US2692869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compounded rubber stock
Assignee: Columbia Southern Chemical Corp
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Filing: 1950-03-10
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Granted: 1954-10-26
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Expires: 1970-03-10
Abstract
No abstract record available.
Inventors
- 👤 Pechukas Alphonse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:47
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/053; C08K3/00; C08K3/34; C08K3/36; C08K9/00; C08K9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A RUBBER COMPOSITION WHICH COMPRISES A RUBBER, FINELY DIVIDED SILICA CONTAINING NOT LESS THAN 2 NOR MORE THAN 10 PERCENT BY WEIGHT OF FREE WATER, SAID SILICA BEING IN THE PROPORTION OF 5 TO 100 PARTS BY VOLUME PER 100 PARTS BY WEIGHT OF A RUBBER AND A WATER MISCIBLE POLYHYDRIC ALCOHOL CONTAINING CARBON HYDROGEN AND OXYGEN AS ITS ONLY ELEMENTS IN SUBSTANTIAL AMOUNT UP TO 10 PERCENT BASED UPON THE WEIGHT OF THE SILICA.
Claim 2
Dependent Claim
75 words
A RUBBER COMPOSITION WHICH COMPRISES A RUBBER, FINELY DIVIDED SILICA CONTAINING NOT LESS THAN 2 NOR MORE THAN 10 PERCENT BY WEIGHT OF FREE WATER, SAID SILICA BEING IN THE PROPORTION OF 5 TO 100 PARTS BY VOLUME PER 100 PARTS BY WEIGHT OF A RUBBER AND A WATER MISCIBLE POLYHYDRIC ALCOHOL CONTAINING CARBON HYDROGEN AND OXYGEN AS ITS ONLY ELEMENTS IN SUBSTANTIAL AMOUNT UP TO 10 PERCENT BASED UPON THE WEIGHT OF THE SILICA.
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) | 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 |