US3089818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water dispersible antibiotics
Assignee: Baxter International Inc
•
Filing: 1960-06-02
•
Granted: 1963-05-14
•
Expires: 1980-06-02
Abstract
No abstract record available.
Inventors
- 👤 Irwin M Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:19
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K9/00; A61K9/14; A61K9/141; A61K9/146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
THE METHOD OF SOLUBILIZING A RELATIVELY INSOLUBLE POLYPEPTIDE ANTIBIOTIC WHICH COMPRISES, (A) DISSOLVING SAID ANTIBIOTIC AND A HIGHLY SOLUBLE POLYMERIC MATERIAL SELECTED FROM THE CLASS CONSISTING OF: POLYVINYL PYRROLIDONE, POLYVINYL OXAZOLIDONES, POLYOXYETHYLENE-POLYPROPYLENE BLOCK COPOLYMERS AND VINYL PYRROLIDONE AND VINYL ACETATE COPOLYMERS IN A MUTUAL ESSENTIALLY NON-AQUEOUS SOLVENT, (B) AND THEN REMOVING SUBSTANTIALLY ALL OF SAID SOLVENT TO OBTAIN A READILY WATER-SOLUBLE MOLECULAR COMPLEX.
Claim 2
Independent Claim
63 words
THE METHOD OF SOLUBILIZING A RELATIVELY INSOLUBLE POLYPEPTIDE ANTIBIOTIC WHICH COMPRISES, (A) DISSOLVING SAID ANTIBIOTIC AND A HIGHLY SOLUBLE POLYMERIC MATERIAL SELECTED FROM THE CLASS CONSISTING OF: POLYVINYL PYRROLIDONE, POLYVINYL OXAZOLIDONES, POLYOXYETHYLENE-POLYPROPYLENE BLOCK COPOLYMERS AND VINYL PYRROLIDONE AND VINYL ACETATE COPOLYMERS IN A MUTUAL ESSENTIALLY NON-AQUEOUS SOLVENT, (B) AND THEN REMOVING SUBSTANTIALLY ALL OF SAID SOLVENT TO OBTAIN A READILY WATER-SOLUBLE MOLECULAR COMPLEX.
References Cited (Backward Citations)
US2472640A
Cited
US2611731A
Cited
US2658045A
Cited
US2739922A
Cited
US2688550A
Cited
US2822314A
Cited
GB759577A
Cited
GB794482A
Cited
US2897120A
Cited
GB784659A
Cited
US2811449A
Cited
US2873192A
Cited
US2948708A
Cited
US2872322A
Cited
US2872321A
Cited
US2946773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |