US2471497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding cellulose surfaces
Assignee: Celanese Corp
•
Filing: 1943-06-03
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Granted: 1949-05-31
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Expires: 1963-06-03
Abstract
No abstract record available.
Inventors
- 👤 Roberts Robert Pierce
- 👤 Jones Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:54
CPC Classifications
C; C09; C09J; C09J129/00; C09J129/02; C09J129/04; C08; C08L; C08L2666/00; C08L2666/28; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31884
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1125973A
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US1905999A
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US2173781A
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US2162678A
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US2261983A
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US2328057A
Cited
US2438176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |