| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 14 |
| # | Industry | |
|---|---|---|
| #1 | Organic fine chemistry | |
| #2 | Measurement | |
| #3 | Basic materials chemistry | |
| #4 | Chemical engineering | |
| #5 | Macromolecular chemistry and polymers |
| # | Technology | |
|---|---|---|
| #1 | Acyclic or carbocyclic compounds | |
| #2 | Analysing materials | |
| #3 | Pigments | |
| #4 | Special macromolecular compounds | |
| #5 | Heterocyclic compounds | |
| #6 | Mixing | |
| #7 | Chemical or physical processes |
| Publication | Filing date | Title |
|---|---|---|
| FR2082822A5 | Pyromellitic dianhydride prepn - from durene by catalytic oxidation | |
| FR2037594A5 | Purification of phthal ocyanine pigments | |
| FR2026488A1 | Polyester prodn | |
| FR2015212A1 | Sulphonane derivs of aromatic carboxylic acids,converting s - groups to sulphonanes and keeping free carboxylic groups |