Modified carbonaceous material, carbon dioxide adsorbent and method for cellulose hydrolysis using the same
US-2020398248-A1 · Dec 24, 2020 · US
Nitrates
Nitrates · 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 | B01J27/25 |
| Official title | Nitrates |
| Display label | Nitrates |
| Total patents | 104 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 7 |
| 2017 | 12 |
| 2018 | 12 |
| 2019 | 9 |
| 2020 | 10 |
| 2021 | 10 |
| 2022 | 1 |
| 2023 | 6 |
| 2024 | 17 |
| 2025 | 5 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Epoxidation processes and catalysts for use therein
US-2020346193-A1 · Nov 5, 2020 · US
Processes for the preparation of heteroaryl carboxylic acids
US-2020347026-A1 · Nov 5, 2020 · US
Processes for the preparation of heteroaryl carboxylic acids
US-10745376-B2 · Aug 18, 2020 · US
Method for preparation of a monolithic catalyst for the reduction of nitrogen oxides, VOC and carbon monoxide in an off-gas
US-10717074-B2 · Jul 21, 2020 · US
Method of sweetening hydrocarbon gas from hydrogen sulfide
US-2020197865-A1 · Jun 25, 2020 · US
Process for hydrogenation of aromatic polycarboxylic acids or derivatives thereof to the corresponding alicyclic polycarboxylic acids or derivatives thereof
US-10640447-B1 · May 5, 2020 · US
Production method for halogenated pyrazolecarboxylic acid
US-2020010424-A1 · Jan 9, 2020 · US
Composite material for catalytic treatment of contaminated soil and water and catalytic treatment method thereof
US-10435317-B2 · Oct 8, 2019 · US
Carboxylic acid ester production method
US-10421705-B2 · Sep 24, 2019 · US
Catalysts For The Production Of Acrylic Acid Or Its Derivatives
US-2019176135-A9 · Jun 13, 2019 · US
Catalysts for natural gas processes
US-10300465-B2 · May 28, 2019 · US
Catalysts for the production of acrylic acid or its derivatives
US-10294186-B2 · May 21, 2019 · US
Processes for the preparation of heteroaryl carboxylic acids
US-2019062299-A1 · Feb 28, 2019 · US
Process for catalytic gasification of carbonaceous feedstock
US-10208262-B2 · Feb 19, 2019 · US
Biscarbodiimides and polycarbodiimides and method for their preparation
US-2019023652-A1 · Jan 24, 2019 · US
Composite catalyst for coal depolymerization and using method therefor
US-2019009256-A1 · Jan 10, 2019 · US
Carboxylic acid ester production method
US-2018354885-A1 · Dec 13, 2018 · US
Composite, a method of making thereof, and a method for degrading a pollutant
US-2018305231-A1 · Oct 25, 2018 · US
Catalysts for the conversion of hydroxypropionic acid or its derivatives to acrylic acid or its derivatives
US-10106484-B2 · Oct 23, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J27/25?
- CPC B01J27/25 is the Cooperative Patent Classification code for “Nitrates.”
- How many patents are filed under CPC B01J27/25 (Nitrates)?
- Our database includes 104 publications tagged with this CPC code.
- Is patent activity under CPC B01J27/25 growing?
- Publication counts under this code: 17 in 2024 vs 5 in 2025 (latest complete years).