US2888503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2, 6 dialkoxy, 4 alkyl phenol antiozidants
Assignee: Universal Oil Products Co
•
Filing: 1955-12-29
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Granted: 1959-05-26
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Expires: 1975-12-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Chenicek
- 👤 William L Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
AN EIGHT-COLORED NATURAL RUBBER NORMALLY SUBJECT TO CRACKING BY THE ACTION OF OZONE CONTAINING FROM ABOUT 0.25% TO ABOUT 10% BY WEIGHT, SUFFICIENT TO RETARD THE CRACKING EFFECT OF OZONE ON THE RUBBER, OF A 2,6-DIALKOXY4-ALKYLPHENOL IN WHICH THE ALKYL AND ALKOXY GROUPS EACH CONTAIN FROM 1 TO ABOUT 12 CARBON ATOMS.
Claim 2
Dependent Claim
52 words
AN EIGHT-COLORED NATURAL RUBBER NORMALLY SUBJECT TO CRACKING BY THE ACTION OF OZONE CONTAINING FROM ABOUT 0.25% TO ABOUT 10% BY WEIGHT, SUFFICIENT TO RETARD THE CRACKING EFFECT OF OZONE ON THE RUBBER, OF A 2,6-DIALKOXY4-ALKYLPHENOL IN WHICH THE ALKYL AND ALKOXY GROUPS EACH CONTAIN FROM 1 TO ABOUT 12 CARBON ATOMS.
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) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |