US2677645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dextran roentgenographic preparation
Assignee: Merck Sharp & Dohme LLC
•
Filing: 1950-08-11
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Granted: 1954-05-04
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Expires: 1970-08-11
Abstract
No abstract record available.
Inventors
- 👤 Abbott W Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:53
CPC Classifications
A; A61; A61K; A61K49/00; A61K49/04; A61K49/0433; A61K49/0447; A61K49/0461; Y; Y10; Y10S; Y10S424/00; Y10S424/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A ROENTGENORGRAPHIC PREPARATION COMPRISING AN AQUEOUS MIXTURE OF A WATER-SOLUBLE CONTRAST AGENT AND A DEXRAN OF AN AVERAGE MOLECULAR WEIGHT OF ABOUT 25,000 TO 70,000.
Claim 2
Dependent Claim
25 words
A ROENTGENORGRAPHIC PREPARATION COMPRISING AN AQUEOUS MIXTURE OF A WATER-SOLUBLE CONTRAST AGENT AND A DEXRAN OF AN AVERAGE MOLECULAR WEIGHT OF ABOUT 25,000 TO 70,000.
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) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |