Harpel; William L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Harpel; William L..The latest application filed is for "low phosphorous, low etch cleaner and method".
- Harpel; William L. - Langhorne PA
| Patent | Date |
|---|---|
| Low phosphorous, low etch cleaner and method Grant 5,472,630 - Ouyang , et al. December 5, 1 | 1995-12-05 |
| Composition for a method of monitoring dried-in-place non-chrome polyacrylamide based treatments for metals Grant 5,451,270 - Ouyang , et al. * September 19, 1 | 1995-09-19 |
| Low foaming alkaline cleaner comprising a surfactant mixture of an EO-PO-EO block copolymer and a PO-ZO-PO block copolymer Grant 5,114,607 - Deck , et al. May 19, 1 | 1992-05-19 |
| Paint spray booth detackification composition and method Grant 4,504,395 - Harpel , et al. March 12, 1 | 1985-03-12 |
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