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Method For The Purification Of Capsular Polysaccharides
Abstract: The present invention broadly relates to the improved method for purification of capsular polysaccharides. Particularly, the present invention relates to the method of purification of capsular polysaccharides from Streptococcus pneumoniae and other similar related capsular polysaccharides produced from both gram-negative and gram-positive microorganisms. More particularly, the invention involves passing the crude capsular polysaccharide solution through reinforced cellulose membrane having quaternary ammonium, and further contacting the solution with silicon dioxide (SiO2) and isolating the capsular polysaccharide in a pure form. The purified capsular polysaccharide is useful for producing vaccines that contain the polysaccharide alone or are conjugated to proteins.
Notices, Deadlines & Correspondence
Patent Information
Applicants
BIOLOGICAL E LIMITED
Inventors
1. Chandra shekar Macha
2. Eswara Reddy Kowlakuntla
3. Sudeep Kumar
4. Vikram Madhusudan Paradkar
5. Narender Dev Mantena
6. Mahima Datla
Specification
DESC:PLEASE SEE ATTACHED ,CLAIMS:PLEASE SEE ATTACHED
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202241053370-STATEMENT OF UNDERTAKING (FORM 3) [19-09-2022(online)].pdf | 2022-09-19 |
| 2 | 202241053370-PROVISIONAL SPECIFICATION [19-09-2022(online)].pdf | 2022-09-19 |
| 3 | 202241053370-FORM 1 [19-09-2022(online)].pdf | 2022-09-19 |
| 4 | 202241053370-DECLARATION OF INVENTORSHIP (FORM 5) [19-09-2022(online)].pdf | 2022-09-19 |
| 5 | 202241053370-FORM-26 [26-09-2022(online)].pdf | 2022-09-26 |
| 6 | 202241053370-Proof of Right [15-03-2023(online)].pdf | 2023-03-15 |
| 7 | 202241053370-CORRESPONDENCE-OTHERS [19-09-2023(online)].pdf | 2023-09-19 |
| 8 | 202241053370-COMPLETE SPECIFICATION [19-09-2023(online)].pdf | 2023-09-19 |
| 9 | 202241053370-FORM-26 [06-10-2023(online)].pdf | 2023-10-06 |
| 10 | 202241053370-Covering Letter [06-10-2023(online)].pdf | 2023-10-06 |
| 11 | 202241053370-RELEVANT DOCUMENTS [05-01-2024(online)].pdf | 2024-01-05 |
| 12 | 202241053370-FORM 13 [05-01-2024(online)].pdf | 2024-01-05 |
| 13 | 202241053370-FORM 3 [20-03-2025(online)].pdf | 2025-03-20 |