Cationic surface sizing agent
US-10907307-B2 · Feb 2, 2021 · US
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Anhydrides
Anhydrides · 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 | C08F220/66 |
| Official title | Anhydrides |
| Display label | Anhydrides |
| Total patents | 6 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 2 |
| 2019 | 1 |
| 2021 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cationic surface sizing agent
US-2019003124-A1 · Jan 3, 2019 · US
Cyanoacrylate compositions
US-9783714-B2 · Oct 10, 2017 · US
Thiosulfate polymer compositions and articles
US-9772552-B2 · Sep 26, 2017 · US
Thermally expandable microcapsule
US-9504980-B2 · Nov 29, 2016 · US
Thiosulfate polymers
US-9499650-B2 · Nov 22, 2016 · US