C08G 2261/722
Sulfonation
C08G2261/722 (Sulfonation) appears on 22 US grants and 28 published applications in this corpus.
Search patents in C08G- Granted patents
- 22
- Published applications
- 28
- Assignees
- 27
- Inventors
- 59
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 2 | 4 |
| 2012 | 3 | 2 |
| 2013 | 2 | 1 |
| 2014 | 0 | 3 |
| 2015 | 2 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 2 |
| 2018 | 3 | 4 |
| 2019 | 2 | 2 |
| 2020 | 1 | 0 |
| 2021 | 3 | 2 |
| 2022 | 2 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 2 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Fluorine-containing compound having sulfonic acid group and polymer electrolyte fuel cell25 Aug 2026US 12,719,070 B2Nissan Chemical Corporation
- High polymer, mixture containing same, composition, organic electronic component, and monomer for polymerization27 Sep 2022US 11,453,745 B2Guangzhou Chinaray Optoelectronic Materials Ltd.
- Polyphenylene compound26 Apr 2022US 11,312,818 B2Nissan Chemical Corporation
- Control of polymer architectures by living ring-opening metathesis copolymerization6 Jul 2021US 11,053,356 B2California Institute of Technology
- Azide-modified olefin as polymeric coupling agent8 Jun 2021US 11,028,193 B2Braskem America, Inc.
- Nitrogen-containing compounds and preparation method thereof, anionic resin, and anionic exchange membrane31 Jul 2025US 2025/0243309 A1EVE Hydrogen Energy Co., LTD.
- Fluorine-containing compound having sulfonic acid group and polymer electrolyte fuel cell27 Jun 2024US 2024/0213508 A1Nissan Chemical Corporation
- Glassy organic framework ion-conductive membranes15 Feb 2024US 2024/0055638 A1
- Control of polymer architectures by living ring-opening metathesis copolymerization23 Dec 2021US 2021/0395463 A1California Institute of Technology
- Polyphenylene compound25 Feb 2021US 2021/0054138 A1Nissan Chemical Corporation
Most cited
By later US patents
- Poly(phenylene)-based anion exchange polymers and methods thereof16US 10,370,483 B2National Technology & Engineering Solutions of Sandia, LLC · 2019
- Poly(phenylene)-based anion exchange polymers and methods thereof13US 10,053,535 B2Los Alamos National Security, LLC · 2018
- Functionalization of Diels-Alder polyphenylene polymers12US 10,053,534 B2National Technology & Engineering Solutions of Sandia, LLC · 2018
- Sulfonation of conducting polymers and OLED, photovoltaic, and ESD devices6US 8,017,241 B2Plextronics, Inc. · 2011
- Electrically conductive films formed from dispersions comprising polythiophenes and ether containing polymers6US 8,268,195 B2Air Products and Chemicals, Inc. · 2012