US2477928A
Expired / Lapsed
US
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Carotene composition and process of preparing solutions of carotene
Assignee: Individual
•
Filing: 1947-11-04
•
Granted: 1949-08-02
•
Expires: 1967-11-04
Abstract
No abstract record available.
Inventors
- 👤 Miner L Hartmann
- 👤 Harold M Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:25
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/59; Y; Y10; Y10S; Y10S516/00; Y10S516/922
Claims Analysis
Total Claims: 0
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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) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |