Title:
MATERIAL FOR ACOUSTIC APPARATUS
Document Type and Number:
Japanese Patent JPS5269305
Kind Code:
A
Abstract:
PURPOSE: A speaker box having arbitrary resonance sharpness, bulk density, Young's modulus is obtained by using high-temperature high-pressure steam-cured lightweight concrete containing styrene-butadiene copolymer latex solids.
Inventors:
KAZUCHI EIJI
DOI ICHIROU
MATSUNAGA ICHIROU
KUBOTA HIROKIYO
CHIYATANI IKUO
UGACHI MASAKATA
DOI ICHIROU
MATSUNAGA ICHIROU
KUBOTA HIROKIYO
CHIYATANI IKUO
UGACHI MASAKATA
Application Number:
JP14562775A
Publication Date:
June 09, 1977
Filing Date:
December 05, 1975
Export Citation:
Assignee:
SONY CORP
SUMITOMO METAL MINING CO
SUMITOMO METAL MINING CO
International Classes:
H04R1/02; G11B3/60; G11B33/02; (IPC1-7): G11B1/00; H04R1/02