US2681899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized isoolefin polyolefin interpolymer derivatives and method of producing same
Assignee: Goodrich Corp
•
Filing: 1952-09-05
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Granted: 1954-06-22
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Expires: 1972-09-05
Abstract
No abstract record available.
Inventors
- 👤 Richard A Crawford
- 👤 Richard T Morrissey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:24
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE METHOD OF STABILIZING AN INTERPOLYMER OF AN ISOOLEFINIC HYDROCARBON CONTAINING 4 TO 8 CARBON ATOMS AND A TERMINAL METHYLENE GROUP AND A POLYOLEFINIC HYDROCARBON CONTAINING AT LEAST 0.5% BY WEIGHT OF COMBINED BROMINE OF ADDITION WHICH COMPRISES INCORPORATING THEREIN A SILICATE OF A METAL OCCURRING IN GROUP II OF THE PERIODIC TABLE.
Claim 2
Independent Claim
53 words
THE METHOD OF STABILIZING AN INTERPOLYMER OF AN ISOOLEFINIC HYDROCARBON CONTAINING 4 TO 8 CARBON ATOMS AND A TERMINAL METHYLENE GROUP AND A POLYOLEFINIC HYDROCARBON CONTAINING AT LEAST 0.5% BY WEIGHT OF COMBINED BROMINE OF ADDITION WHICH COMPRISES INCORPORATING THEREIN A SILICATE OF A METAL OCCURRING IN GROUP II OF THE PERIODIC TABLE.
References Cited (Backward Citations)
US2179973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-21 | 1957-12-21 | 1958-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-21 | 1961-12-21 | 1962-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-21 | 1965-12-21 | 1966-06-22 | $7700.00 | Window Closed / Lapsed |