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:
May. 13, 2014
Filed:
Mar. 28, 2008
Applicants:
Yasumasa Morishima, Tokyo, JP;
Kenji Kita, Tokyo, JP;
Shinichi Ishiwata, Tokyo, JP;
Inventors:
Assignee:
The Furukawa Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 7/12 (2006.01); B32B 15/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A wafer-adhering adhesive tape, which has, on a surface of a base, a radiation-curable removable adhesive layer, and if necessary a die-bonding adhesive layer in order, wherein the radiation-curable removable adhesive layer is mainly composed of an acrylic-series copolymer having, in a principal chain, at least a radiation-curable carbon-carbon double bond containing group, a hydroxyl group, and a group containing a carboxyl group, respectively, and the radiation-curable removable adhesive layer has a gel fraction of 60% or greater.