US3048574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerizing lower olefins
Assignee: Hoechst AG
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Filing: 1958-07-14
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Granted: 1962-08-07
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Expires: 1978-07-14
Abstract
No abstract record available.
Inventors
- 👤 Wiberg Egon
- 👤 Hartwimmer Robert
- 👤 Gumboldt Albert Gustav Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:55
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
84 words
IN A PROCESS FOR THE PREPARATION OF A LINEAR HIGH MOLECULAR WEIGHT OLEFIN POLYMER BY THE LOW PRESSURE POLYMERIZATION OF AN A-MONOOLEFIN OF 2-12 CARBON ATOMS, THE STEP OF EMPLOYING AS THE CATALYST THE REACTION PRODUCT OF A COMPOUND OF THE METALS SELECTED FROM SUBGROUPS 1VA-VA OF THE MENDELEEF PERIODIC TABLE WITH A SILANE CONTAINING A SILCON-TO-HYDROGEN BOND AND ALSO CONTAINING SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF OXYGEN, ALKOXY, AMINE AND HALOGEN SUBSTITUENTS, THESE TWO INGREDIENTS BEING THE SOLE COMPONENTS OF THE CATALYST.
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) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |