Method for producing organic substance and apparatus for producing organic substance
US-12378487-B2 · Aug 5, 2025 · US
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by distillation
by distillation · 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 | C07C27/28 |
| Official title | by distillation |
| Display label | by distillation |
| 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 |
|---|---|
| 2015 | 3 |
| 2016 | 1 |
| 2023 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing organic substance and apparatus for producing organic substance
US-2023050575-A1 · Feb 16, 2023 · US
Polybenzoxazole membranes from self-cross-linkable aromatic polyimide membranes
US-9308503-B2 · Apr 12, 2016 · US
Polybenzoxazole membranes from self-cross-linkable aromatic polyimide membranes
US-2015328596-A1 · Nov 19, 2015 · US
Polybenzoxazole membranes from self-cross-linkable aromatic polyimide membranes
US-9126152-B2 · Sep 8, 2015 · US
Polybenzoxazole membranes from self-cross-linkable aromatic polyimide membranes
US-2015094500-A1 · Apr 2, 2015 · US