Photoresist pattern trimming compositions and pattern formation methods
US-11754927-B2 · Sep 12, 2023 · US
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having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton · 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 | C07C309/28 |
| Official title | having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton |
| Display label | having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton |
| Total patents | 12 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Formulation for use with conducting polymers in solid electrolytic capacitors
US-11396594-B2 · Jul 26, 2022 · US
Polyanion Copolymers for Use with Conducting Polymers in Solid Electrolytic Capacitors
US-2021198469-A1 · Jul 1, 2021 · US
Polyanion copolymers for use with conducting polymers in solid electrolytic capacitors
US-10947376-B2 · Mar 16, 2021 · US
Photoresist pattern trimming compositions and pattern formation methods
US-2020379353-A1 · Dec 3, 2020 · US
Polyanion Copolymers for Use with Conducting Polymers in Solid Electrolytic Capacitors
US-2019267194-A1 · Aug 29, 2019 · US
Polyanion copolymers for use with conducting polymers in solid electrolytic capacitors
US-10340091-B2 · Jul 2, 2019 · US
Thermal acid generators and photoresist pattern trimming compositions and methods
US-10007179-B2 · Jun 26, 2018 · US
Polyanion Copolymers for Use with Conducting Polymers in Solid Electrolytic Capacitors
US-2017338047-A1 · Nov 23, 2017 · US
Photoresist pattern trimming compositions and methods
US-9696629-B2 · Jul 4, 2017 · US
Thermal acid generators and photoresist pattern trimming compositions and methods
US-2017123314-A1 · May 4, 2017 · US
Photoresist pattern trimming compositions and methods
US-2016187783-A1 · Jun 30, 2016 · US