US3780129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation process
Assignee: Texas Petrochemicals Corp
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Filing: 1972-04-10
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Granted: 1973-12-18
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Expires: 1992-04-10
Abstract
Abstract AN IMPROVED DEHYDROGENATION PROCESS FOR THE PRODUCTION OF DIOLEFINS BY THE HYDROCARBON OF ALIPHATIC HYDROCARBONS BY CONTACTING THE HYDROCARBON COMPOUND WITH A CATALYST CONTAINING CHROMIC OXIDE, ALUMINA, NICKEL AND LITHIUM.
Inventors
- 👤 H Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:20
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3332; C07C5/321; C07C5/322
Claims Analysis
Total Claims: 0
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |