Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5718874 | Solvent extraction method of separating ferric chloride from nickel chloride | Barry Michael Cushman | 1998-02-17 |
| 5477285 | CRT developing apparatus | George Herbert Needham Riddle, Pabitra Datta, Ronald N. Friel, Dennis R. McCarthy, Eugene S. Poliniak +5 more | 1995-12-19 |
| 5474867 | Method of manufacturing a luminescent screen for a CRT under ambient controls | Peter M. Ritt, Charles M. Wetzel, Harry R. Stork | 1995-12-12 |
| 5340674 | Method of electrophotographically manufacturing a screen assembly for a cathode-ray tube with a subsequently formed matrix | George M. Ehemann, Jr. | 1994-08-23 |
| 4669871 | Photographic printing plate and method of exposing a coated sheet using same | Charles M. Wetzel, Thomas J. Michielutti, Dean T. Deibler | 1987-06-02 |
| 4664996 | Method for etching a flat apertured mask for use in a cathode-ray tube | Thomas J. Michielutti, Charles M. Wetzel | 1987-05-12 |
| 4656107 | Photographic printing plate for use in a vacuum printing frame | Thomas J. Michielutti, Charles M. Wetzel | 1987-04-07 |
| 4600470 | Method for etching small-ratio apertures into a strip of carbon steel | Richard B. Maynard, Margaret Saunders | 1986-07-15 |
| 4588676 | Photoexposing a photoresist-coated sheet in a vacuum printing frame | Thomas J. Michielutti, Charles M. Wetzel | 1986-05-13 |
| 4482426 | Method for etching apertures into a strip of nickel-iron alloy | Richard B. Maynard, Margaret Saunders | 1984-11-13 |