US3546338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heparin composition
Assignee: Wyeth Holdings LLC
•
Filing: 1967-03-30
•
Granted: 1970-12-08
•
Expires: 1987-03-30
Abstract
No abstract record available.
Inventors
- 👤 Robert Henry Engel
- 👤 Marvin Jay Fahrenbach
- 👤 Richard Lansing Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:07
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0019; A61K31/00; A61K31/70; A61K31/715
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3062716A
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US3146167A
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US3247063A
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US3232833A
Cited
GB1117649A
Cited
GB1135784A
Cited
GB1135783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |