Method for producing low-halogen polybiphenylsulfone polymers
US-9469732-B2 · Oct 18, 2016 · US
Polyethersulfones
Polyethersulfones · 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 | C08G75/23 |
| Official title | Polyethersulfones |
| Display label | Polyethersulfones |
| Total patents | 438 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 36 |
| 2016 | 32 |
| 2017 | 36 |
| 2018 | 35 |
| 2019 | 51 |
| 2020 | 49 |
| 2021 | 47 |
| 2022 | 45 |
| 2023 | 29 |
| 2024 | 39 |
| 2025 | 31 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Poly(ether sulfone)s and poly(ether amide sulfone)s and methods of their preparation
US-2016251480-A1 · Sep 1, 2016 · US
Hexahydrotriazine, dithiazine, and thioether functionalized materials
US-9422378-B2 · Aug 23, 2016 · US
Aromatic polyethersulfone microparticles having narrow particle diameter distribution index
US-9410004-B2 · Aug 9, 2016 · US
Polyarylene ether sulfone-polymers for membrane applications
US-2016214068-A1 · Jul 28, 2016 · US
Division of a polyarylene ether solution
US-2016215105-A1 · Jul 28, 2016 · US
Hydrophilic block copolymers and membranes prepared therefrom (I)
US-9394407-B2 · Jul 19, 2016 · US
Poly(ether sulfone)s and poly(ether amide sulfone)s and methods of their preparation
US-9371431-B2 · Jun 21, 2016 · US
Method for producing low-chlorine polybiphenyl sulfone polymers
US-9365680-B2 · Jun 14, 2016 · US
Division of a polyarylene ether solution
US-2016159990-A1 · Jun 9, 2016 · US
Polyarylethersulfone Oil and Gas Recovery Articles, Method of Preparation and Method of Use
US-2016159986-A1 · Jun 9, 2016 · US
Polyarylether sulfone polymers (p) with a reduced solvent content
US-2016152776-A1 · Jun 2, 2016 · US
Process for making polyarylethers and use in membrane preparation
US-9353220-B2 · May 31, 2016 · US
Improved membranes
US-2016114296-A1 · Apr 28, 2016 · US
Block copolymers
US-2016108178-A1 · Apr 21, 2016 · US
Hexahydrotriazine, dithiazine, and thioether functionalized materials
US-2016102160-A1 · Apr 14, 2016 · US
Polyarylene ether sulfone (PAES) polymers
US-2016090450-A1 · Mar 31, 2016 · US
Polyarylene ether sulfone (PAES) compositions
US-2016083523-A1 · Mar 24, 2016 · US
Polyarylethersulfone copolymers
US-2016075833-A1 · Mar 17, 2016 · US
Highly basic ionomers and membranes and anion/hydroxide exchange fuel cells comprising the ionomers and membranes
US-9263757-B2 · Feb 16, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08G75/23?
- CPC C08G75/23 is the Cooperative Patent Classification code for “Polyethersulfones.”
- How many patents are filed under CPC C08G75/23 (Polyethersulfones)?
- Our database includes 438 publications tagged with this CPC code.
- Is patent activity under CPC C08G75/23 growing?
- Publication counts under this code: 39 in 2024 vs 31 in 2025 (latest complete years).