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:
Apr. 03, 2018
Filed:
Dec. 07, 2015
Applicant:
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
Inventor:
Marc Henry Labranche, Chapel Hill, NC (US);
Assignee:
E I DU PONT DE NEMOURS AND COMPANY, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B 1/16 (2006.01); B05D 5/12 (2006.01); H01B 1/02 (2006.01); H01B 1/22 (2006.01); H01B 13/00 (2006.01);
U.S. Cl.
CPC ...
H01B 1/02 (2013.01); B05D 5/12 (2013.01); H01B 1/16 (2013.01); H01B 1/22 (2013.01); H01B 13/0016 (2013.01);
Abstract
This invention relates to a copper thick film paste composition paste comprising copper powder, a Pb-free, Bi-free and Cd-free borosilicate glass frit, ruthenium-based powder, and an organic vehicle. The invention also provides methods of using the copper thick film paste composition to make a copper conductor on a substrate. Typical substrates are selected from the group consisting of aluminum nitride, aluminum oxide and silicon nitride.