Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10392527 | Polyvinyl alcohol and ethylene vinyl alcohol copolymer barrier coatings | Asad Aslam Khan, Safraz KHAN, Michael W. Leonard | 2019-08-27 |
| 8629081 | Time/temperature indicators | Michael W. Leonard | 2014-01-14 |
| 6599429 | Water treatment product and method | — | 2003-07-29 |
| 5858900 | Castable refractory systems | Kevin John Wills | 1999-01-12 |
| 5190909 | Record material utilizing a vinyl carbinol or derivative thereof as a chromogenic compound | Kenneth J. Shanton | 1993-03-02 |
| 4587538 | Record material | Kenneth J. Shanton | 1986-05-06 |