US3017402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of ethylene with molybdenumoxide on silica-alumina catalyst
Assignee: Shell USA Inc
•
Filing: 1958-05-28
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Granted: 1962-01-16
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Expires: 1978-05-28
Abstract
No abstract record available.
Inventors
- 👤 Willem F Engel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:32
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE PROCESS WHICH COMPRISES JPOLYMERIZING ETHYLENE AT A TEMPERATURE BETWEEN ABOUT 50*C. AND ABOUT 350* C. AND PRESSURES RANGING FROM ABOUT NORMAL PRESSURE TO ABOUT 500 ATMOPPHERES IN THE PRESENCE OF A CATALYST COMPOSITION CONSISTING ESSENTIALLY OF FROM 35 TO 95% OF SILICA FORM 5 TO 65% ALUMINA, AND FROPM 0.1 TO 10% OF MOLYBDENUM OXIDE, SAID MOLYBDENUM OXIDE HAVING BEEN TREATED EITH HYDROGEN AT A TEMPEARTURE OF BETWEEN 400 AND 550*C. AND A PRESSURE BETWEEN 5 AND 50 ATMOSPHERES FOR A TIME SUFFICIENT TO REDUCE THE MOLYBDENUM TO A VALENCE OF LESS THAN 6.
Claim 2
Dependent Claim
95 words
THE PROCESS WHICH COMPRISES JPOLYMERIZING ETHYLENE AT A TEMPERATURE BETWEEN ABOUT 50*C. AND ABOUT 350* C. AND PRESSURES RANGING FROM ABOUT NORMAL PRESSURE TO ABOUT 500 ATMOPPHERES IN THE PRESENCE OF A CATALYST COMPOSITION CONSISTING ESSENTIALLY OF FROM 35 TO 95% OF SILICA FORM 5 TO 65% ALUMINA, AND FROPM 0.1 TO 10% OF MOLYBDENUM OXIDE, SAID MOLYBDENUM OXIDE HAVING BEEN TREATED EITH HYDROGEN AT A TEMPEARTURE OF BETWEEN 400 AND 550*C. AND A PRESSURE BETWEEN 5 AND 50 ATMOSPHERES FOR A TIME SUFFICIENT TO REDUCE THE MOLYBDENUM TO A VALENCE OF LESS THAN 6.
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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) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |