US2458504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction products of gelatin and aldonic acids and process for making same
Assignee: Poor and Co
•
Filing: 1944-03-06
•
Granted: 1949-01-11
•
Expires: 1964-03-06
Abstract
No abstract record available.
Inventors
- 👤 Allan E Chester
- 👤 Frederick F Reisinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:59
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/22; C25D3/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1536012A
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US2057476A
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US1468331A
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US1631671A
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US1892725A
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US2257440A
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US2305622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-11 | 1952-07-12 | 1953-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-11 | 1956-07-12 | 1957-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-11 | 1960-07-12 | 1961-01-11 | $7700.00 | Window Closed / Lapsed |