Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853466 | Water-soluble disazo reactive dyes and metals complexes (containing phosphonic acid groups) for dyeing cellulosic fibers | — | 1989-08-01 |
| 4851158 | N-alkyl-N-(aminophenylsulfonyl)-aminoalkylphosphonic acids | — | 1989-07-25 |
| 4851516 | Dyes from diazotized sulfonylaminoalkylphosphonic acids and naphtholdisulfonic acids | — | 1989-07-25 |
| 4830788 | Process for preparation of substituted-aminomethylphosphonic acids | — | 1989-05-16 |