US3288749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of rubber with a mixture of phenylene diamines and diaminodiphenyl ethers or thioethers
Assignee: Universal Oil Products Co
•
Filing: 1965-09-16
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Granted: 1966-11-29
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Expires: 1985-09-16
Abstract
No abstract record available.
Inventors
- 👤 William L Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:12
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; C08K5/36; C08K5/37; C08K5/372; C08K5/3725; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A MIXTURE OF FROM ABOUT 50% TO ABOUT 90% BY WEIGHT OF AN N,N''-DI-SEC-ALKYL-P-PHENYLENE DIAMINE IN WHICH EACH OF THE ALKYL GROUPS CONTAINS FROM 6 TO 12 CARBON ATOMS AND FROM ABOUT 50% TO ABOUT 10% BY WEIGHT OF A DIAMINODIPHENYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF BIS-4,4''-SEC-ALKYL-AMINODIPHENYL ETHER AND BIS-4,4''-SEC-ALKYL-AMINODIPHENYL SULFIDE, EACH ALKYL GROUP OF SAID DIAMINODIPHENYL COMPOUND CONTAINING FROM 3 TO 20 CARBON ATOMS.
Claim 2
Dependent Claim
67 words
A MIXTURE OF FROM ABOUT 50% TO ABOUT 90% BY WEIGHT OF AN N,N''-DI-SEC-ALKYL-P-PHENYLENE DIAMINE IN WHICH EACH OF THE ALKYL GROUPS CONTAINS FROM 6 TO 12 CARBON ATOMS AND FROM ABOUT 50% TO ABOUT 10% BY WEIGHT OF A DIAMINODIPHENYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF BIS-4,4''-SEC-ALKYL-AMINODIPHENYL ETHER AND BIS-4,4''-SEC-ALKYL-AMINODIPHENYL SULFIDE, EACH ALKYL GROUP OF SAID DIAMINODIPHENYL COMPOUND CONTAINING FROM 3 TO 20 CARBON ATOMS.
References Cited (Backward Citations)
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Cited
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Cited
US2128944A
Cited
US2097473A
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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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |