Ammonia generator using plasma
US-2024254635-A1 · Aug 1, 2024 · US
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Methods for the preparation of nitrates in general (particular individual nitrates, see the relevant groups of subclasses C01B - C01G, according to the cation)
Methods for the preparation of nitrates in general (particular individual nitrates, see the relevant groups of subclasses C01B - C01G, according to the cation) · 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 | C01B21/48 |
| Official title | Methods for the preparation of nitrates in general (particular individual nitrates, see the relevant groups of subclasses C01B - C01G, according to the cation) |
| Display label | Methods for the preparation of nitrates in general (particular individual nitrates, see the relevant groups of subclasses C01B - C01G, according to the cation) |
| Total patents | 24 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods for Oxidizing a Nitrogen Oxide to Nitrate
US-2024190706-A1 · Jun 13, 2024 · US
Utilization of nitrogen oxides from ambient air
US-11826693-B2 · Nov 28, 2023 · US
Ozone-mediated synthesis of nanostructures
US-11577956-B2 · Feb 14, 2023 · US
Nitrate process for manufacturing transition metal hydroxide precursors
US-11401167-B2 · Aug 2, 2022 · US
Process for preparing an iron-chromium catalyst with a platinum promoter, and catalyst consisting of iron chromium with a platinum promoter
US-11241683-B2 · Feb 8, 2022 · US
Utilization of nitrogen oxides from ambient air
US-2021252449-A1 · Aug 19, 2021 · US
Utilization of pollutants from internal combustion engines
US-10919769-B2 · Feb 16, 2021 · US
Process for preparation of homogeneous mixture for thermal storage and heat transfer applications
US-10907079-B2 · Feb 2, 2021 · US
Utilization of pollutants from internal combustion engines
US-2020198970-A1 · Jun 25, 2020 · US
Nitrate process for manufacturing transition metal hydroxide precursors
US-2020031682-A1 · Jan 30, 2020 · US
Ozone-Mediated Synthesis of Nanostructures
US-2019315629-A1 · Oct 17, 2019 · US
Process for preparing an iron-chromium catalyst with a platinum promoter, and catalyst consisting of iron chromium with a platinum promoter
US-2018093261-A1 · Apr 5, 2018 · US
Method for producing anhydrous calcium nitrate powder
US-9908787-B2 · Mar 6, 2018 · US
Recovery of bromide from sulfate comprising aqueous streams
US-9850129-B2 · Dec 26, 2017 · US
Catalyst manufacturing method
US-9839907-B2 · Dec 12, 2017 · US
A process for preparation of homogenous mixture for thermal storage and heat transfer applications
US-2017283674-A1 · Oct 5, 2017 · US
Catalyst manufacturing method
US-2017189897-A1 · Jul 6, 2017 · US
Method for producing anhydrous calcium nitrate powder
US-2017096347-A1 · Apr 6, 2017 · US
Catalyst manufacturing method
US-2016136634-A1 · May 19, 2016 · US