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:
Aug. 19, 1997
Filed:
Jun. 07, 1995
Applicant:
Inventors:
Anson Jay Call, Holmes, NY (US);
Stephen Leslie Buchwalter, Hopewell Junction, NY (US);
Sushumna Iruvanti, Wappingers Falls, NY (US);
Stanley J Jasne, Yorktown, NY (US);
Frank L Pompeo, Jr, Walden, NY (US);
Paul Anthony Zucco, Red Hook, NY (US);
Wayne Martin Moreau, Wappingers Falls, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257778 ; 257787 ;
Abstract
A C4 or flip chip reworkable electronic device is provided comprising integrated circuit chip having conductive pads thereon which pads are electrically connected to corresponding pads on an interconnection substrate by solder connections, wherein the space between the chip and substrate is sealed using a specially defined thermoplastic resin such as polysulfone and polyetherimide.