Wasaburo Ohta

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Tokyo, JA

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Patents Grantslast 30 patents

Information Patent Grant
Electrostatic copying machine
- Patent number 4,084,899
- Issue date Apr 18, 1978
- Ricoh Company, Ltd.
- Tsutomu Ishida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method for forming a transparent protective coating on a photograph...
- Patent number 4,060,441
- Issue date Nov 29, 1977
- Kabushiki Kaisha Ricoh
- Wasaburo Ohta
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Inorganic photoconductor in glass binds with glass overcoat layer
- Patent number 4,015,984
- Issue date Apr 5, 1977
- Kabushiki Kaisha Ricoh
- Wasaburo Ohta
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY