US2864744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Penicillin in solid dosage unit form
Assignee: Wyeth LLC
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Filing: 1955-12-05
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Granted: 1958-12-16
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Expires: 1975-12-05
Abstract
No abstract record available.
Inventors
- 👤 Jack J Mendelsohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:32
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/41; A61K31/425; A61K31/429; A61K31/43
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
65 words
A THERAPEUTIC DOSAGE UNIT IN SOLID COMPRESSED FORM COMPRISING AS A UNIFORM MIXTURE A THERAPEUTIC AMOUNT OF WATER-SOLUBLE PENICILLIN SALT, A WATER-INSOLUBLE AND ACIDINSOLUBLE PROTEIN WHICH IS SOLUBLE IN A SATURATED AQUEOUS SOLUTION OF THE PENICILLIN SALT, ANACID-INSOLUBLE, ALKALI SOLUBLE MEDICINAL SHELLAC, A BUFFERING AGENT, AND EXCIPIENTS, SAID DOSAGE UNIT BEING SUBSTANTIALLY RESISTANT TO THE ACTION OF THE GASTRIC JUICE WHILE READILY DISINTEGRATING AND JUICE.
Claim 2
Dependent Claim
65 words
A THERAPEUTIC DOSAGE UNIT IN SOLID COMPRESSED FORM COMPRISING AS A UNIFORM MIXTURE A THERAPEUTIC AMOUNT OF WATER-SOLUBLE PENICILLIN SALT, A WATER-INSOLUBLE AND ACIDINSOLUBLE PROTEIN WHICH IS SOLUBLE IN A SATURATED AQUEOUS SOLUTION OF THE PENICILLIN SALT, ANACID-INSOLUBLE, ALKALI SOLUBLE MEDICINAL SHELLAC, A BUFFERING AGENT, AND EXCIPIENTS, SAID DOSAGE UNIT BEING SUBSTANTIALLY RESISTANT TO THE ACTION OF THE GASTRIC JUICE WHILE READILY DISINTEGRATING AND JUICE.
Claim 3
Dependent Claim
64 words
A THERAPEUTIC DOSAGE UNIT IN SOLID COMPRESSED FORM COMPRISING AS A UNIFORM MIXTURE ABOUT 33% BY WEIGHT OF AN ALKALI METAL SALT OF PENICILLIN, ABOUT 20% BY WEIGHT OF CASEIN, ABOUT 7% BY WEIGHT OF BUFFERS AND ABOUT 10% BY WEIGHT OF WHITE SHELLAC, THE REMAINDER OF THE UNIT BEING EXCIPIENTS, THE PENICILLIN, CASEIN AND WHITE SHELLAC BEING HOMOGENEOUSLY DISPERSED THROUGHOUT THE DOSAGE UNIT.
Claim 4
Dependent Claim
64 words
A THERAPEUTIC DOSAGE UNIT IN SOLID COMPRESSED FORM COMPRISING AS A UNIFORM MIXTURE ABOUT 33% BY WEIGHT OF AN ALKALI METAL SALT OF PENICILLIN, ABOUT 20% BY WEIGHT OF CASEIN, ABOUT 7% BY WEIGHT OF BUFFERS AND ABOUT 10% BY WEIGHT OF WHITE SHELLAC, THE REMAINDER OF THE UNIT BEING EXCIPIENTS, THE PENICILLIN, CASEIN AND WHITE SHELLAC BEING HOMOGENEOUSLY DISPERSED THROUGHOUT THE DOSAGE UNIT.
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) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |