Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889567 | High strength and high toughness steel bar, rod and wire and the process of producing the same | Tadayoshi Fujiwara, Yukio Yamaoka, Kazuichi Hamada, Yoshiro Yamada, Yasunobu Kawaguchi +2 more | 1989-12-26 |
| 4866655 | Arithmetic processor and divider using redundant signed digit | Tamotsu Nishiyama, Shigeo Kuninobu, Naofumi Takagi | 1989-09-12 |
| 4866657 | Adder circuitry utilizing redundant signed digit operands | Tamotsu Nishiyama, Shigeo Kuninobu, Naofumi Takagi | 1989-09-12 |
| 4864528 | Arithmetic processor and multiplier using redundant signed digit arithmetic | Tamotsu Nishiyama, Shigeo Kuninobu, Naofumi Takagi | 1989-09-05 |
| 4835023 | Ornamental articles having coating membrane | Hiroshi Hosono, Itaru Nakamura | 1989-05-30 |
| 4831805 | Precast concrete board fixing metal fitting | Mitsuo Noborisaka, Masashi Noborisaka, Toshiaki Fukagai, Shinji Tanaka, Yuuji Satou +2 more | 1989-05-23 |