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:
Sep. 21, 2004
Filed:
May. 28, 1999
Applicant:
Inventors:
Assignee:
Lintec Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09J 7/02 ; H01L 2/1304 ;
U.S. Cl.
CPC ...
C09J 7/02 ; H01L 2/1304 ;
Abstract
The invention is concerned with a pressure sensitive adhesive sheet comprising a substrate and, superimposed thereon, a pressure sensitive adhesive layer, said substrate exhibiting a maximum value of dynamic viscoelasticity tan &dgr; of at least 0.5 at a temperature ranging from −5 to 80° C. At the time of working of the back of an adherend having a surface whose irregular height differences are large, this pressure sensitive adhesive sheet is preferably stuck to the adherend surface to thereby protect it during the working.