Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5565180 | Method of treating gases | — | 1996-10-15 |
| 5439509 | Stripping method and apparatus | Kim Nguyen | 1995-08-08 |
| 5364604 | Solute gas-absorbing procedure | Kim Nguyen | 1994-11-15 |
| 5362464 | Method for removing sulfur oxides | J. Stuart Burgess, Jerry Y. Stein | 1994-11-08 |
| RE34586 | Spray nozzle design | Edward F. Spink | 1994-04-19 |
| 5192517 | Gas reacting method | — | 1993-03-09 |
| 5170942 | Spray nozzle design | Gordon P. Janes | 1992-12-15 |
| 5114460 | Production of low-chloride alkali metal phosphates | Kim Nguyen | 1992-05-19 |
| 5055124 | Production of low-chloride fertilizers | Kim Nguyen | 1991-10-08 |
| 5028410 | Hydrometallurgical production of zinc oxide from roasted zinc concentrates | Murry C. Robinson, Kim Nguyen | 1991-07-02 |
| 5025989 | Spray nozzle design | Edward F. Spink | 1991-06-25 |
| 5023064 | Method for removing sulfur oxide | J. Stuart Burgess, Jerry Y. Stein | 1991-06-11 |
| 5017346 | Process for treating zinc oxide bearing materials | Murry C. Robinson, Kim Nguyen | 1991-05-21 |
| 4963329 | Gas reacting apparatus and method | J. Stuart Burgess, Jerry Y. Stein | 1990-10-16 |
| 4950313 | Fine dust removal device | Francis A. L. Dullien, Wendy Mortimer | 1990-08-21 |
| 4893752 | Spray nozzle design | Edward F. Spink | 1990-01-16 |
| 4889694 | Recovery of zinc values from zinc and iron-bearing sulfide materials | Jerry Y. Stein | 1989-12-26 |
| 4865817 | Gas reacting apparatus | J. Stuart Burgess, Jerry Y. Stein | 1989-09-12 |
| 4778520 | Process for leaching zinc from partially desulfurized zinc concentrates by sulfuric acid | Jerry Y. Stein | 1988-10-18 |