Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5227040 | High performance bipolar membranes | — | 1993-07-13 |
| 4912942 | Refrigerator cabinet and door construction | Glenn E. Katterhenry, John P. Keil | 1990-04-03 |
| 4617157 | Fragrance dispenser for room air conditioner | Ray J. Stein | 1986-10-14 |