US3240838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization catalyst for conversion of type iii olefins to type iv olefins
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1964-12-01
•
Granted: 1966-03-15
•
Expires: 1984-12-01
Abstract
No abstract record available.
Inventors
- 👤 Herschel T White
- 👤 Jr Arthur W Langer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:44
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2562
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
THE PROCESS WHICH COMPRISES ISOMERIZING C4-C40 ALPHA OLEFINS HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
12 words
THE PROCESS WHICH COMPRISES ISOMERIZING C4-C40 ALPHA OLEFINS HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
FR1189570A
Cited
US2967206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |