Tozawa; Katsutoshi
Patent Applications and Registrations
Patent applications and USPTO patent grants for Tozawa; Katsutoshi.The latest application filed is for "speaker system and a method for improving sound quality thereof".
- Tozawa; Katsutoshi - Fuchu-shi Tokyo 183 JP
- Tozawa; Katsutoshi - Sakura-machi Hino City JP
| Patent | Date |
|---|---|
| Speaker system and a method for improving sound quality thereof Grant RE39,330 - Tozawa October 10, 2 | 2006-10-10 |
| Speaker system and a method for improving sound quality thereof Grant 6,320,971 - Tozawa November 20, 2 | 2001-11-20 |
| Magnetic toner for electrophotography Grant 4,137,188 - Uetake , et al. January 30, 1 | 1979-01-30 |
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