Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5646335 | Wickless temperature controlling apparatus and method for use with pore volume and surface area analyzers | Richard Alan WENMAN | 1997-07-08 |
| 5621445 | Apparatus for refilling ink cartridges | David S. Hunt, Michael L. Borer | 1997-04-15 |
| 5596358 | Method and apparatus for refilling a print cartridge having a reservoir pressure of less than ambient pressure | David S. Hunt, Joseph E. Scheffelin, Alfred Zepeda | 1997-01-21 |
| 5448275 | Thermal ink jet pen having foam controlled backpressure regulation and method of manufacture and operation | — | 1995-09-05 |
| 5325119 | Variable rate spring ink pressure regulator for a thermal ink jet printer | — | 1994-06-28 |
| 5315472 | Ground ring/spark gap ESD protection of tab circuits | William B. Reid | 1994-05-24 |
| 5280300 | Method and apparatus for replenishing an ink cartridge | David S. Hunt, Michael L. Borer | 1994-01-18 |
| 4806032 | Conical vent containing capillary bore | Brian D. Gragg, Arthur K. Wilson | 1989-02-21 |