US2442781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compounding synthetic rubber with sulfur containing mineral oil extract
Assignee: Wilmington Chemical Corp
•
Filing: 1943-01-06
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Granted: 1948-06-08
•
Expires: 1963-01-06
Abstract
No abstract record available.
Inventors
- 👤 Fritz S Rostler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:31
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2399694A
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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) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |