Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4257935 | Color developing sheet for pressure-sensitive recording systems | Sadao Sekiguchi, Kojiro Matsumoto, Tetsuo Ishikawa, Saburo Mishiba | 1981-03-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4257935 | Color developing sheet for pressure-sensitive recording systems | Sadao Sekiguchi, Kojiro Matsumoto, Tetsuo Ishikawa, Saburo Mishiba | 1981-03-24 |