Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888704 | Advanced control strategies for melt flow rate and reactor concentration in the polypropylene slurry process | Robert Topliss, Norman F. Brockmeier | 1989-12-19 |
| 4835307 | Method and apparatus for controlling the manufacture of terephthalic acid to control the level and variability of the contaminant content and the optical density | Kenneth J. Abrams, Leonard E. Stark, Martin A. Zeitlin | 1989-05-30 |