US2692870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compounded rubber stock
Assignee: Columbia Southern Chemical Corp
•
Filing: 1950-06-29
•
Granted: 1954-10-26
•
Expires: 1970-06-29
Abstract
No abstract record available.
Inventors
- 👤 Pechukas Alphonse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:47
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB368867A
Cited
US2047128A
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US2114123A
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US2329322A
Cited
US2250192A
Cited
US2457970A
Cited
US2531396A
Cited
US2578605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-25 | 1958-04-26 | 1958-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-25 | 1962-04-26 | 1962-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-25 | 1966-04-26 | 1966-10-26 | $7700.00 | Window Closed / Lapsed |