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:
Mar. 30, 1982
Filed:
Sep. 22, 1980
Karl Bunnig, Bad Munder, DE;
Abstract
An immune globulin solution suitable for intravenous use is produced by purifying a salt-containing solution of an immune globulin in a number of adsorptive purification steps using an aqueous, humid, amorphous, chemically pure silicic acid of sub-microscopically fine distribution as the adsorption agent. In each step, the adsorption agent is suspended in the solution, the suspension is incubated for 30 to 60 minutes at about 20.degree. C. while being stirred and the adsorption agent is removed. During at least the first purification step the pH of the suspension is at a value of about 6.8.+-.0.05 (20.degree. C.) and during a subsequent purification step the pH of the suspension is at a value of about 6.5.+-.0.05 (20.degree. C.).