Method for reducing carbon dioxide emissions in a urea plant
US-2026070875-A1 · Mar 12, 2026 · US
This page is not indexed by search engines while we improve data quality.
Preparation of ammonia from nitrogenous organic substances
Preparation of ammonia from nitrogenous organic substances · 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 | C01C1/08 |
| Official title | Preparation of ammonia from nitrogenous organic substances |
| Display label | Preparation of ammonia from nitrogenous organic substances |
| Total patents | 17 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 3 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ammonia synthesis methods and systems
US-12570536-B2 · Mar 10, 2026 · US
Photodriven transfer hydrogenation of n2 to nh3
US-2023382749-A1 · Nov 30, 2023 · US
Ammonia synthesis methods and systems
US-2023002239-A1 · Jan 5, 2023 · US
Carbonaceous material for negative electrode active material for non-aqueous electrolyte secondary batteries, non-aqueous electrolyte secondary battery negative electrode, non-aqueous electrolyte secondary battery, and production method of carbonaceous material
US-11492260-B2 · Nov 8, 2022 · US
Ammonia synthesis methods and systems
US-11440808-B2 · Sep 13, 2022 · US
Carbonaceous material for negative electrode active material for non-aqueous electrolyte secondary batteries, non-aqueous electrolyte secondary battery negative electrode, non-aqueous electrolyte secondary battery, and production method of carbonaceous material
US-2021094826-A1 · Apr 1, 2021 · US
Dosing method and apparatus for reductant urea solutions with catalyst precursors to assist selective catalytic reduction
US-10378411-B1 · Aug 13, 2019 · US
Ammonia synthesis methods and systems
US-2019202707-A1 · Jul 4, 2019 · US
Treatment of reductant urea solutions with catalyst precursors to assist selective catalytic reduction
US-10267196-B1 · Apr 23, 2019 · US
First row transition metal amino borohydrides
US-10081649-B2 · Sep 25, 2018 · US
Method for producing alpha-hydroxy carboxylic esters in the gas phase
US-9809530-B2 · Nov 7, 2017 · US
First Row Transition Metal Amino Borohydrides
US-2017275320-A1 · Sep 28, 2017 · US
Method for producing alpha-hydroxy carboxylic esters in the gas phase
US-2017144960-A1 · May 25, 2017 · US
Method for recovering volatile components from a solid
US-9334172-B2 · May 10, 2016 · US
Method for recovering volatile components from a solid
US-2016016808-A1 · Jan 21, 2016 · US
Method and system for treatment of biological wastes for preparation of fertilizers
US-9034070-B2 · May 19, 2015 · US