US2462597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amino acid separation
Assignee: C M ARMSTRONG Inc
•
Filing: 1946-02-25
•
Granted: 1949-02-22
•
Expires: 1966-02-25
Abstract
No abstract record available.
Inventors
- 👤 Richard J Block
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:44
CPC Classifications
A; A23; A23J; A23J3/00; A23J3/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2223920A
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US2230641A
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US2240116A
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US2389119A
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US2375164A
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US2375165A
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US2354172A
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US2388195A
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US2405574A
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US2420641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-22 | 1952-08-23 | 1953-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-22 | 1956-08-23 | 1957-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-22 | 1960-08-23 | 1961-02-22 | $7700.00 | Window Closed / Lapsed |