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:
Apr. 24, 2001
Filed:
Apr. 14, 1999
Applicant:
Inventors:
Tatsurou Hirano, Koriyama, JP;
Nobukazu Suzuki, Koriyama, JP;
Toshio Shiobara, Gunma-ken, JP;
Takayuki Aoki, Gunma-ken, JP;
Shoichi Osada, Gunma-ken, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/912 ;
U.S. Cl.
CPC ...
H01L 2/912 ;
Abstract
In semiconductor encapsulating epoxy resin compositions comprising an epoxy resin, a curing agent and an inorganic filler, 1-90% by weight of the inorganic filler is spherical cristobalite. The compositions are able to achieve higher loadings of inorganic filler, allow easy control of the coefficient of thermal expansion, and provide high-quality cured products having improved thermal conductivity and low moisture absorption.