US3222336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of ethylene and vinyl stearate
Assignee: Millennium Petrochemicals Inc
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Filing: 1963-02-05
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Granted: 1965-12-07
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Expires: 1983-02-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas S Heines
- 👤 Donaldson Charles Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:54
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/04; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR COPOLYMERIZING ETHYLENE AND VINYL STEARATE WHICH CONSISTS REACTING A MIXTURE OF ETHYLENE AND ABOUT 0.1 ABOUT 15 WEIGHT PERCENT, BASED ON THE ETHYLENE FEED, OF VINYL STEARATE AT A TEMPERATURE BETWEEN ABOUT 250* AND 500*F. AND A PRESSURE OF ABOUT 18,000 TO ABOUT 45,000 POUNDS PER SQUARE INCH IN THE PRESENCE OF AN ORGANIC PEROXIDE COPOLYMERIZATION CATALYST IN A STIRRED CLOSED REACTION ZONE.
Claim 2
Dependent Claim
66 words
A PROCESS FOR COPOLYMERIZING ETHYLENE AND VINYL STEARATE WHICH CONSISTS REACTING A MIXTURE OF ETHYLENE AND ABOUT 0.1 ABOUT 15 WEIGHT PERCENT, BASED ON THE ETHYLENE FEED, OF VINYL STEARATE AT A TEMPERATURE BETWEEN ABOUT 250* AND 500*F. AND A PRESSURE OF ABOUT 18,000 TO ABOUT 45,000 POUNDS PER SQUARE INCH IN THE PRESENCE OF AN ORGANIC PEROXIDE COPOLYMERIZATION CATALYST IN A STIRRED CLOSED REACTION ZONE.
References Cited (Backward Citations)
US2342400A
Cited
GB569927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |