US3499959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Therapeutic tetracycline preparation having delayed therapeutic action and processes for the production of said preparation
Assignee: Chemical and Pharmaceutical Patent Holding Ltd
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Filing: 1966-07-05
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Granted: 1970-03-10
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Expires: 1986-07-05
Abstract
No abstract record available.
Inventors
- 👤 Murray E Corn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:14
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K31/65; A61K47/00; A61K47/50; A61K47/51; A61K47/56; A61K47/58; A61K9/00; A61K9/48; A61K9/50; A61K9/5073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2953497A
Cited
US2809916A
Cited
US2991226A
Cited
US2971889A
Cited
US2954322A
Cited
US2928770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |