US2463224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing agents for synthetic elastomers
Assignee: EIDP Inc
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Filing: 1944-07-11
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Granted: 1949-03-01
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Expires: 1964-07-11
Abstract
No abstract record available.
Inventors
- 👤 John R Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/32; C08K5/22; C08K5/24; C08K5/36; C08K5/37
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) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |