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:
Oct. 25, 1988
Filed:
Dec. 15, 1987
Applicant:
Inventors:
Assignees:
Onoda Cement Co. Ltd., Ymaguchiken, JP;
Meisei Chemical Works Ltd., Kyototu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
162145 ; 162146 ; 162158 ; 162159 ; 1621814 ; 1621816 ;
Abstract
A nonflammable paper having a sufficient yield at the time of paper-making and a sufficient non-combustibility and strength even in a basis weight as low as 100 g/m.sup.2 or less is provided, which paper is obtained by dispersing in water a composition comprising 40 to 95% by weight of calcium silicate in the form of needle, plate, thin film or a secondary aggregate thereof, and aluminum hydroxide powder, in a specified ratio by weight, 5 to 30% by weight of cellulose fibers and 0 to 30% by weight of other additives, the total weight of these components being 100% by weight, followed by subjecting the dispersion to paper-making.