Method for producing the pentazolate anion using a hypervalent iodine oxidant
US-12595174-B2 · Apr 7, 2026 · US
Heterocyclic compounds containing rings having more than four nitrogen atoms as the only ring hetero atoms
Heterocyclic compounds containing rings having more than four nitrogen atoms as the only ring hetero atoms · 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 | C07D259/00 |
| Official title | Heterocyclic compounds containing rings having more than four nitrogen atoms as the only ring hetero atoms |
| Display label | Heterocyclic compounds containing rings having more than four nitrogen atoms as the only ring hetero atoms |
| Total patents | 35 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 4 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Squaramide covalent organic frameworks
US-2026077335-A1 · Mar 19, 2026 · US
Silicon-based fluoride acceptor groups for radiopharmaceuticals
US-2026027244-A1 · Jan 29, 2026 · US
A new bifunctional linchpin that reacts selectively with cysteine residues to invoke cyclization while concurrently introducing a dotaga moiety for radiometal chelation
US-2025270238-A1 · Aug 28, 2025 · US
Biodegradable lipids and formulations for delivery of mrna
US-2025205158-A1 · Jun 26, 2025 · US
Method for producing the pentazolate anion using a hypervalent iodine oxidant
US-2024391772-A1 · Nov 28, 2024 · US
Organic electroluminescent material and application thereof in optoelectronic devices
US-12030898-B2 · Jul 9, 2024 · US
Linear and cyclic aromatic oligoamides, methods of making same, and uses thereof
US-2024002333-A1 · Jan 4, 2024 · US
Electrophotographic photosensitive member, process cartridge, and image forming apparatus
US-2022413404-A1 · Dec 29, 2022 · US
Methods and compositions for nanopore sequencing
US-11531020-B2 · Dec 20, 2022 · US
Dissolution of hexamine in non-aqueous solvent
US-11292971-B2 · Apr 5, 2022 · US
Organic electroluminescent material and application thereof in optoelectronic devices
US-2022033420-A1 · Feb 3, 2022 · US
Methods and compositions for nanopore sequencing
US-2021132032-A1 · May 6, 2021 · US
Macrocyclic compounds and methods of making and using same
US-10781234-B2 · Sep 22, 2020 · US
Dissolution of hexamine in non-aqueous solvent
US-2020224104-A1 · Jul 16, 2020 · US
Dissolution of hexamine in non-aqueous solvent
US-10633602-B2 · Apr 28, 2020 · US
Phosphoric acid loaded covalent organic framework and a process for the preparation thereof
US-10336715-B2 · Jul 2, 2019 · US
Macrocyclic compounds and methods of making and using same
US-2019135866-A1 · May 9, 2019 · US
Cyclic peptidomimetic compounds as immunomodulators
US-10106581-B2 · Oct 23, 2018 · US
Dissolution of hexamine in non-aqueous solvent
US-2018282637-A1 · Oct 4, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D259/00?
- CPC C07D259/00 is the Cooperative Patent Classification code for “Heterocyclic compounds containing rings having more than four nitrogen atoms as the only ring hetero atoms.”
- How many patents are filed under CPC C07D259/00 (Heterocyclic compounds containing rings having more than four nitrogen atoms as the only ring hetero atoms)?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC C07D259/00 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).