US2802810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nu, nu-bis-(hydroxy-dialkyl-benzyl)-alkylamines as rubber antioxidants
Assignee: Uniroyal Inc
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Filing: 1954-05-28
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Granted: 1957-08-13
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Expires: 1974-05-28
Abstract
No abstract record available.
Inventors
- 👤 John C Bill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:21
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A METHOD OF PRESERVING RUBBERS SELECTED FROM THE CLASS CONSISTING OF NATURAL AND SULFUR-VULCANIZABLE UNSATURATED SYNTHETIC RUBBERS WHICH ARE SUSCEPTIBLE TO DETERIORATION BY HEAT, LIGHT AND OXYGEN WHICH COMPRISES INCORPORATING THEREIN AN ANTITOXIDANT PROPORTION OF AN N,N-BIS-(-2-HYDROXY-3,5-DIALKYL BENZYL) ALKYLAMINE HAVING THE FORMULA
Claim 2
Independent Claim
42 words
A METHOD OF PRESERVING RUBBERS SELECTED FROM THE CLASS CONSISTING OF NATURAL AND SULFUR-VULCANIZABLE UNSATURATED SYNTHETIC RUBBERS WHICH ARE SUSCEPTIBLE TO DETERIORATION BY HEAT, LIGHT AND OXYGEN WHICH COMPRISES INCORPORATING THEREIN AN ANTITOXIDANT PROPORTION OF AN N,N-BIS-(-2-HYDROXY-3,5-DIALKYL BENZYL) ALKYLAMINE HAVING THE FORMULA
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |