Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854332 | Cigarette having thermochromogenic portions thereon | — | 1989-08-08 |
| 4835475 | Battery tester including a thermochromic material | Ryuichiro Nagaoka | 1989-05-30 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854332 | Cigarette having thermochromogenic portions thereon | — | 1989-08-08 |
| 4835475 | Battery tester including a thermochromic material | Ryuichiro Nagaoka | 1989-05-30 |