Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4282404 | Synthetic-speech calculators | Akira Tanimoto, Sigeaki Masuzawa, Shinya Shibata | 1981-08-04 |
| 4276444 | Synthetic-speech calculators | Akira Tanimoto, Sigeaki Masuzawa, Shinya Shibata | 1981-06-30 |
| 4211892 | Synthetic-speech calculators | Akira Tanimoto, Sigeaki Masuzawa, Shinya Shibata | 1980-07-08 |
| 4185169 | Synthetic-speech calculators | Akira Tanimoto, Sigeaki Masuzawa, Shinya Shibata | 1980-01-22 |