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:
Jan. 13, 2009
Filed:
Nov. 10, 2005
Thomas E. Dueber, Wilmington, DE (US);
Michael W. J. West, Wilmington, DE (US);
Kuppusamy Kanakarajan, Dublin, OH (US);
Brian C. Auman, Pickerington, OH (US);
Thomas E. Dueber, Wilmington, DE (US);
Michael W. J. West, Wilmington, DE (US);
Kuppusamy Kanakarajan, Dublin, OH (US);
Brian C. Auman, Pickerington, OH (US);
E.I. DuPont de Nemours, Wilmington, DE (US);
Abstract
The invention relates to low-temperature curable photosensitive compositions containing a polyamic acid, which compositions are developable in aqueous alkaline solutions and are curable, at a temperature of at least 160° C. and up to 200° C., to low modulus polyimides suitable for use in electronic circuitry applications, and which are particularly suitable for use in flexible circuit applications where low curl, low temperature curing, and good adhesion is a significant advantage.