US3004940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for incorporating carbon black into rubber
Assignee: Phillips Petroleum Co
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Filing: 1958-06-20
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Granted: 1961-10-17
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Expires: 1978-06-20
Abstract
No abstract record available.
Inventors
- 👤 William R King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:22
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/21; C08J3/215; C08L; C08L21/00; C08J2321/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A METHOD FOR THE MANUFACTURE OF RUBBER HAVING IMPROVED ABRASION RESISTANCE PROPERTIES WHICH COMPRISES SLURRYING WATER AND UNDRIED CARBON BLACK PELLETS, SAID PELLETS CONTAINING FROM ABOUT 40 TO ABOUT 55 WEIGHT PERCENT WATER, OBTAINING A DISPERSION OF CARBON BLACK IN WATER, ADMIXING SAID DISPERSION WITH A RUBBER LATEX, COAGULATING THE RESULTING MIXTURE TO FORM A COAGULUM OF RUBBER, ADDING CURING AGENTS TO THE RUBBER, AND CURING THE RUBBER.
Claim 2
Independent Claim
68 words
A METHOD FOR THE MANUFACTURE OF RUBBER HAVING IMPROVED ABRASION RESISTANCE PROPERTIES WHICH COMPRISES SLURRYING WATER AND UNDRIED CARBON BLACK PELLETS, SAID PELLETS CONTAINING FROM ABOUT 40 TO ABOUT 55 WEIGHT PERCENT WATER, OBTAINING A DISPERSION OF CARBON BLACK IN WATER, ADMIXING SAID DISPERSION WITH A RUBBER LATEX, COAGULATING THE RESULTING MIXTURE TO FORM A COAGULUM OF RUBBER, ADDING CURING AGENTS TO THE RUBBER, AND CURING THE RUBBER.
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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |