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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.:

US 10224438 B1

PDFFull Text
Date of Patent:
Mar. 05, 2019

Filed:

Mar. 10, 2017

Lead-tellurium inorganic reaction systems

Applicant:

Heraeus Precious Metals North America Conshohocken Llc, West Conshohocken, PA (US);

Inventors:

Cuiwen Guo, Horsham, PA (US);

Li Yan, Warrington, PA (US);

Lei Wang, Conshohocken, PA (US);

Assignee:

HERAEUS PRECIOUS METALS NORTH AMERICA CONSHOHOCKEN, LLC, West Conshohocken, PA (US);

Attorney:

Blank Rome LLP

Primary Examiner:

Tri V Nguyen

Int. Cl.
CPC ...
C09D 5/24 (2006.01); H01B 1/16 (2006.01); H01L 31/02 (2006.01); H01L 31/0224 (2006.01); C01B 19/00 (2006.01); C03C 3/12 (2006.01); C03C 8/10 (2006.01); C03C 8/18 (2006.01); C09D 1/00 (2006.01); C09D 5/00 (2006.01); H01L 31/0216 (2014.01); H01L 31/18 (2006.01); B05D 1/02 (2006.01); B05D 1/18 (2006.01); B05D 1/28 (2006.01); B05D 1/30 (2006.01); H01B 1/22 (2006.01);
U.S. Cl.
CPC ...
H01L 31/02008 (2013.01); B05D 1/02 (2013.01); B05D 1/18 (2013.01); B05D 1/28 (2013.01); B05D 1/305 (2013.01); C01B 19/002 (2013.01); C01B 19/004 (2013.01); C03C 3/122 (2013.01); C03C 8/10 (2013.01); C03C 8/18 (2013.01); C09D 1/00 (2013.01); C09D 5/006 (2013.01); C09D 5/24 (2013.01); H01B 1/16 (2013.01); H01B 1/22 (2013.01); H01L 31/02168 (2013.01); H01L 31/022425 (2013.01); H01L 31/1864 (2013.01); Y02E 10/50 (2013.01);
Abstract

The invention provides an electroconductive paste comprising metallic particles, an inorganic reaction system, and an organic vehicle. The inorganic reaction system includes a lead-tellurium-magnesium composition of Formula (II): Pb—Te—(Mg—Ca—Sr—Ba)-M-Oe, wherein 0<a, b, or d≤1, 0≤w, x, y, z≤1, w+x+y+z=c, at least one of w, x, y and z is greater than zero, the sum of a, b, c and d is 1, 0<c≤0.2, 0≤d≤0.5, a:b is between about 10:90 and about 90:10, (a+c+d):b is between about 10:90 and about 90:10, M is one or more elements, and e is a number sufficient to balance the Pb, Te, Mg—Ca—Sr—Ba and M components.

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