US2491478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyalcohol-fatty acid-aliphatic amine combinations useful as textile assistants andprocess of producing the same
Assignee: Arkansas Co Inc
•
Filing: 1947-05-12
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Granted: 1949-12-20
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Expires: 1967-05-12
Abstract
No abstract record available.
Inventors
- 👤 Alton A Cook
- 👤 Sapers Ira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:15
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/38; C11D1/52; C11D1/526; C11D1/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2231754A
Cited
US2361185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |