US2632739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst for producing aromatic hydrocarbons
Assignee: Standard Oil Development Co
•
Filing: 1950-05-16
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Granted: 1953-03-24
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Expires: 1970-05-16
Abstract
No abstract record available.
Inventors
- 👤 James A Dinwiddie
- 👤 Charles J G Leesemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:10
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A SUPPORTED CATALYST COMPOSTION CONSISTING OF A MOLYBDATE OF A METAL SELECTED FROM THE LEFT-HAND COLUMN OF GROUP II OF THE PERIODIC TABLE TO WHICH HAS BEEN ADDED A PROMOTIONAL QUANTITY IN THE RANGE BETWEEN ABOUT 0.1% AND 10% BY WEIGHT OF THE SUPPORTED CATALYST OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE OXIDE, HYDROXIDE AND INORGANIC SALTS OF POTASSIUM.
Claim 2
Dependent Claim
62 words
A SUPPORTED CATALYST COMPOSTION CONSISTING OF A MOLYBDATE OF A METAL SELECTED FROM THE LEFT-HAND COLUMN OF GROUP II OF THE PERIODIC TABLE TO WHICH HAS BEEN ADDED A PROMOTIONAL QUANTITY IN THE RANGE BETWEEN ABOUT 0.1% AND 10% BY WEIGHT OF THE SUPPORTED CATALYST OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE OXIDE, HYDROXIDE AND INORGANIC SALTS OF POTASSIUM.
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) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |