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:
Nov. 29, 2016
Filed:
Dec. 12, 2013
Applicant:
Promerus, Llc, Brecksville, OH (US);
Inventors:
W. C. Peter Tsang, Brecksville, OH (US);
Andrew Bell, Brecksville, OH (US);
Hongshi Zhen, Union, KY (US);
Keitaro Seto, Brecksville, OH (US);
Assignee:
PROMERUS, LLC, Brecksville, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D 167/02 (2006.01); B81C 1/00 (2006.01); B23K 35/36 (2006.01); H05K 3/34 (2006.01);
U.S. Cl.
CPC ...
C09D 167/02 (2013.01); B23K 35/3613 (2013.01); B81C 1/00317 (2013.01); H05K 3/3489 (2013.01); B81C 1/00301 (2013.01); B81C 2201/019 (2013.01); H05K 2203/0485 (2013.01);
Abstract
A thermally decomposable polymer composition comprising a polyester containing repeating units of an ester of diglycolic acid and difunctional tertiary alcohol are disclosed, which are useful in the forming of microelectronic assemblies. A representative example of a composition comprises a thermally decomposable polymer of the formula: wherein n is at least about 20, which provides both tackiness and solder fluxing, among other benefits.