US2967846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha olefin polymers stabilized with fused ring sulfide compounds
Assignee: AT&T Inc
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Filing: 1956-11-29
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Granted: 1961-01-10
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Expires: 1976-11-29
Abstract
No abstract record available.
Inventors
- 👤 Walter L Hawkins
- 👤 Vincent L Lanza
- 👤 Field H Winslow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:23
CPC Classifications
C; C07; C07C; C07C323/00; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K5/00; C08K5/36; C08K5/37; C08K5/372; C08K5/3725; C08K5/375
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A COMPOSITION WHICH IS STABILIZED AGAINST OXIDATION COMPRISING FROM 0.5 PERCENT TO 5 PERCENT BY WEIGHT OF CARBON PARTICLES OF A MAXIMUM SIZE OF 1000 ANGSTROMS, FROM 0.01 PERCENT TO 5 PERCETN OF A COMPOUND OF THE STRUCTURE AR-S-AR'' IN WHICH AR AND AR'' ARE FUSED RING CARBOCYLIC BENZENOID AROMATIC RADICALS BOTH OF WHICH CONTAIN AT LEAST ONE SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF HYDROXYL RADICALS AND SECONDARY AMINE RADICALS AND, FURTHER, IN WHICH COMPOUND THE MAXIMUM NUMBER OF CARBON ATOMS IN EACH FUSED RING MOIETY INCLUDING SUBSTITUENTS IS 30, AND AN ESSENTIALLY SATURATED HYDROCARBON POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLUMERS OF ETHYLENE, PROPYLENE, BUTENE-1, 3-METHYL BUTENE-1, 4-METHYL PENTENE-1, 4,4DIMETHYL PENTENE-1, DODECENE-1, 3-METHYL PENTENE-1, AND MIXTURES OF ANY OF THESE MATERIALS, AND IN WHICH ALL WEIGHT PERCENTS ARE BASED ON THE SAID COMPOSITION.
Claim 2
Dependent Claim
137 words
A COMPOSITION WHICH IS STABILIZED AGAINST OXIDATION COMPRISING FROM 0.5 PERCENT TO 5 PERCENT BY WEIGHT OF CARBON PARTICLES OF A MAXIMUM SIZE OF 1000 ANGSTROMS, FROM 0.01 PERCENT TO 5 PERCETN OF A COMPOUND OF THE STRUCTURE AR-S-AR'' IN WHICH AR AND AR'' ARE FUSED RING CARBOCYLIC BENZENOID AROMATIC RADICALS BOTH OF WHICH CONTAIN AT LEAST ONE SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF HYDROXYL RADICALS AND SECONDARY AMINE RADICALS AND, FURTHER, IN WHICH COMPOUND THE MAXIMUM NUMBER OF CARBON ATOMS IN EACH FUSED RING MOIETY INCLUDING SUBSTITUENTS IS 30, AND AN ESSENTIALLY SATURATED HYDROCARBON POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLUMERS OF ETHYLENE, PROPYLENE, BUTENE-1, 3-METHYL BUTENE-1, 4-METHYL PENTENE-1, 4,4DIMETHYL PENTENE-1, DODECENE-1, 3-METHYL PENTENE-1, AND MIXTURES OF ANY OF THESE MATERIALS, AND IN WHICH ALL WEIGHT PERCENTS ARE BASED ON THE SAID COMPOSITION.
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) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |