US2441729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Algin gel-forming compositions
Assignee: Kelco Co
•
Filing: 1943-12-08
•
Granted: 1948-05-18
•
Expires: 1963-12-08
Abstract
No abstract record available.
Inventors
- 👤 Arnold B Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:32
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/006; C08B37/0084; A; A23; A23L; A23L29/00; A23L29/20; A23L29/206; A23L29/256
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2420308A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-18 | 1951-11-17 | 1952-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-18 | 1955-11-17 | 1956-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-18 | 1959-11-17 | 1960-05-18 | $7700.00 | Window Closed / Lapsed |