Issued Patents 1989
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883420 | Die for extruding honeycomb structural bodies | Sei Ozaki, Shoji Futamura | 1989-11-28 |
| 4875264 | Method for producing dies for extruding honeycomb structures | Shoji Futamura | 1989-10-24 |
| 4834640 | Extrusion-forming jig | Mitsuaki Watanabe | 1989-05-30 |
| 4830598 | Dies for extruding honeycomb structure | Shoji Futamura | 1989-05-16 |
| 4826747 | Electrophotographic method uses toner of special size relative to exposure light beam | Shunichi Chiba | 1989-05-02 |
| 4822707 | Positively chargeable toners for use in dry type electrophotography comprising a blue dye lake charge control agent | Akio Matsui | 1989-04-18 |
| 4820146 | Super hard alloy dies for extruding honeycomb structures | Shoji Futamura | 1989-04-11 |
| 4814187 | Honeycomb structural body-extruding die apparatus | Kozo Higashizima | 1989-03-21 |