Patent US3083244A successfully refreshed from Google Patents.
US3083244A
Expired / Lapsed
US
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Non-catalytic process for the recovery of alkylnaphthalenes in the presence of hydrogen
Assignee: Sinclair Research Inc
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Filing: 1958-07-22
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Granted: 1963-03-26
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Expires: 1978-07-22
Abstract
No abstract record available.
Inventors
- 👤 Robert A Sanford
- 👤 Henry D Ballard
- 👤 Arvin D Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:03
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/20; C07C15/24; C10; C10G; C10G47/00; C10G47/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS FOR THE RECOVERY OF ALKYLNAPHTHALENES FROM PETROLEUM HYDROCARBON MATERIALS BOILING IN THE TEMPERATURE RANGE FROM ABOUT 300 TO 800* F., SAID HYDROCARBON MATERIALS INCLUDING ABOUT 20 TO 80 WEIGHT PERCENT OF ALKYLNAPHTHALENES, THE STEP COMPRISING TREATING SAID HYDROCARBON MATERIALS IN THE PRESENCE OF HYDROGEN, IN THE ABSENCE OF A CATALYST AND UNDER THERMAL CONDITIONS INCLUDING A TEMPERATURE FROM ABOUT 1100* TO 1350* F., A HYDROCARBON PARTIAL PRESSURE FROM ABOUT 20 TO 200 P.S.I.A., A HYDROGEN PARTIAL PRESSURE FROM ABOUT 200 TO 1000 P.S.I.A., AND A CONTACT TIME FROM ABOUT 0.5 TO 200 SECONDS; SAID THERMAL CONDITIONS BEING EMPLOYED IN A RELATIONSHIP ACCORDING TO THE FOLLOWING FORMULA
Claim 2
Dependent Claim
108 words
A PROCESS FOR THE RECOVERY OF ALKYLNAPHTHALENES FROM PETROLEUM HYDROCARBON MATERIALS BOILING IN THE TEMPERATURE RANGE FROM ABOUT 300 TO 800* F., SAID HYDROCARBON MATERIALS INCLUDING ABOUT 20 TO 80 WEIGHT PERCENT OF ALKYLNAPHTHALENES, THE STEP COMPRISING TREATING SAID HYDROCARBON MATERIALS IN THE PRESENCE OF HYDROGEN, IN THE ABSENCE OF A CATALYST AND UNDER THERMAL CONDITIONS INCLUDING A TEMPERATURE FROM ABOUT 1100* TO 1350* F., A HYDROCARBON PARTIAL PRESSURE FROM ABOUT 20 TO 200 P.S.I.A., A HYDROGEN PARTIAL PRESSURE FROM ABOUT 200 TO 1000 P.S.I.A., AND A CONTACT TIME FROM ABOUT 0.5 TO 200 SECONDS; SAID THERMAL CONDITIONS BEING EMPLOYED IN A RELATIONSHIP ACCORDING TO THE FOLLOWING FORMULA
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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |