Patent US2949400A successfully refreshed from Google Patents.
US2949400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable anti-hemorrhagic powders
Assignee: Wyeth Holdings LLC
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Filing: 1956-07-26
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Granted: 1960-08-16
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Expires: 1976-07-26
Abstract
No abstract record available.
Inventors
- 👤 Sieger George Madison
- 👤 Yen Ernest Chu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:22
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/14; Y; Y10; Y10S; Y10S128/00; Y10S128/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A DRY, FREE-FLOWING, SUBSTANTIALLY NON-DUSTING POWDER COMPRISING A WATER-INSOLUBLE ANTI-HEMORRHAGIC COMPOUND HAVING VITAMIN K ACTIVITY, AN ESTER SELECTED FROM THE GROUP CONSISTING OF DIETHYL SUCCINATE, DI-NBUTYL SUCCINATE, DIETHYL PIMELATE, AND DI-N-BUTYL PIMELATE, AND A SILICA AEROGEL HAVING A SURFACE AREA OF FROM ABOUT 100 TO ABOUT 400 SQUARE METERS/GRAM, SAID WATER INSOLUBLE ANTI-HEMORRHAGIC COMPOUND BEING IN SOLUTION IN SAID ESTER AND UNIFORMLY DISTRIBUTED IN AND THROUGHOUT SAID SILICA AEROGEL.
Claim 2
Dependent Claim
69 words
A DRY, FREE-FLOWING, SUBSTANTIALLY NON-DUSTING POWDER COMPRISING A WATER-INSOLUBLE ANTI-HEMORRHAGIC COMPOUND HAVING VITAMIN K ACTIVITY, AN ESTER SELECTED FROM THE GROUP CONSISTING OF DIETHYL SUCCINATE, DI-NBUTYL SUCCINATE, DIETHYL PIMELATE, AND DI-N-BUTYL PIMELATE, AND A SILICA AEROGEL HAVING A SURFACE AREA OF FROM ABOUT 100 TO ABOUT 400 SQUARE METERS/GRAM, SAID WATER INSOLUBLE ANTI-HEMORRHAGIC COMPOUND BEING IN SOLUTION IN SAID ESTER AND UNIFORMLY DISTRIBUTED IN AND THROUGHOUT SAID SILICA AEROGEL.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |