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 8183046 B1

PDF
Full Text
Expired
Date of Patent:
May. 22, 2012

Filed:

Jan. 11, 2007
Applicants:

Yi LU, Champaign, IL (US);

Hee-jung Hwang, Baltimore, MD (US);

Nathan Sieracki, Champaign, IL (US);

Dewain Garner, Savoy, IL (US);

Inventors:

Yi Lu, Champaign, IL (US);

Hee-Jung Hwang, Baltimore, MD (US);

Nathan Sieracki, Champaign, IL (US);

Dewain Garner, Savoy, IL (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 31/00 (2006.01); G01N 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method for preparing a composition that includes selecting a pH of the composition; selecting a first buffer with a negative temperature coefficient; selecting a second buffer with a positive temperature coefficient; and forming the composition comprising the first buffer and the second buffer. The composition has an average temperature coefficient, ΔpH/ΔT(T,T)≦1×10pH-unit/K and a ΔpH(T,T)≦0.31 pH-unit for T=4 K and T=313 K.


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