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:
Sep. 11, 1990
Filed:
Dec. 31, 1986
Applicant:
Inventors:
Assignee:
Ciba Corning Diagnostics Corp., Medfield, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
436 18 ; 436 16 ; 2524081 ;
Abstract
The present invention relates to a novel method for stabilizing aqueous solutions of serum complement for extended periods of time and the resultant stabilized complement solutions. More particularly, morphilino buffering compounds and tris-hydroxymethyl buffering compounds have been used to make aqueous buffers with a pH between about 6.5 and 8.5 and a concentration of greater than 0.01M. These buffers have been found to extend the normal life of complement solutions to unexpectedly longer periods.