US3340316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of aromatic hydrocarbons using an improved activated carbon sorbent
Assignee: Universal Oil Products Co
•
Filing: 1964-06-19
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Granted: 1967-09-05
•
Expires: 1984-06-19
Abstract
No abstract record available.
Inventors
- 👤 Richard C Wackher
- 👤 Frederick C Ramquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:14
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
60 words
A METHOD FOR SEPARATING AN AROMATIC FROM A FLUID MIXTURE CONTAINING THE SAME WHICH COMPRISES CONTACTING SAID MIXTURE WITH ACTIVATED CARBON CONTAINING AT LEAST ONE POLAR FLUORIDE MOLECULE HAVING A CATION SELECTED FROM AMMONIUM AND ELEMENTS OF THE GROUP CONSISTING OF GROUPS I, II AND III OF THE PERIODIC TABLE TO INCREASE THE SELECTIVITY OF THE ACTIVATED CARBON FOR AROMATICS.
Claim 2
Independent Claim
60 words
A METHOD FOR SEPARATING AN AROMATIC FROM A FLUID MIXTURE CONTAINING THE SAME WHICH COMPRISES CONTACTING SAID MIXTURE WITH ACTIVATED CARBON CONTAINING AT LEAST ONE POLAR FLUORIDE MOLECULE HAVING A CATION SELECTED FROM AMMONIUM AND ELEMENTS OF THE GROUP CONSISTING OF GROUPS I, II AND III OF THE PERIODIC TABLE TO INCREASE THE SELECTIVITY OF THE ACTIVATED CARBON FOR AROMATICS.
Claim 3
Dependent Claim
62 words
A PROCESS FOR THE SEPARATION OF A POLYNUCLEAR AROMATIC FROM A FLUID MIXTURE CONTAINING MONONUCLEAR AND POLYNUCLEAR AROMATICS WHICH COMPRISES CONTACTING SAID MIXTURE WITH ACTIVATED CARBON AT LEAST ONE POLAR FLUORIDE MOLECULE HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKALI METALS, ALKALINE EARTH METALS, AMMONIUM, BORON AND ALUMINUM TO INCREASE THE SELECTIVITY OF THE ACTIVATED CARBON FOR POLYNUCLEAR AROMATICS.
Claim 4
Dependent Claim
62 words
A PROCESS FOR THE SEPARATION OF A POLYNUCLEAR AROMATIC FROM A FLUID MIXTURE CONTAINING MONONUCLEAR AND POLYNUCLEAR AROMATICS WHICH COMPRISES CONTACTING SAID MIXTURE WITH ACTIVATED CARBON AT LEAST ONE POLAR FLUORIDE MOLECULE HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKALI METALS, ALKALINE EARTH METALS, AMMONIUM, BORON AND ALUMINUM TO INCREASE THE SELECTIVITY OF THE ACTIVATED CARBON FOR POLYNUCLEAR AROMATICS.
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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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |