Covalent organic frameworks for gas chromatographic separations
US-2026014512-A1 · Jan 15, 2026 · US
with heterocyclic compounds
with heterocyclic compounds · 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 | C08G12/26 |
| Official title | with heterocyclic compounds |
| Display label | with heterocyclic compounds |
| Total patents | 57 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 11 |
| 2017 | 8 |
| 2018 | 5 |
| 2019 | 2 |
| 2020 | 7 |
| 2021 | 4 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 2 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Composition for forming resist underlayer film with improved film density
US-12449732-B2 · Oct 21, 2025 · US
Resist underlayer film-forming composition containing indolocarbazole novolak resin
US-12242196-B2 · Mar 4, 2025 · US
Conductive film of fused porphyrins polymer and method of forming a coated substrate
US-12110418-B2 · Oct 8, 2024 · US
Resist underlayer film formation composition
US-2024103369-A1 · Mar 28, 2024 · US
Composition, method for manufacturing semiconductor substrate, polymer, and method for manufacturing polymer
US-2023416422-A1 · Dec 28, 2023 · US
Resist underlayer film-forming composition containing indolocarbazole novolak resin
US-2023324802-A1 · Oct 12, 2023 · US
Resist underlayer film-forming composition
US-2023259031-A1 · Aug 17, 2023 · US
Resist underlayer film-forming composition containing indolocarbazole novolak resin
US-11720024-B2 · Aug 8, 2023 · US
Resist underlayer film-forming composition containing novolac resin reacted with aromatic methylol compound
US-11650505-B2 · May 16, 2023 · US
Resist underlying film-forming composition for nanoimprinting
US-2023060585-A1 · Mar 2, 2023 · US
Resist underlayer film-forming composition containing indolocarbazole novolak resin
US-2022404707-A1 · Dec 22, 2022 · US
Poly(aryl piperidinium) polymers including those with stable cationic pendant groups for use as anion exchange membranes and ionomers
US-11512156-B2 · Nov 29, 2022 · US
Aerogel-based oxygen-reduction catalysts and processes for producing same
US-2022344674-A1 · Oct 27, 2022 · US
Phenothiazine based crosslinked polymer and methods thereof
US-11235306-B2 · Feb 1, 2022 · US
Conductive film of fused porphyrins polymer and method of forming a coated substrate
US-2022010146-A1 · Jan 13, 2022 · US
Polymer, hardmask composition, and method of forming patterns
US-11220570-B2 · Jan 11, 2022 · US
Formaldehyde free crosslinking compositions
US-11124606-B2 · Sep 21, 2021 · US
Resist underlayer film-forming composition
US-2021271169-A1 · Sep 2, 2021 · US
Poly(aryl piperidinium) polymers including those with stable cationic pendant groups for use as anion exchange membranes and ionomers
US-2021009726-A1 · Jan 14, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08G12/26?
- CPC C08G12/26 is the Cooperative Patent Classification code for “with heterocyclic compounds.”
- How many patents are filed under CPC C08G12/26 (with heterocyclic compounds)?
- Our database includes 57 publications tagged with this CPC code.
- Is patent activity under CPC C08G12/26 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).