The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 1977
Filed:
Feb. 04, 1976
Applicant:
Inventors:
Kozo Fukuba, Niihama, JA;
Minematsu Miyazaki, Niihama, JA;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428537 ; 252-81 ; 428539 ;
Abstract
A flame-resistant plaster board characterized in that the board paper constituting the outside of the plaster board contains at least one alkali compound selected from the group consisting of hydroxides and salts of alkali metals and alkaline earth metals which easily decompose or melt on heating. Said flame-resistant plaster board is improved in that the generation of smoke on heating is inhibited without reduction of the mechanical strength.