Patent US2474807A successfully refreshed from Google Patents.
US2474807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of synthetic rubber
Assignee: Uniroyal Inc
•
Filing: 1946-12-04
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Granted: 1949-07-05
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Expires: 1966-12-04
Abstract
No abstract record available.
Inventors
- 👤 Dwight L Schoenc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:44
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1901354A
Cited
US1915745A
Cited
US1938731A
Cited
US1938751A
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US2089444A
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US2066330A
Cited
US2418978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |