Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6455125 | Method of manufacturing a paper core material having a design of continuously geometric pattern and the paper core material manufactured by the method | — | 2002-09-24 |
| 6187702 | Ophthalmic and optical glasses | — | 2001-02-13 |
| 5952256 | Optical glass having a negative anomalous dispersion | Masahiro Onozawa | 1999-09-14 |
| 5858898 | Optical glass having a negative anomalous dispersion | Muneo Nakahara | 1999-01-12 |