Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890135 | Photoconductive drum cleaning apparatus | Tatsu Hori, Norman F. Mangal | 1989-12-26 |
| RE31964 | Automatic development electrode bias control system | Louis F. Schaefer | 1985-08-06 |
| 4325627 | Method and apparatus for liquid-developing latent electrostatic images | Ronald Swidler | 1982-04-20 |
| 4318002 | Method of charging a multilayered apertured element in an electrostatic imaging process | Gerald L. Pressman | 1982-03-02 |
| 4286039 | Method and apparatus for removing excess developing liquid from photoconductive surfaces | Benzion Landa, Ronald Swidler | 1981-08-25 |
| RE30477 | Electrophotographic liquid developing system | Louis F. Schaefer | 1981-01-13 |
| 4181094 | Excess developer removal apparatus | — | 1980-01-01 |
| 4181423 | Electrostatic color printing systems and methods using modulated ion streams | Gerald L. Pressman | 1980-01-01 |