US2765355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of methylcyclopentene
Assignee: Shell Development Co
•
Filing: 1953-10-06
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Granted: 1956-10-02
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Expires: 1973-10-06
Abstract
No abstract record available.
Inventors
- 👤 Nozaki Kenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:21
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3335; C07C5/3337
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
PROCESS FOR THE PRODUCTION OF METHYLCYCLOPENTENE WHICH COMPRISES DEHYDROGENATING METHYLCYCLOPENTANE AT A TEMPERATURE BETWEEN 400* C. AND 600* C. WITH A CATALYST CONSISTING ESSENTIALLY OF 0.05% TO 0.5% PLATINUM INCORPORATED ON THE SURFACE OF A SILICA GEL WHICH IS FREE OF ALUMINA IMPURITY.
Claim 2
Dependent Claim
43 words
PROCESS FOR THE PRODUCTION OF METHYLCYCLOPENTENE WHICH COMPRISES DEHYDROGENATING METHYLCYCLOPENTANE AT A TEMPERATURE BETWEEN 400* C. AND 600* C. WITH A CATALYST CONSISTING ESSENTIALLY OF 0.05% TO 0.5% PLATINUM INCORPORATED ON THE SURFACE OF A SILICA GEL WHICH IS FREE OF ALUMINA IMPURITY.
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) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |