Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877141 | Pressure resistant bottle-shaped container | Takeshi Itakura, Toyoji Kato, Yukio Koshidaka | 1989-10-31 |
| 4833123 | Yellow dye-donor element used in thermal transfer and thermal transfer and thermal transfer sheet using it | Kiyoyasu Hashimoto, Takashi Omura, Yasuyuki Suzuki | 1989-05-23 |
| 4804417 | Process for producing dioxazine violet pigment | Taira Fujita, Hiroshi Okayasu | 1989-02-14 |