Method for producing the pentazolate anion using a hypervalent iodine oxidant
US-12595174-B2 · Apr 7, 2026 · US
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Nitrogen; Compounds thereof
Nitrogen; Compounds thereof · 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 | C01B21/00 |
| Official title | Nitrogen; Compounds thereof |
| Display label | Nitrogen; Compounds thereof |
| Total patents | 21 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 3 |
| 2024 | 5 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Apparatus and associated accessories, methods and uses for visualising a print on an object
US-12390129-B2 · Aug 19, 2025 · US
Method for delithiating at least one lithium and transition-metal nitride
US-2025062342-A1 · Feb 20, 2025 · US
Method for producing the pentazolate anion using a hypervalent iodine oxidant
US-2024391772-A1 · Nov 28, 2024 · US
Apparatus and associated accessories, methods and uses for visualising a print on an object
US-2024245322-A1 · Jul 25, 2024 · US
Apparatus and associated accessories, methods and uses for visualising a print on an object
US-11937919-B2 · Mar 26, 2024 · US
Method and system for fabricating two-dimensional material by using gas-phase method
US-2024092702-A1 · Mar 21, 2024 · US
Rate/kinetic selective multiple bed adsorption process cycle
US-11883775-B2 · Jan 30, 2024 · US
Characteristics of tunable adsorbents for rate selective separation of nitrogen from methane
US-11471820-B2 · Oct 18, 2022 · US
Fluorescent member and light-emitting module
US-11402077-B2 · Aug 2, 2022 · US
Process for regulating an oxygen production unit by comparison of the differential pressures characteristic of different adsorbers
US-11369916-B2 · Jun 28, 2022 · US
Apparatus and associated accessories, methods and uses for visualising a print on an object
US-2021393169-A1 · Dec 23, 2021 · US
Process for handling variable flow rates and compositions in pressure swing adsorption systems
US-2021077942-A1 · Mar 18, 2021 · US
Rate/kinetic selective multiple bed adsorption process cycle
US-2021023497-A1 · Jan 28, 2021 · US
Process for regulating an oxygen production unit by comparison of the differential pressures characteristic of different adsorbers
US-2020368671-A1 · Nov 26, 2020 · US
Carbon molecular sieve adsorbent
US-10835856-B2 · Nov 17, 2020 · US
Improved Carbon Molecular Sieve Adsorbent
US-2020054986-A1 · Feb 20, 2020 · US
Integrated thermal processing for mesophase pitch production, asphaltene removal, and crude oil and residue upgrading
US-10508240-B2 · Dec 17, 2019 · US
Fluorescent member and light-emitting module
US-2019032886-A1 · Jan 31, 2019 · US
Integrated thermal processing for mesophase pitch production, asphaltene removal, and crude oil and residue upgrading
US-2018362855-A1 · Dec 20, 2018 · US