Integrated process for the synthesis of ammonia and nitric acid
US-2024359982-A1 · Oct 31, 2024 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01B21/26 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 75 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 3 |
| 2017 | 6 |
| 2018 | 2 |
| 2019 | 6 |
| 2020 | 7 |
| 2021 | 9 |
| 2022 | 6 |
| 2023 | 9 |
| 2024 | 11 |
| 2025 | 6 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Dual pressure system for producing nitric acid and method of operating thereof
US-2024336481-A1 · Oct 10, 2024 · US
SYSTEM FOR EVACUATING NOx GASES FROM A NITRIC ACID STORAGE TANK
US-2024228284-A1 · Jul 11, 2024 · US
High energy recovery nitric acid process using liquid oxygen containing fluid
US-11905172-B2 · Feb 20, 2024 · US
Ammonia burner for nitric acid production
US-2024002231-A1 · Jan 4, 2024 · US
Mono-pressure plant for the production of nitric acid and method for operating same
US-2023382734-A1 · Nov 30, 2023 · US
Method for oxidizing ammonia and system suitable therefor
US-11820653-B2 · Nov 21, 2023 · US
Nitric acid production process and plant with oxygen supply unit
US-11772971-B2 · Oct 3, 2023 · US
Dual pressure plant for the production of nitric acid and method for operating same
US-2023264957-A1 · Aug 24, 2023 · US
Nitric acid production process and plant with oxygen supply unit
US-2023257268-A1 · Aug 17, 2023 · US
Method for the catalytic oxidation of ammonia gas
US-11643327-B2 · May 9, 2023 · US
Process for the production of nitric acid
US-2023115002-A1 · Apr 13, 2023 · US
Absorption tower for a nitric acid plant method for producing nitric acid
US-2023074083-A1 · Mar 9, 2023 · US
Process and plant for preparing nitric acid
US-2023038954-A1 · Feb 9, 2023 · US
Autothermal ammonia cracking process
US-11511991-B2 · Nov 29, 2022 · US
Process and reactor for catalytic oxidation of ammonia
US-2022332581-A1 · Oct 20, 2022 · US
A plant for the production of nitric acid, a related process and method of revamping
US-2022227628-A1 · Jul 21, 2022 · US
Method and plant for producing nitric acid
US-11390523-B2 · Jul 19, 2022 · US
Plant for the production of nitric acid, a related process and method of revamping
US-2022219985-A1 · Jul 14, 2022 · US
Plant for the production of nitric acid, a related process and method of revamping
US-11292719-B2 · Apr 5, 2022 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B21/26?
- CPC C01B21/26 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C01B21/26 (Chemistry & Metallurgy)?
- Our database includes 75 publications tagged with this CPC code.
- Is patent activity under CPC C01B21/26 growing?
- Publication counts under this code: 11 in 2024 vs 6 in 2025 (latest complete years).