Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5486933 | Monochromatic-light reproduction type hologram, and method and apparatus for its image reproduction | Naoaki Shindo, Nagahisa Matsudaira, Akihiko Kobayashi, Yoshiaki Tada, Takashi Sato +1 more | 1996-01-23 |
| 5291027 | Optical identification multiple diffraction grating mark member and card using the same | Akihiko Kobayashi, Susumu Takahashi, Toshiki Toda | 1994-03-01 |