Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870221 | Oil-filled capacitor | Atsushi Sato, Keiji Endo, Hideyuki Dohi | 1989-09-26 |
| 4804729 | Electrical insulating material and power cable comprising a crosslinked layer thereof | Yuichi Orikasa, Shinji Kojima, Takashi Inoue, Atsushi Sato, Kaoru Yamamoto | 1989-02-14 |
| 4803238 | Polymer composition | Atsushi Sato, Keiji Endo, Eiichi Matsuzaka, Satoshi Narui | 1989-02-07 |
| 4802058 | Novel method for refining electrical insulating oil | Keiji Endo, Hideyuki Dohi, Atsushi Sato | 1989-01-31 |