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 6844379 B1

PDF
Full Text
Expired
Date of Patent:
Jan. 18, 2005

Filed:

Nov. 19, 2002
Applicants:

Xiao-qi Zhou, San Diego, CA (US);

Henry Wevick, Rialto, CA (US);

Nancy Iwamoto, Ramona, CA (US);

Shao Wei LI, San Diego, CA (US);

Alan Grieve, El Cajon, CA (US);

Inventors:

Xiao-Qi Zhou, San Diego, CA (US);

Henry Wevick, Rialto, CA (US);

Nancy Iwamoto, Ramona, CA (US);

Shao Wei Li, San Diego, CA (US);

Alan Grieve, El Cajon, CA (US);

Assignee:

Honeywell International Inc., Morristown, NJ (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08K 308 ; C08L 6300 ; C08L 7900 ;
U.S. Cl.
CPC ...
Abstract

Compositions having high moisture resistance and flexibility comprise an organic component and a filler. The organic component comprises a long-chain cycloaliphatic epoxy resin, a short-chain cycloaliphatic epoxy resin, a cyanate ester, and a Lewis acid catalyst. Preferably the organic component further comprises a Bronsted acid co-catalyst and/or a flexibilizing modifier. The compositions are useful in various semiconductor applications, including as die attach adhesives, underfills, encapsulants, via fills, prepreg binders, polymer solder masks and polymer bumps on flip chip or BGA assemblies.


Find Patent Forward Citations

Zhou, Xiao-Qi. (2005). Long and short-chain cycloaliphatic epoxy resin, cyanate ester and lewis and bronsted catalysts (U.S. Patent No. 6844379). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6844379

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