Ohsaka; Sigeo
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ohsaka; Sigeo.The latest application filed is for "optical film, an antireflection film, a reflection film, a method for forming the optical film, the antireflection film or the reflection film and an optical device".
- Ohsaka; Sigeo - Kawasaki JP
| Patent | Date |
|---|---|
| Optical film, an antireflection film, a reflection film, a method for forming the optical film, the antireflection film or the reflection film and an optical device Grant 5,777,792 - Okada , et al. July 7, 1 | 1998-07-07 |
| Semiconductor light emitting device Grant 4,360,919 - Fujiwara , et al. November 23, 1 | 1982-11-23 |
| Method for producing a semiconductor laser element Grant 4,306,351 - Ohsaka , et al. December 22, 1 | 1981-12-22 |
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