Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9154802 | Emergable watermark superimposing method, emergable watermark superimposing apparatus, and emergable watermark superimposing system | Takaaki Yamada, Yuzo Oshida | 2015-10-06 |
| 8938088 | Method and apparatus for classifying sections of an image into a plurality of embedded areas | Takaaki Yamada, Yuzo Oshida | 2015-01-20 |
| 6024922 | Method of controlling an oxygen analyzer of the Hersch galvanic type | Yoshiro Matsumoto | 2000-02-15 |
| 4927229 | Optical cable coupling adapter | Toshimi Nagaishi, Mituyoshi Suzuki | 1990-05-22 |
| 4726646 | Optical switch | Sadakazu Ariga, Mituyosi Suzuki, Ayako Sakamoto | 1988-02-23 |