Keiji Miyajima

Follow

Person

Kashiwa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method of preventing color accurate reproductions using color photo...
- Patent number 4,325,981
- Issue date Apr 20, 1982
- Toppan Printing Co., Ltd.
- Takeo Sugiura
- G07 - CHECKING-DEVICES
Information Patent Grant
Forgery resistant document with colored areas and method for thwart...
- Patent number 4,277,514
- Issue date Jul 7, 1981
- Toppan Printing Co., Ltd.
- Takeo Sugiura
- G07 - CHECKING-DEVICES
Information Patent Grant
Method of fabricating a phosphor screen of a color television pictu...
- Patent number 4,209,551
- Issue date Jun 24, 1980
- Toppan Printing Co., Ltd.
- Tatsuo Masaki
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS