Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5864638 | Image data processing using bi-level and multi-level value data | Yasuhisa Ishizawa, Hiroshi Nonoshita, Yasuhisa Shigehara, Seiji Saito, Shigeki Miura | 1999-01-26 |
| 5781666 | Image processing method and apparatus suitable for both high-resolution and low-resolution image data | Yasuhisa Ishizawa, Yoshitsugu Yamanashi, Hiroshi Nonoshita | 1998-07-14 |
| 5521990 | Image data processing using bi-level and multi-level value data | Yasuhisa Ishizawa, Hiroshi Nonoshita, Yasuhisa Shigehara, Seiji Saito, Shigeki Miura | 1996-05-28 |