US2478038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beta-substituted ethyl-mercapto polymers and process of preparing same
Assignee: EIDP Inc
•
Filing: 1944-11-01
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Granted: 1949-08-02
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Expires: 1964-11-01
Abstract
No abstract record available.
Inventors
- 👤 William J Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:20
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/22; C08C19/20; C08G; C08G75/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2125649A
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US2352435A
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US2347182A
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US2317736A
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US2332049A
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US2316129A
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US2341553A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |