US2440029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for extracting pigments
Assignee: GEN BIOCHEMICALS Inc
•
Filing: 1943-10-13
•
Granted: 1948-04-20
•
Expires: 1963-10-13
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Tabor
- 👤 Howard F Seibert
- 👤 Paul R Frohring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:40
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/59
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20772E
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US2245536A
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US2170872A
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US2136030A
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US2271406A
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US2266830A
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US2347565A
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US2318748A
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US2318749A
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US2383631A
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US2383630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |