US2912422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic process
Assignee: Standard Oil Co
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Filing: 1954-09-30
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Granted: 1959-11-10
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Expires: 1974-09-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Peter Fotis
- 👤 Donald L Esmay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:29
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS FOR PRODUCING A SOLID POLYMERIC MATERIAL, WHICH PROCESS COMPRISES CONTACTING ETHYLENE WITH A CATALYST CONSISTING OF THE HYDRIDE OF AN ALKALI METAL HAVING AN ATOMIC NUMBER OF AT LEAST 11 AND AN ABSORBENT ALUMINA-CONTAINING MATERIAL SELECTED FROM THE CLASS CONSISTING OF GAMMA-ALUMINA, ARGILLACEOUS MATERIALS, SYNTHETIC SILICA-ALUMINA COMPOSITES AND FLUORIDED ALUMINA, EFFECTING SAID CONTACTING AT A TEMPERATURE BETWEEN ABOUT 50*C, AND ABOUT 250*C, FOR A PERIOD OF TIME SUFFICIENT TO EFFECT A SUBSTANTIAL CONVERSION OF ETHYLENE TO FORM A SOLID POLYMER, AND RECOVERING A SOLID POLYMER THUS PRODUCED.
Claim 2
Dependent Claim
89 words
A PROCESS FOR PRODUCING A SOLID POLYMERIC MATERIAL, WHICH PROCESS COMPRISES CONTACTING ETHYLENE WITH A CATALYST CONSISTING OF THE HYDRIDE OF AN ALKALI METAL HAVING AN ATOMIC NUMBER OF AT LEAST 11 AND AN ABSORBENT ALUMINA-CONTAINING MATERIAL SELECTED FROM THE CLASS CONSISTING OF GAMMA-ALUMINA, ARGILLACEOUS MATERIALS, SYNTHETIC SILICA-ALUMINA COMPOSITES AND FLUORIDED ALUMINA, EFFECTING SAID CONTACTING AT A TEMPERATURE BETWEEN ABOUT 50*C, AND ABOUT 250*C, FOR A PERIOD OF TIME SUFFICIENT TO EFFECT A SUBSTANTIAL CONVERSION OF ETHYLENE TO FORM A SOLID POLYMER, AND RECOVERING A SOLID POLYMER THUS PRODUCED.
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) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |