Katsutoshi Tozawa

Follow

Person

Sakura-machi, Hino City, Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Speaker system and a method for improving sound quality thereof
- Patent number 6,320,971
- Issue date Nov 20, 2001
- Katsutoshi Tozawa
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Magnetic toner for developing latent electrostatic images and a pro...
- Patent number 4,230,787
- Issue date Oct 28, 1980
- Konishiroku Photo Industry Co., Ltd.
- Shotaro Watanabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developer for latent electrostatic image and process for preparatio...
- Patent number 4,164,476
- Issue date Aug 14, 1979
- Konishiroku Photo Industry Co. Ltd.
- Shotaro Watanabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Magnetic toner for electrophotography
- Patent number 4,137,188
- Issue date Jan 30, 1979
- Shigeru Uetake
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY