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. 26, 1993
Filed:
Sep. 23, 1991
Applicant:
Inventors:
Kozo Kotani, Toyonaka, JP;
Hideo Negawa, Shiga, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01G / ;
U.S. Cl.
CPC ...
428218 ; 241 21 ; 428220 ; 428331 ; 428334 ; 428516 ; 428518 ; 428520 ; 428522 ; 428523 ;
Abstract
Disclosed is an infrared absorbing film comprising a synthetic resin and silicon oxide, wherein the silicon oxide is used in an amount of about 2 to about 25% by weight based on the synthetic resin, and wherein the silicon oxide is produced by underwater grinding, has an average particle size of not more than 4 .mu.m, is substantially free of particles exceeding 20 .mu.m in average particle size, and has a specific surface area of not more than 20 m.sup.2 /g. The film may further comprise a transparent resin layer formed over at least one surface thereof.