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. 16, 2025
Filed:
May. 13, 2021
Serum Institute of India Private Limited, Maharashtra, IN;
Rajeev Mhalasakant Dhere, Maharashtra, IN;
Swapan Kumar Jana, Maharashtra, IN;
Walmik Karbhari Gaikwad, Maharashtra, IN;
Serum Institute of India Private Limited, Pune Maharashtra, IN;
Abstract
The present disclosure relates to alternative, cost effective, rapid and simple methods for bacterial capsular polysaccharide (CPS) manufacturing resulting in 1) simultaneous sizing and purification of CPS 2) high CPS yield, 3) improved CPS purity and removal of protein and nucleic acid contaminants, 4) CPS with preserved epitopic conformation and 5) stable and immunogenic polysaccharide-protein conjugate vaccines comprising of said size reduced and purified CPS The method particularly comprises subjecting crude/native bacterial polysaccharide to an oxidizing agent to obtain high purity, high yield and structurally intact CPS having optimal molecular size and other desirable CPS attributes. The method is amenable for commercial scale manufacturing of polysaccharide-protein conjugate vaccines.