Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5932992 | Method for energizing energization-operated toy element and energization-operated toy | Tsutomu Tomatsu, Naomasa Miyashita, Nobuaki Matsunami, Tsutomu Kito | 1999-08-03 |
| 5895718 | Thermoplastic resin compositions and temperature-dependent shape-transformable/fixable products making use of the same | Naoya Ishimura, Kuniyuki Senga, Tsutomu Tomatsu | 1999-04-20 |
| 5716253 | Thermally color-changeable toy | Tadashi Aoki, Tsutomu Tomatsu, Naomasa Miyashita, Tsutomu Kito | 1998-02-10 |
| 5316513 | Electrothermal color-varying device and toy utilizing the same | Tanehiro Nakagawa, Yoshiaki Ono, Tsutomu Tomatsu, Takeo Yamaguchi, Toshiaki Tanaka | 1994-05-31 |