Patent US2470651A successfully refreshed from Google Patents.
US2470651A
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Polymers of condensation product of aryl diether dicarboxylic acid and dihydric alcohol
Assignee: Westinghouse Electric Corp
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Filing: 1944-05-23
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Granted: 1949-05-17
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Expires: 1964-05-23
Abstract
No abstract record available.
Inventors
- 👤 Gerson S Schaffel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:57
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; C; C09; C09D; C09D167/00; C09D167/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T442/00; Y10T442/20; Y10T442/2475
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |