Patent US3226352A successfully refreshed from Google Patents.
US3226352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene polymerization in nonionic emulsion systems
Assignee: Gulf Oil Corp
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Filing: 1964-12-24
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Granted: 1965-12-28
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Expires: 1984-12-24
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Helin
- 👤 Gerald J Mantell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:52
CPC Classifications
C; C08; C08F; C08F8/00; C08F10/00; C08F283/00; C08F283/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
THE METHOD OF PREPARING A STABLE AQUEOUS EMULSION OF POLYETHYLENE IN ONE STEP COMPRISING POLYMERIZING ETHYLENE IN AN AQUEOUS MEDIUM CONTAINING DISSOLVED THEREIN A WATER SOLUBLE PERSULFATE POLYMERIZATION INITIATOR AND AN EMULSIFYING AGENT CONSISTING ESSENTIALLY OF A NON-IONIC COMPOUND OF THE FORMULA
Claim 2
Independent Claim
42 words
THE METHOD OF PREPARING A STABLE AQUEOUS EMULSION OF POLYETHYLENE IN ONE STEP COMPRISING POLYMERIZING ETHYLENE IN AN AQUEOUS MEDIUM CONTAINING DISSOLVED THEREIN A WATER SOLUBLE PERSULFATE POLYMERIZATION INITIATOR AND AN EMULSIFYING AGENT CONSISTING ESSENTIALLY OF A NON-IONIC COMPOUND OF 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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |