Patent US3766292A successfully refreshed from Google Patents.
US3766292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for obtaining isopentane from butane hexane or mixtures thereof
Assignee: Chevron USA Inc
•
Filing: 1970-11-23
•
Granted: 1973-10-16
•
Expires: 1990-11-23
Abstract
Abstract A PROCESS FOR OBTAINING RELATIVELY HIGH YIELDS OF ISOPENTANE FROM AN ALKANE FEEDSTOCK WHICH COMPRISES CONTACTING THE FEEDSTOCK AT AN ELEVATED TEMPERATURE IN A REACTION ZONE WITH A CATALYTIC MASS HAVING (1) AN ALKANE DEHYDROGENATION COMPONENT; (2) AN OLEFIN DISPROPORTIONATION COMPONENT; AND (3) AN ALKANE ISOMERIZATION COMPONENT. THE THREE COMPONENTS ARE SEPARATE AND DISTINCT CATALYST COMPONENTS. PREFERABLY, THE ALKANE ISOMERIZATION COMPONENT CONTAINS A LAYERED CRYSTALLINE ALUMINOSILICATE.
Inventors
- 👤 R Wall
- 👤 J Kemp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:24
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/08; C07C6/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |