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:
Jun. 30, 2015
Filed:
Feb. 29, 2012
Applicants:
Roberto Irizarry, Raleigh, NC (US);
Haixin Yang, Chapel Hill, NC (US);
Inventors:
Roberto Irizarry, Raleigh, NC (US);
Haixin Yang, Chapel Hill, NC (US);
Assignee:
E I DU PONT DE NEMOURS AND COMPANY, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 1/00 (2006.01); B22F 9/24 (2006.01); H01L 31/0224 (2006.01); H01B 1/02 (2006.01);
U.S. Cl.
CPC ...
B22F 1/0044 (2013.01); B22F 1/0011 (2013.01); B22F 9/24 (2013.01); H01L 31/022425 (2013.01); H01B 1/02 (2013.01); Y02E 10/50 (2013.01);
Abstract
The process for making silver powder particles with very small size crystallites uses a combination of gum arabic and maleic acid with the reduction of a silver salt with ascorbic acid. Silver thick film paste containing these silver powder particles can be used in electronic applications to form electrodes for semiconductor devices and, in particular, solar cells.