Patent US2945900A successfully refreshed from Google Patents.
US2945900A
Expired / Lapsed
US
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Catalytic dehydrogenation of hydrocarbons
Assignee: Polysar Ltd
•
Filing: 1957-09-03
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Granted: 1960-07-19
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Expires: 1977-09-03
Abstract
No abstract record available.
Inventors
- 👤 Alexander Douglas Sadler
- 👤 Firko John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:25
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; C07C5/32; C07C5/327; C07C5/333; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN THE PROCESS OF DEHYDROGENATING A HYDROCARBON SELECTED FROM THE CLASS CONSISTING OF MONO-OLEFINS AND ALKLATED AROMATICS WHICH CONPRISES PASSING SAID HYDROCARBON TOGETHER WITH STEAM AT A DEHYDROGENATION TEMPERATURE OVER A DEHYDROGENATION CATALYST, THE ACTIVE INGREDIENT OF WHICH IS CALCIUM NICKEL PHOSPHATE, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID DEHYDROGENATION IN THE PRESENCE OF BETWEEN ABOUT 5 AND ABOUT 40 PERCENT UNCOMBINED OXYGEN, BASED ON THE VOLUME OF SAID HYDROCARBON.
Claim 2
Dependent Claim
70 words
IN THE PROCESS OF DEHYDROGENATING A HYDROCARBON SELECTED FROM THE CLASS CONSISTING OF MONO-OLEFINS AND ALKLATED AROMATICS WHICH CONPRISES PASSING SAID HYDROCARBON TOGETHER WITH STEAM AT A DEHYDROGENATION TEMPERATURE OVER A DEHYDROGENATION CATALYST, THE ACTIVE INGREDIENT OF WHICH IS CALCIUM NICKEL PHOSPHATE, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID DEHYDROGENATION IN THE PRESENCE OF BETWEEN ABOUT 5 AND ABOUT 40 PERCENT UNCOMBINED OXYGEN, BASED ON THE VOLUME OF SAID HYDROCARBON.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |