Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876681 | Packet switching equipment and a packet switching method for controlling packet switched networks | Masayoshi Hagiwara, Ryoichi Sasaki, Minoru Sugano, Akira Horiki, Kazuyuki Hayashi | 1989-10-24 |
| 4835317 | 4-tert.-butyl-1,2-benzenedithiol, complex compounds derived therefrom, and a method of producing the same | Masao Kawamura, Kunioki Kato, Masahide Takahashi, Tsuyoshi Morishita, Kazuyuki Nakayama +1 more | 1989-05-30 |