US2881234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic process
Assignee: Standard Oil Co
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Filing: 1955-10-07
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Granted: 1959-04-07
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Expires: 1975-10-07
Abstract
No abstract record available.
Inventors
- 👤 Donald L Esmay
- 👤 Jr Peter Fotis
- 👤 William A Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:04
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/24; C07C2/26; C07C2/30; C07C2521/00; C07C2521/18; C07C2523/00; C07C2523/02; C07C2523/04; C07C2531/00; C07C2531/02; C07C2531/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR THE POLYMERIZATION OF AN OLEFIN FEED STOCK SELECTED FROM THE CLASS CONSISTING OF NORMALLY GAS EOUS AND NORMALLY LIQUID ALKENES HAVING AT LEAST 3 CARBON ATOMS PER MOLECULE, WHICH PROCESS COMPRISES CONTACTING SAID FEED STOCK WITH A CATALYST CONSISTING ESSENTIALLY OF AN ALKALI MATERIAL SUPPORTED UPON A POROUS ADSORBENT CARBON, SAID ALKALI MATERIALS BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALI METAL HYDRIDE, EFFECTING SAID CONTACTING AT A TEMPERATURE BETWEEN ABOUT 50*C. AND ABOUT 200*C., AND RECOVERING A POLYMER THUS PRODUCED.
Claim 2
Dependent Claim
87 words
A PROCESS FOR THE POLYMERIZATION OF AN OLEFIN FEED STOCK SELECTED FROM THE CLASS CONSISTING OF NORMALLY GAS EOUS AND NORMALLY LIQUID ALKENES HAVING AT LEAST 3 CARBON ATOMS PER MOLECULE, WHICH PROCESS COMPRISES CONTACTING SAID FEED STOCK WITH A CATALYST CONSISTING ESSENTIALLY OF AN ALKALI MATERIAL SUPPORTED UPON A POROUS ADSORBENT CARBON, SAID ALKALI MATERIALS BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALI METAL HYDRIDE, EFFECTING SAID CONTACTING AT A TEMPERATURE BETWEEN ABOUT 50*C. AND ABOUT 200*C., AND RECOVERING A 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) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |