US2902407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wax-coated penicillin product
Assignee: Commercial Solvents Corp
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Filing: 1955-06-14
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Granted: 1959-09-01
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Expires: 1975-06-14
Abstract
No abstract record available.
Inventors
- 👤 Herbert M Gross
- 👤 Jr Robert A Shurter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:44
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/14; A61K9/16; A61K9/1605; A61K9/1617; A61K31/00; A61K31/33; A61K31/395; A61K31/41; A61K31/425; A61K31/429; A61K31/43
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
AN ORAL THERAPEUTIC PENICILLIN PREPARATION IN SOLID PARTICULATE FORM WHICH COMPRISES A BUFFERED CRYSTALLINE POTASSIUM PENICILLIN COATED WITH ADN EMBEDDED IN SOLID PARTICLES OF A WAX WHICH IS SOLID AT ROOM TEMPERATURES, INERT TO THE PENICILLIN, IMPERVIOUS TO WATER AND SUBSTANTIALLY INACTIVE PHYSIOLOGICALLY, SAID PREPARATION HAVING A POTENCY OF ABOUT 100,000 TO 110,000 UNITS PER GRAM, BEING MIXED WITH A FLAVOURING AGENT AND HAVING A PARTICLE SIZE RANGING FROM ABOUT 20 TO 80 MESH, WHEREBY THE BITTER TASTE OF THE POTASSIUM PENICILLIN IS MASKED TO SUCH AN EXTENT THAT IT IS UNOBJECTIONABLE.
Claim 2
Dependent Claim
92 words
AN ORAL THERAPEUTIC PENICILLIN PREPARATION IN SOLID PARTICULATE FORM WHICH COMPRISES A BUFFERED CRYSTALLINE POTASSIUM PENICILLIN COATED WITH ADN EMBEDDED IN SOLID PARTICLES OF A WAX WHICH IS SOLID AT ROOM TEMPERATURES, INERT TO THE PENICILLIN, IMPERVIOUS TO WATER AND SUBSTANTIALLY INACTIVE PHYSIOLOGICALLY, SAID PREPARATION HAVING A POTENCY OF ABOUT 100,000 TO 110,000 UNITS PER GRAM, BEING MIXED WITH A FLAVOURING AGENT AND HAVING A PARTICLE SIZE RANGING FROM ABOUT 20 TO 80 MESH, WHEREBY THE BITTER TASTE OF THE POTASSIUM PENICILLIN IS MASKED TO SUCH AN EXTENT THAT IT IS UNOBJECTIONABLE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |