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. 05, 1983
Filed:
Jun. 17, 1982
Michael H Coan, El Cerrito, CA (US);
William J Brockway, San Leandro, CA (US);
Cutter Laboratories, Inc., Berkeley, CA (US);
Abstract
A method is disclosed for separating alpha-1-proteinase inhibitor from a blood plasma fraction particularly from the Cohn fractionation scheme. An aqueous solution of the blood plasma fraction is held at a pH of about 6.5-8.5, and a temperature of about 2.degree.-50.degree. C. for a period of about 0.2-24 hours and then mixed with a poly-condensed polyglycol in a proportion of about 10-15 parts of polymer per 100 ml of aqueous solution containing the blood plasma fraction. The mixture may be held at a temperature of about 2.degree.-10.degree. C. for a period of about 1-24 hours. Next, the pH of the mixture is adjusted to about 4.6-5.7, to selectively precipitate unwanted proteins from the solution of alpha-1-proteinase inhibitor which is separated from the solution and purified further.