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:
Jul. 13, 1976
Filed:
May. 05, 1971
William T Kniker, San Antonio, TX (US);
Lincoln Laboratories, Inc., Decatur, IL (US);
Abstract
A new test substance for use in skin testing for tuberculosis, which substance is produced from Mycobacterium tuberculosis (M.tb.) culture filtrate or bacillary extract. The culture filtrate or extract is first fractionated by means of chromatography. Resultant fractions are then further fractionated so as to produce subfractions which contain at least one M.tb. specific antigen and are substantially free of antigens crossreactive with atypical mycobacteria. At least two of these subfractions may then be combined to produce a mix or new test substance, containing a plurality of M.tb. specific antigens only, capable of stimulating lymphocytes in individuals previously sensitized to M. tuberculosis antigens.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile