Patent US2962536A successfully refreshed from Google Patents.
US2962536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of polycyclic aromatic hydrocarbons from high molecular weight paraffins
Assignee: Atlantic Richfield Co
•
Filing: 1958-04-09
•
Granted: 1960-11-29
•
Expires: 1978-04-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Paul M Pitts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:32
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/373; C07C5/393; C07C5/41; C07C5/415; C07C5/417
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A METHOD FOR COVERING SOLELY BY DEHYDROCYCLIZATION REACTIONS 12 CARBON ATOM TO 20 CARBON ATOM PARAFFINIC HYDROCARBONS SELECTED FROM THE GROUP CONSISTING ING OF 12 CARBON ATOM TO 20 CARBON ATOM STRAIGHT-CHAIN AND 12 CARBON ATOM TO 20 CARBON ATOM BRANCHED-CHAIN PARAFFINIC HYDROCARBONS INTO POLYCYCLIC AROMATIC HYDROCARBONS WHICH COMPRISES CONTACTING THE 12 CARBON ATOM TO 20 CARBON ATOM PARAFFINIC HYDROCARBONS IN THE PRESENCE OF EXCESS HYDROGEN WITH A CATALYST CONSISTING ESSENTIALLY OF PLATINUM ASSOCIATED WITH AN ACIDIC METAL OXIDE COMPONENT AT A TEMPERATURE BETWEEN 750*F. AND 950*F., A PRESSURE BETWEEN 150 AND 500 POUNDS PER SQUARE INCH, A LIQUID HOURLY SPACE VELOCITY BETWEEN 1.0 AND 6.0 VOLUMES OF CHARGE PER VOLUME OF CATALYST PER HOUR AND A HYDROGEN TO HYDROCARBON MOL RATIO OF BETWEEN 5:1 AND 25:1.
Claim 2
Independent Claim
127 words
A METHOD FOR COVERING SOLELY BY DEHYDROCYCLIZATION REACTIONS 12 CARBON ATOM TO 20 CARBON ATOM PARAFFINIC HYDROCARBONS SELECTED FROM THE GROUP CONSISTING ING OF 12 CARBON ATOM TO 20 CARBON ATOM STRAIGHT-CHAIN AND 12 CARBON ATOM TO 20 CARBON ATOM BRANCHED-CHAIN PARAFFINIC HYDROCARBONS INTO POLYCYCLIC AROMATIC HYDROCARBONS WHICH COMPRISES CONTACTING THE 12 CARBON ATOM TO 20 CARBON ATOM PARAFFINIC HYDROCARBONS IN THE PRESENCE OF EXCESS HYDROGEN WITH A CATALYST CONSISTING ESSENTIALLY OF PLATINUM ASSOCIATED WITH AN ACIDIC METAL OXIDE COMPONENT AT A TEMPERATURE BETWEEN 750*F. AND 950*F., A PRESSURE BETWEEN 150 AND 500 POUNDS PER SQUARE INCH, A LIQUID HOURLY SPACE VELOCITY BETWEEN 1.0 AND 6.0 VOLUMES OF CHARGE PER VOLUME OF CATALYST PER HOUR AND A HYDROGEN TO HYDROCARBON MOL RATIO OF BETWEEN 5:1 AND 25:1.
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) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |