Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5041152 | Apparatus for bending tubular glass | Hisao Hosoya, Kazuyuki Tanaka, Youichi Iwasaki, Morio Tominaga | 1991-08-20 |
| 4590976 | Exhaust apparatus for electric lamps | Kazuyuki Tanaka | 1986-05-27 |