Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6251618 | Color developing method, enzyme immunoassay using the color developing method, and immunochromatography incorporating the enzyme immunoassay | Masami Sugiyama, Yoshihiro Ashihara | 2001-06-26 |
| 5998156 | Color developing method, enzyme immunoassay using the color developing method, and immunochromatography incorporating the enzyme immunoassay | Masami Sugiyama, Yoshihiro Ashihara | 1999-12-07 |
| D293317 | Digital telephone and data exchange equipment cabinet | Mitsuhiro Umezu, Tooru Nakajima, Hiroshi Kikkawa | 1987-12-22 |