Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5354428 | Apparatus for the continuous on-site chemical reprocessing of ultrapure liquids | R. Scot Clark, Joe G. Hoffman, David W. Persichini, Wallace I. Yuan, Bruce A. Lipisko +2 more | 1994-10-11 |
| 5164049 | Method for making ultrapure sulfuric acid | R. Scot Clark, David W. Persichini, Wallace I. Yuan, Bruce A. Lipisko, Alan W. Jones +2 more | 1992-11-17 |
| 4952386 | Method and apparatus for purifying hydrogen fluoride | Chung-Tseng Hsu | 1990-08-28 |
| 4855023 | Method and apparatus for the continuous on-site chemical reprocessing of ultrapure liquids used in semiconductor wafer cleaning | R. Scot Clark, Joe G. Hoffman, Alan W. Jones, Allen H. Jones, Jr., David W. Persichini +2 more | 1989-08-08 |
| 4828660 | Method and apparatus for the continuous on-site chemical reprocessing of ultrapure liquids | R. Scot Clark, Joe G. Hoffman, Alan W. Jones, Allen H. Jones, Jr., David W. Persichini +2 more | 1989-05-09 |
| 4762601 | Copper bath for electroless plating having excess counter-cation and process using same | Gerald A. Krulik, Stephen C. Davis | 1988-08-09 |
| 4499025 | Electrochemical maintenance of catalyst activity | Raymond J. Jasinski, Pamela J. Peerce-Landers | 1985-02-12 |
| 4430176 | Electrolytic process for producing hydrogen peroxide | — | 1984-02-07 |