Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5912385 | Process for the production of pure alkanesulfonic acids | Kazuyoshi Kushibe, Hiromitsu Kobayashi, Hirohisa Nitoh | 1999-06-15 |
| 4382147 | Process for isolating 4,4-dihydroxydiphenyl sulfone from a mixture of dihydroxydiphenylsulfone isomers | Yasumasa Shimizu, Osami Ohura | 1983-05-03 |