US2969343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylidene bis-indanols as deterioration retarders for rubbers
Assignee: Goodrich Corp
•
Filing: 1956-09-10
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Granted: 1961-01-24
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Expires: 1976-09-10
Abstract
No abstract record available.
Inventors
- 👤 Roger E Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:22
CPC Classifications
C; C07; C07C; C07C39/00; C07C39/12; C07C39/17; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/08; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A SULFUR-VULCANIZED RUBBERY COMPOSITION HAVING HIGHLY EFFICIENT ANTI-FLEX-CRACKING PROPERTIES AND SUPERIOR HEAT-STABILIZING PROPERTIES, WHICH COMPOSITION COMPRISES A VULCANIZED RUBBERY DIOLEFINIC POLYMER HAVING DISPERSED THEREIN FROM 0.3 TO 10.0 WEIGHT PERCENT ON THE SAID POLYMER OF AN ALKYLIDENE-BRIDGED BIS-INDANOL OF THE GENERAL FORMULA
Claim 2
Dependent Claim
42 words
A SULFUR-VULCANIZED RUBBERY COMPOSITION HAVING HIGHLY EFFICIENT ANTI-FLEX-CRACKING PROPERTIES AND SUPERIOR HEAT-STABILIZING PROPERTIES, WHICH COMPOSITION COMPRISES A VULCANIZED RUBBERY DIOLEFINIC POLYMER HAVING DISPERSED THEREIN FROM 0.3 TO 10.0 WEIGHT PERCENT ON THE SAID POLYMER OF AN ALKYLIDENE-BRIDGED BIS-INDANOL OF THE GENERAL FORMULA
References Cited (Backward Citations)
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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) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |