US2661845A
Expired / Lapsed
US
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Assignee: Akzona Inc
•
Filing: 1948-10-13
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Granted: 1953-12-08
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Expires: 1968-10-13
Abstract
No abstract record available.
Inventors
- 👤 Milton A Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:38
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/10; D01D1/106; B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D35/00; B01D35/02; B01D29/88; B01D29/92; B01D29/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE18114E
Cited
GB158497A
Cited
GB376574A
Cited
US1976547A
Cited
US2362530A
Cited
US2352130A
Cited
US2360020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |