Patent US2950258A successfully refreshed from Google Patents.
US2950258A
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Dehydrogenation catalyst
Assignee: Phillips Petroleum Co
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Filing: 1958-07-17
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Granted: 1960-08-23
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Expires: 1978-07-17
Abstract
No abstract record available.
Inventors
- 👤 Emory W Pitzer
- 👤 Jr Lucien Bagnetto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:27
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/862; B01J23/74; B01J23/745; C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3332
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A CATALYST WHICH COMPRISES BETWEEN 30 PERCENT AND 45 PERCENT MAGNESIUM OXIDE, BETWEEN 10 PERCENT AND 35 PERCENT FERRIC OXIDE, BETWEEN 3 PERCENT AND 6 PERCENT OF A COMPONENT SELECTED FROM THE GROUP CONSISTING OF CUPRIC OXIDE AND CHROMIUM SESQUIOXIDE, AND AT LEAST 30 PERCENT POTASSIUM CARBONATE.
Claim 2
Dependent Claim
47 words
A CATALYST WHICH COMPRISES BETWEEN 30 PERCENT AND 45 PERCENT MAGNESIUM OXIDE, BETWEEN 10 PERCENT AND 35 PERCENT FERRIC OXIDE, BETWEEN 3 PERCENT AND 6 PERCENT OF A COMPONENT SELECTED FROM THE GROUP CONSISTING OF CUPRIC OXIDE AND CHROMIUM SESQUIOXIDE, AND AT LEAST 30 PERCENT POTASSIUM CARBONATE.
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) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |