Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4367172 | Disazo dyes containing at least one sulfo group and at least two basic or cationic groups | — | 1983-01-04 |
| 4363761 | Monoazo dyes containing at least one sulfo group and at least two basic or cationic groups | — | 1982-12-14 |
| 4273707 | Monoazo and disazo dyes containing at least one sulfo group and at least two basic or cationic groups | — | 1981-06-16 |