Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4810326 | Interlaminate adhesion between polymeric materials and electrolytic copper surfaces | Vu Q. Bui, Joseph G. Hoffarth, John A. Welsh | 1989-03-07 |
| 4735820 | Removal of residual catalyst from a dielectric substrate | Peter A. Agostino, Joseph G. Hoffarth | 1988-04-05 |
| 4718972 | Method of removing seed particles from circuit board substrate surface | William F. Herrmann, Joseph G. Hoffarth, Voya R. Markovich, Robert T. Wiley | 1988-01-12 |
| 4618477 | Uniform plasma for drill smear removal reactor | Ronald S. Horwath, Neng-Hsing Lu, John A. Welsh | 1986-10-21 |
| 4599134 | Plasma etching with tracer | Joseph G. Hoffarth, John A. Welsh | 1986-07-08 |