Sulfonic acid-modified polyisocyanate and preparation method therefor
US-12559453-B2 · Feb 24, 2026 · US
Heterocyclic amines; Salts thereof
Heterocyclic amines; Salts 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 | C08G18/20 |
| Official title | Heterocyclic amines; Salts thereof |
| Display label | Heterocyclic amines; Salts thereof |
| Total patents | 41 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 5 |
| 2017 | 7 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 1 |
| 2023 | 7 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for preparing a cross-linkable composition
US-12331151-B2 · Jun 17, 2025 · US
Polymerizable composition, resin, formed body, optical material, and lens
US-2024117100-A1 · Apr 11, 2024 · US
Application of the ring-opening of uretdiones at low temperature and ambient atmosphere
US-2023323013-A1 · Oct 12, 2023 · US
Polyurethane resin, non-natural leather, and ink
US-2023323010-A1 · Oct 12, 2023 · US
Hcfo-containing isocyanate-reactive compositions, related foam-forming compositions and foams
US-2023303757-A1 · Sep 28, 2023 · US
Multilayered Structure and a Process for Preparing the Same
US-2023279174-A1 · Sep 7, 2023 · US
Sulfonic acid-modified polyisocyanate and preparation method therefor
US-2023257344-A1 · Aug 17, 2023 · US
Cationic electrodeposition coating composition
US-11639446-B2 · May 2, 2023 · US
Electrically dissipative polyurethane foams and use thereof in trench breakers or pipeline pillows
US-2023104226-A1 · Apr 6, 2023 · US
Method for preparing a cross-linkable composition
US-2022220245-A1 · Jul 14, 2022 · US
Isocyanate polymerization catalyst, preparation method thereof, and method for preparing polyisocyanate by using same
US-11111332-B2 · Sep 7, 2021 · US
Pour-in-place polyurethane insulation foam composition comprising halogenated olefins
US-2021061937-A1 · Mar 4, 2021 · US
Isocyanate-epoxy-foam system
US-10907021-B2 · Feb 2, 2021 · US
Process for producing a ring-opening polymerization product
US-10899866-B2 · Jan 26, 2021 · US
Cationic electrodeposition coating composition
US-2020248009-A1 · Aug 6, 2020 · US
Isocyanate Polymerization Catalyst, Preparation Method Thereof, And Method For Preparing Polyisocyanate By Using Same
US-2020123300-A1 · Apr 23, 2020 · US
Storage-stable one-component polyurethane prepregs and shaped bodies composed of polyurethane composition that have been produced therefrom
US-10626236-B2 · Apr 21, 2020 · US
Method for modifying at least pentamethylene diisocyanate by means of spirocyclic ammonium salts as catalyst
US-2020002462-A1 · Jan 2, 2020 · US
Aging-resistant polyurethane seal
US-10370480-B2 · Aug 6, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08G18/20?
- CPC C08G18/20 is the Cooperative Patent Classification code for “Heterocyclic amines; Salts thereof.”
- How many patents are filed under CPC C08G18/20 (Heterocyclic amines; Salts thereof)?
- Our database includes 41 publications tagged with this CPC code.
- Is patent activity under CPC C08G18/20 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).