Document Type and Number:
Japanese Patent JPH0448582
Kind Code:
B2
Inventors:
OOTSUKA HIROSHI
TANAKA MASANORI
MASUMA HAJIME
ICHIMARU TAKANORI
TANAKA MASANORI
MASUMA HAJIME
ICHIMARU TAKANORI
Application Number:
JP6753286A
Publication Date:
August 07, 1992
Filing Date:
March 25, 1986
Export Citation:
Assignee:
YAMAKAWA SANGYO KK
International Classes:
B22C1/00; B22C5/00; B24B31/10
Next Patent: LIGHT MODULATING APPARATUS