Kakuta; Rin-ichi
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kakuta; Rin-ichi.The latest application filed is for "optical element substrate".
- Kakuta; Rin-ichi - Tokyo JP
| Patent | Date |
|---|---|
| Optical element substrate Grant 5,198,305 - Wada , et al. March 30, 1 | 1993-03-30 |
| Random copolymer containing hexagonal imide units, a process for producing the same, and an optical disc substrate made of the random copolymer Grant 4,820,778 - Ohtani , et al. April 11, 1 | 1989-04-11 |
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