Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6691765 | Products for the manufacture of molds and cores used in metal casting and a method for their manufacture and recycle from crushed rock | Robert E. Sparks | 2004-02-17 |
| 5454966 | Stabilized chlorine-containing refrigeration compositions | Raymond H. Thomas, Ruth H. Chen | 1995-10-03 |
| 5380449 | Stabilized dichlorotrifluoroethane refrigeration compositions | Raymond H. Thomas, Ruth H. Chen | 1995-01-10 |
| 5156768 | Stabilized chlorine-containing refrigeration compositions | Raymond H. Thomas, Ruth H. Chen | 1992-10-20 |