US3630965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon conversion catalyst
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1969-03-11
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Granted: 1971-12-28
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Expires: 1989-03-11
Abstract
Abstract IMPROVED HYDROCARBON CATALYSTS ARE PREPARED BY TREATING CERTAIN ZEOLITES WITH HYDROGEN FLUORIDE. IT IS PREFERRED THAT THE HYDROGEN FLUORIDE TREATMENT BE ACCOMPLISHED AFTER THOSE PREPARATION STEPS REQUIRING CONTACT OF THE ZEOLITE WITH WATER AT HIGH TEMPERATURES. IT IS ALSO PREFERRED THAT THE ZEOLITE WHICH IS SUBJECTED TO THE HF TREATMENT HAVE A SUBSTANTIAL PORTION OF IS ALKALI METAL CONTENT REPLACED BY THE HYDROGEN ION.
Inventors
- 👤 Alexis Voorhies Jr
- 👤 Charles N Kimberlin Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:29
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/084; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186; B01J2229/00; B01J2229/10; B01J2229/16; B01J2229/30; B01J2229/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |