US2801273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of olefins
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1952-11-26
•
Granted: 1957-07-30
•
Expires: 1972-11-26
Abstract
No abstract record available.
Inventors
- 👤 Bohlbro Hans
- 👤 Riishede Knud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:36
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/20; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1213; C07C2531/00; C07C2531/02; C07C2531/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A METHOD FOR POLYMERIZING NORMALLY GASEOUS OLEFINS TO POLYMERS BOILING IN THE GASOLINE RANGE WHICH COMPRISES CONTACTING SAID OLEFINS IN THE VAPOR PHASE AT A TEMPERATURE BELOW ABOUT 100*C. WITH A SUPPORTED CATALYST COMPRISING A COMPLEX OF BORON FLUORIDE WITH A SATURATED HYDROXY CARBOXYLIC ACID HAVING NO MORE THAN 7 CARBON ATOMS IN THE MOLECULE, THE MOL RATIO OF SAID BORON FLOUORIDE TO SAID ORGANIC COMPOUND IN SAID COMPLEX BRING AT LEAST 1:1.
Claim 2
Independent Claim
73 words
A METHOD FOR POLYMERIZING NORMALLY GASEOUS OLEFINS TO POLYMERS BOILING IN THE GASOLINE RANGE WHICH COMPRISES CONTACTING SAID OLEFINS IN THE VAPOR PHASE AT A TEMPERATURE BELOW ABOUT 100*C. WITH A SUPPORTED CATALYST COMPRISING A COMPLEX OF BORON FLUORIDE WITH A SATURATED HYDROXY CARBOXYLIC ACID HAVING NO MORE THAN 7 CARBON ATOMS IN THE MOLECULE, THE MOL RATIO OF SAID BORON FLOUORIDE TO SAID ORGANIC COMPOUND IN SAID COMPLEX BRING AT LEAST 1:1.
References Cited (Backward Citations)
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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) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |