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:
Dec. 08, 1998
Filed:
Dec. 10, 1996
Ranjan Bhadra, Calcutta, IN;
Abhijit Nayak, Calcutta, IN;
Pataki Charan Bandyopadhyay, Calcutta, IN;
Sumanta Basu, Calcutta, IN;
Abstract
A process for preparing a nontoxic lipopolysaccharide, which comprises (i) cultivating in a culture medium bacteria of the genus Acidophilium having accession No. MTCC 1979, (ii) separating the culture bacteria, and repeatedly washing the separated bacteria, (iii) extracting the washed bacteria with a lipophilic solvent, (iv) cooling the extract and repeatedly centrifuging the cooled material, (v) dialyzing the supernatant resulting from said centrifuging, (vi) lyophilizing the dialyzed material, (vii) precipitating the lipopolysaccharide by treating the lyophilized material with a polar solvent, and (viii) drying the precipitated polyliposaccharide.