US2854378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetracycline suppository
Assignee: Bristol Laboratories Inc
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Filing: 1955-12-08
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Granted: 1958-09-30
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Expires: 1975-12-08
Abstract
No abstract record available.
Inventors
- 👤 Frank H Buckwalter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:27
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/65; A61K9/00; A61K9/0012; A61K9/0034; A61K9/02; Y; Y10; Y10S; Y10S424/00; Y10S424/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A STABLE, NON-TOXIC, THERAPEUTICALLY USEFUL TETRACYCLINE SUPPOSITORY WHICH REMAINS SOLID WHEN STORED BELOW 50* C. COMPRISING A FORM OF TETRACYCLINE SELECTED FROM THE GROUP CONSISTING OF TETRACYCLINE, HYDRATES THEREOF, NONTOXIC METAL SALTS THEREOF AND NON-TOXIC ACID ADDITION SALTS THEREOF AND A WATER-SOLUBLE CONDENSATION PRODUCT, HAVING A MOLECULAR WEIGHT GREATER THAN 7500, OF ETHYLENE OXIDE WITH A CONDENSATION PRODUCT OF PROPYLENE OXIDE WITH PROPYLENE GLYCOL, SAID CONDENSATION PRODUCT BEING SOLUBLE IN WATER IN ALL PROPORTIONS AND MELTING AT ABOUT 51-54*C.
Claim 2
Dependent Claim
79 words
A STABLE, NON-TOXIC, THERAPEUTICALLY USEFUL TETRACYCLINE SUPPOSITORY WHICH REMAINS SOLID WHEN STORED BELOW 50* C. COMPRISING A FORM OF TETRACYCLINE SELECTED FROM THE GROUP CONSISTING OF TETRACYCLINE, HYDRATES THEREOF, NONTOXIC METAL SALTS THEREOF AND NON-TOXIC ACID ADDITION SALTS THEREOF AND A WATER-SOLUBLE CONDENSATION PRODUCT, HAVING A MOLECULAR WEIGHT GREATER THAN 7500, OF ETHYLENE OXIDE WITH A CONDENSATION PRODUCT OF PROPYLENE OXIDE WITH PROPYLENE GLYCOL, SAID CONDENSATION PRODUCT BEING SOLUBLE IN WATER IN ALL PROPORTIONS AND MELTING AT ABOUT 51-54*C.
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) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |