US3012023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of olefin polymers
Assignee: EIDP Inc
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Filing: 1955-01-25
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Granted: 1961-12-05
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Expires: 1975-01-25
Abstract
No abstract record available.
Inventors
- 👤 Anderson Arthur William
- 👤 Jr John Macmillan Bruce
- 👤 Merckling Nicholas George
- 👤 Truett William Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:08
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN A PROCESS FOR PREPARING NORMALLY SOLID POLYETHYLENE BY POLYMERIZING ETHYLENE IN THE PRESENCE OF AN INITIATOR WHICH SUPPLIES METAL-CONTAINING GROUPS TO THE POLYMER, SAID INITIATOR BEING THE PRODUCT OBTAINED BY ADMIXING A COMPONENT CONTAINING A MEMBER OF THE CLASS CONSISTING OF TITANIUM AND ZIRCONIUM, ATTACHED TO A GROUP OF THE CLASS CONSISTING OF -OXYHYDROCARBON AND -HALIDE, WITH A SECOND COMPONENT HAVING -HYDROCARBON ATTACHED, DIRECTLY TO METAL, SAID METAL BEING OF THE CLASS CONSISTING OF ALKALI METALS, ALKALINE EARTH METALS AND ALUMINUM, THE IMPROVEMENT WHICH COMPRISES REMOVING SUCH GROUPS FROM THE POLYMER MOLECULE BY A REACTANT WHICH IS CAPABLE OF SPLITTING METAL-HYDROCARBON BONDS, SAID METAL BEING A MEMBER OF THE CLASS CONSISTING OF TITANIUM AND ZIRCONIUM, SAID REACTANT BEING OF THE CLASS CONSISTING OF OXYGEN, WATER, AND ALCOHOLS OF THE FORMULA CNH2N+1OH WHEREIN N IS A NUMBER FROM 1 TO 4 INCLUSIVE.
Claim 2
Dependent Claim
142 words
IN A PROCESS FOR PREPARING NORMALLY SOLID POLYETHYLENE BY POLYMERIZING ETHYLENE IN THE PRESENCE OF AN INITIATOR WHICH SUPPLIES METAL-CONTAINING GROUPS TO THE POLYMER, SAID INITIATOR BEING THE PRODUCT OBTAINED BY ADMIXING A COMPONENT CONTAINING A MEMBER OF THE CLASS CONSISTING OF TITANIUM AND ZIRCONIUM, ATTACHED TO A GROUP OF THE CLASS CONSISTING OF -OXYHYDROCARBON AND -HALIDE, WITH A SECOND COMPONENT HAVING -HYDROCARBON ATTACHED, DIRECTLY TO METAL, SAID METAL BEING OF THE CLASS CONSISTING OF ALKALI METALS, ALKALINE EARTH METALS AND ALUMINUM, THE IMPROVEMENT WHICH COMPRISES REMOVING SUCH GROUPS FROM THE POLYMER MOLECULE BY A REACTANT WHICH IS CAPABLE OF SPLITTING METAL-HYDROCARBON BONDS, SAID METAL BEING A MEMBER OF THE CLASS CONSISTING OF TITANIUM AND ZIRCONIUM, SAID REACTANT BEING OF THE CLASS CONSISTING OF OXYGEN, WATER, AND ALCOHOLS OF THE FORMULA CNH2N+1OH WHEREIN N IS A NUMBER FROM 1 TO 4 INCLUSIVE.
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) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |