US3285985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dehydrocyclization of hydrocarbons
Assignee: Gulf Research and Development Co
•
Filing: 1963-05-01
•
Granted: 1966-11-15
•
Expires: 1983-05-01
Abstract
No abstract record available.
Inventors
- 👤 Robert E Kline
- 👤 William C Starnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:31
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; C; C07; C07C; C07C5/00; C07C5/32; C07C5/373; C07C5/393; C07C5/41; C07C5/415
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS COMPRISING CONTACTING IN THE PRESENCE OF HYDROGEN A HYDROCARBON HAVING AN ACYCLIC, UNBRANCHED CHAIN OF AT LEAST 6 CARBON ATOMS UNDER DEHYDROCYCLIZATION CONDITIONS WITH A CATALYST CONSISTING IN MAJOR PROPORTION OF ETA ALUMINA AND IN MINOR PROPORTION OF CHROMINA AND AT LEAST ONE METAL FROM THE GROUP CONSISTING OF SODIUM AND POTASSIUM.
Claim 2
Dependent Claim
54 words
A PROCESS COMPRISING CONTACTING IN THE PRESENCE OF HYDROGEN A HYDROCARBON HAVING AN ACYCLIC, UNBRANCHED CHAIN OF AT LEAST 6 CARBON ATOMS UNDER DEHYDROCYCLIZATION CONDITIONS WITH A CATALYST CONSISTING IN MAJOR PROPORTION OF ETA ALUMINA AND IN MINOR PROPORTION OF CHROMINA AND AT LEAST ONE METAL FROM THE GROUP CONSISTING OF SODIUM AND POTASSIUM.
References Cited (Backward Citations)
US2863826A
Cited
US2941016A
Cited
US2962536A
Cited
US3114697A
Cited
US3013089A
Cited
US3202725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |