Takeo Hirabayashi

Follow

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Diazo copying element
- Patent number 4,416,967
- Issue date Nov 22, 1983
- Ricoh Co., Ltd.
- Tsutomu Matsuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Liquid developer for binary diazo copying materials
- Patent number 4,155,762
- Issue date May 22, 1979
- Ricoh Co., Ltd.
- Tsutomu Matsuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Diazo copying material for secondary original
- Patent number 4,119,465
- Issue date Oct 10, 1978
- Ricoh Co., Ltd.
- Tsutomu Matsuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY