US3277071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerizing ethylene using a platinum oxide catalyst
Assignee: Atlantic Richfield Co
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Filing: 1963-05-24
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Granted: 1966-10-04
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Expires: 1983-05-24
Abstract
No abstract record available.
Inventors
- 👤 Sherwood M Cotton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:29
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A PROCESS FOR THE POLYMERIZATION OF ETHYLENE TO A SOLID POLYMER WHICH COMPRISES CONTACTING ETHYLENE UNDER POLYMERIZATION CONDTIONS WITH A CATALYST CONSISTING ESSENTIALLY OF CATALYTIC AMOUNTS OF PLATINUM OXIDE ON A SUPPORT SELECTEED FROM THE GROUP CONSISTING OF ALUMINA AND SILICA-ALUMINA.
Claim 2
Dependent Claim
41 words
A PROCESS FOR THE POLYMERIZATION OF ETHYLENE TO A SOLID POLYMER WHICH COMPRISES CONTACTING ETHYLENE UNDER POLYMERIZATION CONDTIONS WITH A CATALYST CONSISTING ESSENTIALLY OF CATALYTIC AMOUNTS OF PLATINUM OXIDE ON A SUPPORT SELECTEED FROM THE GROUP CONSISTING OF ALUMINA AND SILICA-ALUMINA.
References Cited (Backward Citations)
US2825721A
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 |