US3197518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interconversion of hydrocarbon ring compounds
Assignee: Ashland LLC
•
Filing: 1962-04-04
•
Granted: 1965-07-27
•
Expires: 1982-04-04
Abstract
No abstract record available.
Inventors
- 👤 Duane K Chapman
- 👤 George J Rozman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:04
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2772; C07C2/00; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/18; C07C4/26; C07C5/02; C07C5/13; C07C5/32; C07C5/367; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/16; C07C2523/24; C07C2523/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
74 words
A METHOD OF CONVERTING POLYCYCLIC HYDROCARBON COMPOUNDS, COMPRISING SUBJECTING A FEED CONTAINING AT LEAST ONE POLYCYCLIC HYDROCARBON COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACENAPHTHENE, ANTHRACENE, BIPHENYL, FLUORENE, INDANE, PHENATHRENE, PHENYLNAPHTHALENE AND TETRAHYDRONAPHTHALENE TO CONVERSION IN THE PRESENCE OF HYDROGEN AND A CATALYST COMPRISING CHROMIA ON ALUMINA AT A TEMPERATURE OF ABOUT 1200* TO 1400*F., A PRESSURE OF ABOUT 100 TO 1000 P.S.I. AND A WEIGHT HOURLY SPACE VELOCITY OF ABOUT 0.5 TO 2.0.
Claim 2
Independent Claim
74 words
A METHOD OF CONVERTING POLYCYCLIC HYDROCARBON COMPOUNDS, COMPRISING SUBJECTING A FEED CONTAINING AT LEAST ONE POLYCYCLIC HYDROCARBON COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACENAPHTHENE, ANTHRACENE, BIPHENYL, FLUORENE, INDANE, PHENATHRENE, PHENYLNAPHTHALENE AND TETRAHYDRONAPHTHALENE TO CONVERSION IN THE PRESENCE OF HYDROGEN AND A CATALYST COMPRISING CHROMIA ON ALUMINA AT A TEMPERATURE OF ABOUT 1200* TO 1400*F., A PRESSURE OF ABOUT 100 TO 1000 P.S.I. AND A WEIGHT HOURLY SPACE VELOCITY OF ABOUT 0.5 TO 2.0.
Claim 3
Independent Claim
66 words
THE METHOD OF SYNTHESIZING POLYCYCLIC HYDROCARBON RING COMPOUNDS COMPRISING SUBJECTING A PETROLEUM CATALYTIC REFORMATE HAVING AN END BOILING POINT IN THE RANGE OF ABOUT 500-700*F. TO CONVERSION IN HE PRESENCE OF HYDROGEN AND A CATALYST WHICH COMPRISES 5-25% BY WEIGHT CHROMIA ON AN ALUMINA SUPPORT AT A TEMPERATURE OF ABOUT 1200-1400*F., A WEIGHT HOURLY SPACE VELOCITY OF ABOUT 0.5-2.0, AND A PRESSURE OF ABOUT 100-10000 P.S.I.
Claim 4
Independent Claim
66 words
THE METHOD OF SYNTHESIZING POLYCYCLIC HYDROCARBON RING COMPOUNDS COMPRISING SUBJECTING A PETROLEUM CATALYTIC REFORMATE HAVING AN END BOILING POINT IN THE RANGE OF ABOUT 500-700*F. TO CONVERSION IN HE PRESENCE OF HYDROGEN AND A CATALYST WHICH COMPRISES 5-25% BY WEIGHT CHROMIA ON AN ALUMINA SUPPORT AT A TEMPERATURE OF ABOUT 1200-1400*F., A WEIGHT HOURLY SPACE VELOCITY OF ABOUT 0.5-2.0, AND A PRESSURE OF ABOUT 100-10000 P.S.I.
References Cited (Backward Citations)
US2232761A
Cited
US2420143A
Cited
US2414118A
Cited
US2526895A
Cited
US2531328A
Cited
US2658089A
Cited
US2653176A
Cited
US2775629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |