Patent US2942041A successfully refreshed from Google Patents.
US2942041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of methyl indene
Assignee: Atlantic Richfield Co
•
Filing: 1958-04-09
•
Granted: 1960-06-21
•
Expires: 1978-04-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Paul M Pitts
- 👤 Frank G Ciapetta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:54
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; C; C07; C07C; C07C5/00; C07C5/32; C07C5/373; B01J21/00; B01J21/06; B01J21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A METHOD FOR CONVERTING TETRALIN INTO METHYL INDENE WHICH COMPRISES CONTACTING THE TETRALIN WITH A CATALYST CONSISTING ESSENTIALLY OF PLATINUM ASSOCIATED WITH A SILICAALUMINA CRACKING COMPONENT AT A TEMPERATURE BETWEEN 600*F. AND 1000*F., A PRESSURE BETWEEN 100 AND 750 POUNDS PER SQUARE INCH, A LIQUID HOURLY SPACE VELOCITY BETWEEN 0.5 AND 10 VOLUMES OF CHARGE PER VOLUME OF CATALYST PER HOUR AND A HYDROGEN TO HYDROCARBON MOLE RATIO OF BETWEEN 2:1 AND 40:1, THE SAID SILICA-ALUMINA CRACKING COMPONENT HAVING AN ALUMINA CONTENT OF FROM 7 PERCENT TO 30 PERCENT BY WEIGHT AND HAVING A CATALYTIC CRACKING ACTIVITY WITHIN A RANGE FROM 35 TO 95 AS COMPARED WITH A THEORETICAL MAXIMUM CATALYTIC CRACKING ACTIVITY OF 100 AND A PRACTICABLE MAXIMUM CATALYTIC CRACKING ACTIVITY OF BETWEEN 90 AND 95 ON A DISTILLATE-PLUS-LOSS SCALE FOR THE MEASUREMENT OF THE CATALYTIC CRACKING ACTIVITY OF A CRACKING CATALYST AND THE SAID PLATINUM RANGING FROM 0.1 PERCENT TO 2.5 PERCENT BY WEIGHT BASED ON THE WEIGHT OF THE FINAL CATALYST.
Claim 2
Independent Claim
164 words
A METHOD FOR CONVERTING TETRALIN INTO METHYL INDENE WHICH COMPRISES CONTACTING THE TETRALIN WITH A CATALYST CONSISTING ESSENTIALLY OF PLATINUM ASSOCIATED WITH A SILICAALUMINA CRACKING COMPONENT AT A TEMPERATURE BETWEEN 600*F. AND 1000*F., A PRESSURE BETWEEN 100 AND 750 POUNDS PER SQUARE INCH, A LIQUID HOURLY SPACE VELOCITY BETWEEN 0.5 AND 10 VOLUMES OF CHARGE PER VOLUME OF CATALYST PER HOUR AND A HYDROGEN TO HYDROCARBON MOLE RATIO OF BETWEEN 2:1 AND 40:1, THE SAID SILICA-ALUMINA CRACKING COMPONENT HAVING AN ALUMINA CONTENT OF FROM 7 PERCENT TO 30 PERCENT BY WEIGHT AND HAVING A CATALYTIC CRACKING ACTIVITY WITHIN A RANGE FROM 35 TO 95 AS COMPARED WITH A THEORETICAL MAXIMUM CATALYTIC CRACKING ACTIVITY OF 100 AND A PRACTICABLE MAXIMUM CATALYTIC CRACKING ACTIVITY OF BETWEEN 90 AND 95 ON A DISTILLATE-PLUS-LOSS SCALE FOR THE MEASUREMENT OF THE CATALYTIC CRACKING ACTIVITY OF A CRACKING CATALYST AND THE SAID PLATINUM RANGING FROM 0.1 PERCENT TO 2.5 PERCENT BY WEIGHT BASED ON THE WEIGHT OF THE FINAL CATALYST.
References Cited (Backward Citations)
US2416965A
Cited
US2428923A
Cited
US2723947A
Cited
US2780603A
Cited
US2754340A
Cited
US2854403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |