US3699071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High modulus composition comprising hydrocarbon oil,rubber and carbon black
Assignee: Sunoco Inc
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Filing: 1969-01-17
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Granted: 1972-10-17
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Expires: 1989-01-17
Abstract
Abstract A NOVEL RUBBER VULCANIZATE COMPRISES CARBON BLACK DISPERSED IN RUBBER, SUCH AS BUTYL RUBBER, ETHYLENE-PROPYLENE RUBBER, EPDM RUBBERS, OR IN MIXTURES OF SUCH RUBBERS, ANS AS A PLASTICIZER OR EXTENDER, A PETROLEUM HYDROCARBON OIL CONTAINING 45 TO 85 WEIGHT PERCENT AROMATICS AND NO MORE THAN 0.5 WEIGHT PERCENT POLAR COMPOUNDS. AT A GIVEN LEVEL OF CURE, SUCH A NOVEL RUBBER COMPOSITION HAS HIGHER TENSILE STRENGTH AND MODULUS THAN A SIMILAR COMPOSITIONS WHEREIN THE HYDROCARBON OIL CONTAINS THE SAME PERCENTAGE OF AROMATICS AND A GREATER PERCENTAGE OF POLAR COMPOUNDS.
Inventors
- 👤 Ivor W Mills
- 👤 Glenn R Dimeler
- 👤 Merritt C Kirk Jr
- 👤 Jackson S Boyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:38
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/06; C08K3/18; C08K3/20; C08K3/22; C08L; C08L23/00; C08L23/02; C08L23/16; C08L91/00; C08L2312/00; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |