US3558594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Erythromycin aliphatic sulfate
Assignee: Abbott Laboratories
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Filing: 1968-09-04
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Granted: 1971-01-26
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Expires: 1988-09-04
Abstract
Abstract AMONG NEW ALIPHATIC SULFATE SALTS OF ERYTHROMYCIN, THE N-OCTADECYL SULFATE SALT ESPECIALLY EXHIBITS NOT ONLY SUSTAINED UNIFORM BLOOD SERUM LEVELS IN HUMANS THAT ARE SUPERIOR TO OTHER KNOWN SALT FORMS, BUT ALSO IS SO NEARLY TASTELESS THAT WHEN ADMINISTERED AS AN AQUEOUS SUSPENSION OR AS A CHEWABLE TABLET, IT A LACKS THE OBJECTIONABLE PRONOUNCED AND PROLONGED BITTER TASTE EXPERIENCED WITH ERYTHROMYCIN BASE AND OTHER ACID ADDITION SALTS, HENCE, CHEWABLE TABLETS, UNCOATED TABLETS AND AQUEOUS SUSPENSIONS ARE READILY ACCEPTABLE AS ORAL DOSAGE FORMS.
Inventors
- 👤 Peter Handley Jones
- 👤 Ronald Gay Wiegand
- 👤 Alexander Hing Chinn Chun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:25
CPC Classifications
C; C07; C07H; C07H17/00; C07H17/04; C07H17/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |