Patent US2998468A successfully refreshed from Google Patents.
US2998468A
Expired / Lapsed
US
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Method of preserving natural rubber by adding thereto 2:2:4-trimethyl-decahydroquinoline and a substituted phenol
Assignee: Monsanto Chemicals Ltd
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Filing: 1957-08-06
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Granted: 1961-08-29
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Expires: 1977-08-06
Abstract
No abstract record available.
Inventors
- 👤 Wilde Bertrand Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:24
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3437
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A METHOD OF RENDERING NATURAL RUBBER RESISTANT TO DETERIORATION WHICH COMPRISES INCORPORATING IN SAID RUBBER AS ANTIOXIDANT 2:2:4-TRIMETHYL-DECAHYDROQUINOLINE.
Claim 2
Independent Claim
18 words
A METHOD OF RENDERING NATURAL RUBBER RESISTANT TO DETERIORATION WHICH COMPRISES INCORPORATING IN SAID RUBBER AS ANTIOXIDANT 2:2:4-TRIMETHYL-DECAHYDROQUINOLINE.
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) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |