Patent US4455954A successfully refreshed from Google Patents.
Patent US3168587A successfully refreshed from Google Patents.
US3168587A
Expired / Lapsed
US
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Method of dehydrogenation
Assignee: Sinclair Research Inc
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Filing: 1962-04-27
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Granted: 1965-02-02
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Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
- 👤 Glenn O Michaels
- 👤 James W Gambell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:01
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/321; C07C5/324; C07C5/325; C07C5/327; C07C5/333; C07C5/3335; C07C5/3337
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN THE DEHYDROGENATION OF ALIPHATIC HYDROCARBONS OF 4 TO 8 CARBON ATOMS BY INTRODUCTION INTO A REACTOR CONTAINING A CATALYST CONSISTING ESSENTIALLY OF CATALYTIC AMOUNTS OF A PLATINUM GROUP METAL ON A NON-ACIDIC SOLID REFRACTORY SUPPORT, SAID REACTOR BEING MAINTAINED UNDER DEHYDROGENATION CONDITIONS INCLUDING A TEMPERATURE OF ABOUT 800 TO 1300*F., A METHOD OF MAINTAINING THE ACTIVITY OF SAID CATALYST WHICH COMPRISES PROVIDING IN HE REACTOR ABOUT 0.01 TO 10 MOLE PERCENT OF OXYGEN.
Claim 2
Dependent Claim
74 words
IN THE DEHYDROGENATION OF ALIPHATIC HYDROCARBONS OF 4 TO 8 CARBON ATOMS BY INTRODUCTION INTO A REACTOR CONTAINING A CATALYST CONSISTING ESSENTIALLY OF CATALYTIC AMOUNTS OF A PLATINUM GROUP METAL ON A NON-ACIDIC SOLID REFRACTORY SUPPORT, SAID REACTOR BEING MAINTAINED UNDER DEHYDROGENATION CONDITIONS INCLUDING A TEMPERATURE OF ABOUT 800 TO 1300*F., A METHOD OF MAINTAINING THE ACTIVITY OF SAID CATALYST WHICH COMPRISES PROVIDING IN HE REACTOR ABOUT 0.01 TO 10 MOLE PERCENT OF OXYGEN.
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) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |