Patent US2492170A successfully refreshed from Google Patents.
US2492170A
Expired / Lapsed
US
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Synthetic rubberlike materials from an alkyl acrylate and a haloalkyl acrylate
Assignee: Individual
•
Filing: 1945-05-25
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Granted: 1949-12-27
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Expires: 1965-05-25
Abstract
No abstract record available.
Inventors
- 👤 William C Mast
- 👤 Chessie E Rehberg
- 👤 Charles H Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:00
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1121134A
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US1933052A
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GB411860A
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US2105361A
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US2384889A
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US2326095A
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US2321048A
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US2379297A
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US2404781A
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US2385258A
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US2414803A
Cited
US2410103A
Cited
US2416878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |