US3159537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Potentiation of tetracycline by phosphinic acid
Assignee: Wyeth Holdings LLC
•
Filing: 1960-12-20
•
Granted: 1964-12-01
•
Expires: 1980-12-20
Abstract
No abstract record available.
Inventors
- 👤 Takesue Edward
- 👤 Hlavka Joseph John
- 👤 Boothe James Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:09
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/65; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/30; C07F9/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A COMPOSITION OF MATTER COMPRISING A TETRACYCLINE ANTIBIOTIC AND AS A POTENTIATING AGENT THEREFOR FROM 0.1 TO 10 PARTS BY WEIGHT OF A PHOSPHINIC ACID OF THE FORMULA:
Claim 2
Dependent Claim
28 words
A COMPOSITION OF MATTER COMPRISING A TETRACYCLINE ANTIBIOTIC AND AS A POTENTIATING AGENT THEREFOR FROM 0.1 TO 10 PARTS BY WEIGHT OF A PHOSPHINIC ACID OF THE FORMULA:
References Cited (Backward Citations)
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Cited
US2878289A
Cited
US2834804A
Cited
US2845454A
Cited
US3005020A
Cited
US2976318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |