US3277070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and catalyst for polymerization of olefins
Assignee: Solvay SA
•
Filing: 1963-03-14
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Granted: 1966-10-04
•
Expires: 1983-03-14
Abstract
No abstract record available.
Inventors
- 👤 Robert Van Weynbergh
- 👤 Stevens Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:14
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PROCESS WHICH COMPRISES POLYMERIZING AT LEAST ONE 1-OLEFIN TO SOLID POLYMER IN THE PRESENCE OF A CATALYST WHICH FORMS ON MIXING A SUPPORTED OXYGENATED COMPOUND OF CHROMIUM, AT LEAST PART OF THE CHROMIUM BEING HEXAVALENT, WITH AT LEAST ONE COMPLEX ORGANOMETAL COMPOUND OF THE GREATER FORMULA
Claim 2
Dependent Claim
47 words
A PROCESS WHICH COMPRISES POLYMERIZING AT LEAST ONE 1-OLEFIN TO SOLID POLYMER IN THE PRESENCE OF A CATALYST WHICH FORMS ON MIXING A SUPPORTED OXYGENATED COMPOUND OF CHROMIUM, AT LEAST PART OF THE CHROMIUM BEING HEXAVALENT, WITH AT LEAST ONE COMPLEX ORGANOMETAL COMPOUND OF THE GREATER FORMULA
References Cited (Backward Citations)
US2824089A
Cited
US3105066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |