5,6-hexanetetrol from sorbitol hydrogenolysis reaction mixtures using simulated moving bed chromatography
US-9732020-B2 · Aug 15, 2017 · US
Silica-coated alumina activator-supports for metallocene catalyst compositions
US-9670296-B2 · Jun 6, 2017 · US
Aromatic alkylation using chemically-treated solid oxides
US-9611188-B1 · Apr 4, 2017 · US
Ammonia synthesis catalyst
US-9592495-B2 · Mar 14, 2017 · US
Catalyst for glycerin dehydration, preparation method thereof, and preparation method of acrolein
US-9527065-B2 · Dec 27, 2016 · US
Solid acid catalyst for preparing a monosaccharide and method of preparing a monosaccharide from seaweed using the same
US-9504992-B2 · Nov 29, 2016 · US
Method and apparatus for chemical process intensification
US-9486787-B1 · Nov 8, 2016 · US
Method for producing 2-furaldehyde
US-2016304482-A1 · Oct 20, 2016 · US
Ionic liquid catalyst for improvement of heavy and extra heavy crude
US-9464239-B2 · Oct 11, 2016 · US
Method for producing NOx removal catalyst for high-temperature exhaust gas
US-9463453-B2 · Oct 11, 2016 · US
Oligomerization of Alpha Olefins Using Metallocene-SSA Catalyst Systems and Use of the Resultant Polyalphaolefins to Prepare Lubricant Blends
US-2016264493-A1 · Sep 15, 2016 · US
Uniformly, highly dispersed metal catalyst and process for producing the same
US-RE46145-E · Sep 13, 2016 · US
Pentenenitrile isomerization
US-9440912-B2 · Sep 13, 2016 · US
Exhaust gas treatment catalyst
US-9421525-B2 · Aug 23, 2016 · US
Silica-Coated Alumina Activator-Supports For Metallocene Catalyst Compositions
US-2016222141-A1 · Aug 4, 2016 · US
Method for producing 2-furaldehyde
US-9403787-B2 · Aug 2, 2016 · US
Method for preparing organic peroxides
US-2016207882-A1 · Jul 21, 2016 · US
Method for preparing 5-hydroxymethyl-2-furfural using acid catalyst in presence of ethylene glycol-based compound solvent derived from biomass
US-2016207896-A1 · Jul 21, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J27/053?
- CPC B01J27/053 is the Cooperative Patent Classification code for “Sulfates.”
- How many patents are filed under CPC B01J27/053 (Sulfates)?
- Our database includes 231 publications tagged with this CPC code.
- Is patent activity under CPC B01J27/053 growing?
- Publication counts under this code: 13 in 2024 vs 7 in 2025 (latest complete years).