Patent US2736735A successfully refreshed from Google Patents.
US2736735A
Expired / Lapsed
US
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Tetracycline antibiotic zirconium hydroxyacid complexes
Assignee: Wyeth Holdings LLC
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Filing: 1952-07-08
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Granted: 1956-02-28
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Expires: 1972-07-08
Abstract
No abstract record available.
Inventors
- 👤 Michel George Herman
- 👤 Petersen Clifford Everett
- 👤 Lockhart Merton Cooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:58
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A COMPLEX OF A BROAD SPECTRUM TETRACYCLINE TYPE ANTIBIOTIC SELECTED FROM THE GROUP CONSISTING OF CHLORTETRACYCLINE AND OXYTETRACYCLINE WITH A ZIRCONIUM SALT OF CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF CITRIC ACID, GLUCONIC ACID, TARTARIC ACID, LACTIC ACID, MALIC ACID, ASCORBIC ACID, MANDELIC ACID AND PYRUVIC ACID.
Claim 2
Dependent Claim
48 words
A COMPLEX OF A BROAD SPECTRUM TETRACYCLINE TYPE ANTIBIOTIC SELECTED FROM THE GROUP CONSISTING OF CHLORTETRACYCLINE AND OXYTETRACYCLINE WITH A ZIRCONIUM SALT OF CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF CITRIC ACID, GLUCONIC ACID, TARTARIC ACID, LACTIC ACID, MALIC ACID, ASCORBIC ACID, MANDELIC ACID AND PYRUVIC ACID.
References Cited (Backward Citations)
US2603584A
Cited
US2516080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |