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US3830774A
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US
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Carbon black reinforced rubber compositions
Assignee: Cabot Corp
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Filing: 1973-02-16
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Granted: 1974-08-20
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Expires: 1993-02-16
Abstract
Abstract THIS DISCLOSURE RELATES TO THE USE OF A CERTAIN NOVEL CLASS OF CARBON BLACK PRODUCTS POSSESSING USUALLY HIGH TINTING STRENGTHS AS REINFORCING ADDITIVES IN THE PREPARATION OF NATURAL AND SYNTHETIC RUBBER COMPOSITIONS HAVING IMPROVED REINFORCEMENT PROPERTIES.
Inventors
- 👤 F Williams
- 👤 M Jordan
- 👤 W Burbine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:45
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C01; C01P; C01P2006/00; C01P2006/12; C01P2006/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |