Method for the synthesis of acrylic (co)polymers from oligomers of acrylic acid
US-2018346625-A1 · Dec 6, 2018 · US
Sulfonation; Sulfation
Sulfonation; Sulfation · 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 | C08F8/36 |
| Official title | Sulfonation; Sulfation |
| Display label | Sulfonation; Sulfation |
| Total patents | 172 |
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 | 18 |
| 2016 | 12 |
| 2017 | 19 |
| 2018 | 23 |
| 2019 | 12 |
| 2020 | 20 |
| 2021 | 20 |
| 2022 | 16 |
| 2023 | 11 |
| 2024 | 13 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polymeric sorbents for aldehydes
US-2018345246-A1 · Dec 6, 2018 · US
Multi-component copolymer, rubber composition, crosslinked rubber composition, rubber product and tire
US-2018298136-A1 · Oct 18, 2018 · US
Multi-component copolymer, rubber composition, crosslinked rubber composition, rubber product, and tire
US-2018298135-A1 · Oct 18, 2018 · US
Multi-acid polymers and methods of making the same
US-10035144-B2 · Jul 31, 2018 · US
Catalyst resin
US-10023711-B2 · Jul 17, 2018 · US
Phosphorylated polymers
US-2018148530-A1 · May 31, 2018 · US
Sulfonated aminomethylated chelate resins
US-9950320-B2 · Apr 24, 2018 · US
Process for crosslinking polypropylene
US-2018086887-A1 · Mar 29, 2018 · US
Anionically modified polyallylamine derivative, use of anionically modified polyallylamine derivative as medicine, particularly for propylaxis and treatment of infections of respiratory tract caused by human metapneumovirus (hMPV), human rhinoviruses (HRV), and infection by influenza virus type A (IAV) and pharmaceutical composition comprising the anionically modified polyallylamine derivative
US-9925215-B1 · Mar 27, 2018 · US
Compositions and methods for treating hyperkalemia
US-2018064751-A1 · Mar 8, 2018 · US
Polymeric materials for capturing formaldehyde
US-2017333870-A1 · Nov 23, 2017 · US
Catalyst resin
US-9809692-B2 · Nov 7, 2017 · US
Multi-Acid Polymers and Methods of Making the Same
US-2017274369-A1 · Sep 28, 2017 · US
Sulfonated polyethylene
US-9724686-B2 · Aug 8, 2017 · US
Anionically modified polyallylamine derivative, use of anionically modified polyallylamine derivative as medicine, particularly for propylaxis and treatment of infections of respiratory tract caused by human metapneumovirus (hmpv), human rhinoviruses (hrv), and infection by influenza virus type a (iav) and pharmaceutical composition comprising the anionically modified polyallylamine derivative
US-2017216347-A1 · Aug 3, 2017 · US
Sulfonated aminomethylated chelate resins
US-2017216833-A1 · Aug 3, 2017 · US
Multi-acid polymers and methods of making the same
US-9694357-B1 · Jul 4, 2017 · US
Catalyst resin
US-2017183474-A1 · Jun 29, 2017 · US
Catalyst resin
US-2017183472-A1 · Jun 29, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08F8/36?
- CPC C08F8/36 is the Cooperative Patent Classification code for “Sulfonation; Sulfation.”
- How many patents are filed under CPC C08F8/36 (Sulfonation; Sulfation)?
- Our database includes 172 publications tagged with this CPC code.
- Is patent activity under CPC C08F8/36 growing?
- Publication counts under this code: 13 in 2024 vs 7 in 2025 (latest complete years).