Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5093220 | Electrostatic latent image developer | Meizo Shirose, Michiaki Ishikawa, Hiroyuki Takagiwa | 1992-03-03 |
| 5026620 | Method for forming electrophotographic images | Hiroyuki Takagiwa, Meizo Shirose, Michiaki Ishikawa | 1991-06-25 |
| 5021317 | Electrostatic latent image developer with toner particles surface treated with a polysiloxane having ammonium salt functional groups | Akitoshi Matsubara, Jiro Takahashi, Hiroyuki Takagiwa | 1991-06-04 |
| 4960664 | Developer composition for developing electrostatic image and toner image forming process | Hiroyuki Yamada, Hiroyuki Takagiwa, Takahira Kasuya, Jiro Takahashi, Masafumi Uchida +1 more | 1990-10-02 |
| 4943507 | Toner for developing electrostatic latent image and method for developing electrostatic latent image with the same | Jiro Takahashi, Kenzi Tsuzita, Hiroyuki Takagiwa, Kunio Shigeta | 1990-07-24 |