Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5298578 | Use of phenothiazine derivatives to inhibit scale build up during polymerization of vinyl chloride | Paul O. Hong | 1994-03-29 |
| 5243000 | Process for making polyvinyl chloride using phenothiazine oligomer | Paul O. Hong | 1993-09-07 |
| 4960885 | Process for producing methylene bis(phenothiazines) | Paul O. Hong | 1990-10-02 |
| 4853446 | Phenothiazine composition for use in reactor scale prevention | Paul O. Hong | 1989-08-01 |
| 4203879 | Plastisol resins having improved clarity | Ronald M. Ellis, Stephen T. Fitzpatrick | 1980-05-20 |