Persichini; David W.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Persichini; David W..The latest application filed is for "separation and purification of fluoride from industrial wastes".
- Persichini; David W. - State College CA
- Persichini; David W. - Oceanside CA
| Patent | Date |
|---|---|
| Separation and purification of fluoride from industrial wastes Grant 5,876,685 - Krulik , et al. March 2, 1 | 1999-03-02 |
| Apparatus for the continuous on-site chemical reprocessing of ultrapure liquids Grant 5,354,428 - Clark , et al. October 11, 1 | 1994-10-11 |
| Method for making ultrapure sulfuric acid Grant 5,164,049 - Clark , et al. November 17, 1 | 1992-11-17 |
| Method and apparatus for the continuous on-site chemical reprocessing of ultrapure liquids used in semiconductor wafer cleaning Grant 4,855,023 - Clark , et al. August 8, 1 | 1989-08-08 |
| Method and apparatus for the continuous on-site chemical reprocessing of ultrapure liquids Grant 4,828,660 - Clark , et al. May 9, 1 | 1989-05-09 |
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