Method of producing thiourethane resin raw material and application thereof, method of producing polythiol composition and application thereof, and polythiol composition
US-12534431-B2 · Jan 27, 2026 · US
of hydropolysulfides or polysulfides
of hydropolysulfides or polysulfides · 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 | C07C319/22 |
| Official title | of hydropolysulfides or polysulfides |
| Display label | of hydropolysulfides or polysulfides |
| Total patents | 52 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 7 |
| 2019 | 6 |
| 2020 | 10 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 4 |
| 2024 | 4 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of producing polyamine compound and application thereof
US-2026015320-A1 · Jan 15, 2026 · US
Method of producing polyamine compound and application thereof
US-12497357-B2 · Dec 16, 2025 · US
Method for producing aryl ester-containing carboxylic acid and method for producing cationic lipid
US-2025214935-A1 · Jul 3, 2025 · US
Method for producing sulfurized olefin
US-2025115550-A1 · Apr 10, 2025 · US
Methods of preparing cytotoxic benzodiazepine derivatives
US-11981688-B2 · May 14, 2024 · US
Dithiapolyether diol, method for producing same, snag plating solution containing dithiapolyether diol, and method for forming plating film with use of snag plating solution
US-2024116861-A1 · Apr 11, 2024 · US
Process for the purification of hydrogen cyanide
US-11939281-B2 · Mar 26, 2024 · US
Extreme pressure additives with improved copper corrosion
US-11873461-B1 · Jan 16, 2024 · US
Method of producing polyamine compound and application thereof
US-2023286897-A1 · Sep 14, 2023 · US
Process of making n,n-diacetyl-l-cystine disodium salt from cystine and acetyl chloride in methanol in the presence of sodium hydroxide
US-2023250055-A1 · Aug 10, 2023 · US
Method of producing thiourethane resin raw material and application thereof, method of producing polythiol composition and application thereof, and polythiol composition
US-2023088165-A1 · Mar 23, 2023 · US
Methods of preparing cytotoxic benzodiazepine derivatives
US-2023045079-A1 · Feb 9, 2023 · US
Silane disulfide vegetable oils, method of making and use in rubber compositions and tires
US-11440877-B2 · Sep 13, 2022 · US
Methods of preparing cytotoxic benzodiazepine derivatives
US-11396519-B2 · Jul 26, 2022 · US
Process for the purification of hydrogen cyanide
US-2021269396-A1 · Sep 2, 2021 · US
Silane disulfide vegetable oils, method of making and use in rubber compositions and tires
US-2021130553-A1 · May 6, 2021 · US
Methods of preparing cytotoxic benzodiazepine derivatives
US-2021122768-A1 · Apr 29, 2021 · US
Method for producing mercaptophenol compound and intermediate of said compound
US-10851052-B2 · Dec 1, 2020 · US
Phenolic resin composition and the use thereof in a rubber composition to reduce hysteresis
US-10851224-B2 · Dec 1, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C319/22?
- CPC C07C319/22 is the Cooperative Patent Classification code for “of hydropolysulfides or polysulfides.”
- How many patents are filed under CPC C07C319/22 (of hydropolysulfides or polysulfides)?
- Our database includes 52 publications tagged with this CPC code.
- Is patent activity under CPC C07C319/22 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).