Issued Patents All Time
Showing 76–93 of 93 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5174981 | Synthesis of crystalline ZSM-5-type material | Randy F. Striebel | 1992-12-29 |
| 5175375 | Selective ortho propylation of phenol over large pore zeolite | Clarence D. Chang | 1992-12-29 |
| 5174977 | Synthesis of crystalline ZSM-5-type material | Clarence D. Chang, Randy F. Striebel | 1992-12-29 |
| 5174980 | Synthesis of crystalline ZSM-35 | Randy F. Striebel | 1992-12-29 |
| 5173282 | Synthesis of crystalline mordenite-type material | Randy F. Striebel | 1992-12-22 |
| 5143876 | Preparation of hydroxyl-rich zeolites | Clarence D. Chang | 1992-09-01 |
| 5102839 | Zeolites of increased hydrogen adsorption capacity | William S. Borghard | 1992-04-07 |
| 5072031 | Layered divalent metal phosphates containing pendent substituent groups and their preparation | — | 1991-12-10 |
| 4970397 | Method and apparatus for activating catalysts using electromagnetic radiation | Gary J. Green | 1990-11-13 |
| 4962228 | Layered divalent metal phosphates containing pendent substituent groups and their preparation | — | 1990-10-09 |
| 4870192 | Production of lactones and omega-hydroxycarboxylic acids | Clarence D. Chang | 1989-09-26 |
| 4846853 | Layered divalent metal hydrogen phosphates | Clarence D. Chang | 1989-07-11 |
| 4790928 | Catalytic conversion over dehydroxylated zeolite | Clarence D. Chang, Nai Y. Chen, Ying-Yen P. Tsao, Dennis E. Walsh | 1988-12-13 |
| 4783571 | Catalytic conversion over dehydroxylated zeolite | Clarence D. Chang, Richard F. Socha | 1988-11-08 |
| 4760154 | Synthesis of dioxane | Clarence D. Chang | 1988-07-26 |
| 4724270 | Catalytic conversion over dehydroxylated zeolite | Clarence D. Chang, Richard F. Socha | 1988-02-09 |
| 4620044 | Hydrolysis of olefin oxides to glycols | Clarence D. Chang | 1986-10-28 |
| 4578521 | Shape-selective catalytic oxidation of phenol | Clarence D. Chang | 1986-03-25 |