-
-
-
-
-
-
Semiconductor device
-
Patent number 4,970,575
-
Issue date Nov 13, 1990
-
Hitachi, Ltd.
-
Tasao Soga
-
H01 - BASIC ELECTRIC ELEMENTS
-
-
Magnetic recording medium
-
Patent number 4,828,924
-
Issue date May 9, 1989
-
Hitachi Maxell, Ltd.
-
Mitsutoshi Shoji
-
G11 - INFORMATION STORAGE
-
-
-
-
-
Lubricant for plastic working of metals
-
Patent number 4,612,128
-
Issue date Sep 16, 1986
-
Hitachi, Ltd.
-
Takao Uematsu
-
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
-
-
-
-
-
-
-
-