US3591649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion catalyst
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1968-10-10
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Granted: 1971-07-06
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Expires: 1988-10-10
Abstract
Abstract AN ACTIVATED CONVERSION CATALYST MAY BE PREPARED BY A UNIQUE PROCESSING SEQUENCE. IN THIS SEQUENCE A CONVENTIONAL SUPPORTED TRANSITION METAL CATALYST IS BROUGHT TO SUBSTANTIALLY IMPROVED LEVELS OF ACTIVITY BY IMPREGNATION WITH A REDUCED TRANSITION METAL CATLAYST, CAPABLE OF ACTIVATING MOLECULAR HYDROGEN.
Inventors
- 👤 Wolfram R Kroll
- 👤 George W Dembinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/16; B01J37/18; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |