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:
Jan. 23, 1990
Filed:
Mar. 02, 1989
Applicant:
Inventor:
Roger A Crawford, Wadsworth, OH (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428331 ; 1621644 ; 1621814 ; 1621817 ; 162D / ; 428328 ; 428528 ; 428530 ; 4285375 ;
Abstract
Described is a titanium dioxide-containing resin saturable paper sheet in which from about 5 to about 40 weight percent of the titanium dioxide filler is replaced with amorphous precipitated silica having an essentially neutral to slightly alkaline, e.g., 6.5 to 8.5, pH and a medium agglomerate particle size of less than 30 micrometers, e.g., 3 to 10 micrometers. The BET surface area of the silica may vary from about 25 to about 200 m.sup.2 /g, e.g., 50 to 100 m.sup.2 /g. Also described are decorative laminates in which the core of the laminate contains at least one of such saturable paper sheets.