Patent US3845156A successfully refreshed from Google Patents.
US3845156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for dehydrogenation of organic compounds
Assignee: Phillips Petroleum Co
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Filing: 1972-04-05
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Granted: 1974-10-29
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Expires: 1992-04-05
Abstract
Abstract 1. IN A PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF A DEHYDROGENATION HYDROCARBON FEEDSTOCK HAVING 3 TO 10 CARBON ATOMS PER MOLECULE IN THE PRESENCE OF AN OXIDATIVE DEHYDROGENATION CATALYST CONSISTING ESSENTIALLY OF LI, SN, P AND O, THE IMPROVEMENT WHICH COMPRISES EFFECTING SAID DEHYDROGENATION IN THE PRESENCE OF ABOUT 1 TO ABOUT 20,000 P.PM., BASED ON WEIGHT OF FEEDSTOCK, OF CARBON DISULFITE.
Inventors
- 👤 F Farha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:44
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN A PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF A DEHYDROGENATION HYDROCARBON FEEDSTOCK HAVING 3 TO 10 CARBON ATOMS PER MOLECULE IN THE PRESENCE OF AN OXIDATIVE DEHYDROGENATION CATALYST CONSISTING ESSENTIALLY OF LI, SN, P AND O, THE IMPROVEMENT WHICH COMPRISES EFFECTING SAID DEHYDROGENATION IN THE PRESENCE OF ABOUT 1 TO ABOUT 20,000 P.PM., BASED ON WEIGHT OF FEEDSTOCK, OF CARBON DISULFITE.
Claim 2
Dependent Claim
61 words
IN A PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF A DEHYDROGENATION HYDROCARBON FEEDSTOCK HAVING 3 TO 10 CARBON ATOMS PER MOLECULE IN THE PRESENCE OF AN OXIDATIVE DEHYDROGENATION CATALYST CONSISTING ESSENTIALLY OF LI, SN, P AND O, THE IMPROVEMENT WHICH COMPRISES EFFECTING SAID DEHYDROGENATION IN THE PRESENCE OF ABOUT 1 TO ABOUT 20,000 P.PM., BASED ON WEIGHT OF FEEDSTOCK, OF CARBON DISULFITE.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |