Tatuya Katoh

Follow

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Electrophotographic element with carbazole-phenyhydrazone charge tr...
- Patent number 4,256,821
- Issue date Mar 17, 1981
- Ricoh Company, Ltd.
- Takamichi Enomoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotography with uniform exposure for residual potential
- Patent number 4,229,511
- Issue date Oct 21, 1980
- Ricoh Company, Ltd.
- Tatuya Katoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY