Patent US2508433A successfully refreshed from Google Patents.
US2508433A
Expired / Lapsed
US
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Alginic acid sulfate anticoagulant
Assignee: Wyeth LLC
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Filing: 1946-10-16
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Granted: 1950-05-23
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Expires: 1966-10-16
Abstract
No abstract record available.
Inventors
- 👤 Eric G Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:33
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/006; C08B37/0084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
ALGINIC ACID SULFATE COMPOUNDS SELECTED FROM THE CLASS CONSISTING OF ALGINIC ACID SULFATES AND WATER-SOLUBLE SALTS THEREOF.
Claim 2
Dependent Claim
17 words
ALGINIC ACID SULFATE COMPOUNDS SELECTED FROM THE CLASS CONSISTING OF ALGINIC ACID SULFATES AND WATER-SOLUBLE SALTS THEREOF.
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) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |