Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6768006 | Phthalocyanine crystal, production process therefor, and electrophotographic photosensitive member, process cartridge and apparatus using the crystal | Masato Tanaka, Hidetoshi Hirano, Kan Tanabe, Atsushi Fujii | 2004-07-27 |
| 6465143 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Masato Tanaka, Hideki Anayama, Hidetoshi Hirano, Kan Tanabe, Atsushi Fujii | 2002-10-15 |
| 6447967 | Phthalocyanine crystal, production process therefor, and electrophotographic photosensitive member, process cartridge and apparatus using the crystal | Masato Tanaka, Hidetoshi Hirano, Kan Tanabe, Atsushi Fujii | 2002-09-10 |