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.:

US 7723444 B1

PDF
Full Text
Expired
Date of Patent:
May. 25, 2010

Filed:

Jan. 20, 2006
Applicants:

Yoshihito Akiyama, Ota-ku, JP;

Naoki Tomida, Utsunomiya, JP;

Inventors:

Yoshihito Akiyama, Ota-ku, JP;

Naoki Tomida, Utsunomiya, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 63/00 (2006.01); C08L 63/02 (2006.01); C08L 63/04 (2006.01); H01L 23/29 (2006.01);
U.S. Cl.
CPC ...
Abstract

An epoxy resin composition which comprises an epoxy resin (A), a curing agent (B), a curing accelerator (C) and a component retarding curing of the epoxy resin (D) which is at least one component selected from components (a), (b) and (c) represented by general formulae [1], [2] and [3], respectively, a semiconductor device having a semiconductor element encapsulated by using the composition, and a process for providing latency to an epoxy resin composition. The epoxy resin exhibits excellent storage stability, excellent fluidity and curing property during encapsulating by molding and excellent resistance to soldering without forming cleavages or cracks by the soldering treatment at high temperatures in accordance with the lead-free soldering. An epoxy resin composition can be provided with latency by adjusting the amounts of the curing accelerator and the component for retarding curing.


Find Patent Forward Citations

Akiyama, Yoshihito. (2010). Epoxy resin composition, process for providing latency to the composition and a semiconductor device (U.S. Patent No. 7723444). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7723444

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