US3004962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerization of 1-olefins
Assignee: Hercules Powder Co
•
Filing: 1957-05-27
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Granted: 1961-10-17
•
Expires: 1977-05-27
Abstract
No abstract record available.
Inventors
- 👤 Albert S Matlack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:31
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE PROCESS OF POLYMERIZING A 1-OLEFIN WHICH COMPRISES CONTACTING SAID OLEFIN, AT A TEMPERATURE OF FROM ABOUT 20* C. TO ABOUT 60* C., WITH THE CATALYST FORMED IN SITU BY MIXING A METAL, HAVING A PARTICLE SIZE OF FROM ABOUT 1 MICRON TO ABOUT 100 MICRONS AND SELECTED FROM THE GROUP CONSISTING OF THE GROUP IV-B AND GROUP V-B METALS OF THE PERIODIC TABLE, WITH FROM ABOUT 0.05% TO ABOUT 20% BASED ON THE WEIGHT OF OLEFIN, OF AN INORGANIC HALIDE SELECTED FROM THE GROUP CONSISTING OF HALOGENS, HYDROGEN HALIDES, AND TRI- AND TETRA-HALIDES OF SAID GROUP IV-B AND V-B METALS, SAID METALS BEING PRESENT IN AN AMOUNT IN MOLAR EXCESS OF THE AMOUNT OF SAID INORGANIC HALIDE.
Claim 2
Dependent Claim
118 words
THE PROCESS OF POLYMERIZING A 1-OLEFIN WHICH COMPRISES CONTACTING SAID OLEFIN, AT A TEMPERATURE OF FROM ABOUT 20* C. TO ABOUT 60* C., WITH THE CATALYST FORMED IN SITU BY MIXING A METAL, HAVING A PARTICLE SIZE OF FROM ABOUT 1 MICRON TO ABOUT 100 MICRONS AND SELECTED FROM THE GROUP CONSISTING OF THE GROUP IV-B AND GROUP V-B METALS OF THE PERIODIC TABLE, WITH FROM ABOUT 0.05% TO ABOUT 20% BASED ON THE WEIGHT OF OLEFIN, OF AN INORGANIC HALIDE SELECTED FROM THE GROUP CONSISTING OF HALOGENS, HYDROGEN HALIDES, AND TRI- AND TETRA-HALIDES OF SAID GROUP IV-B AND V-B METALS, SAID METALS BEING PRESENT IN AN AMOUNT IN MOLAR EXCESS OF THE AMOUNT OF SAID INORGANIC HALIDE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |