US3788977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon cracking with both azeolite and pt-u-alumina in the matrix
Assignee: WR Grace and Co Conn
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Filing: 1972-06-01
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Granted: 1974-01-29
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Expires: 1992-06-01
Abstract
Abstract URANIUM OXIDE AND PLATINUM METAL IMPREGNATED UPON AN INORGANIC OXIDE SUPPORT IS ADDED TO CONVENTIONAL ZEOLITE PROMOTED CRACKING CATALYST TO INCREASE THE FORMATION OF AROMATICS IN CONVENTIONAL HYDROCARBON CRACKING REACTIONS.
Inventors
- 👤 G Dolbear
- 👤 J Magee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:24
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/10; B01J29/12; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05
Claims Analysis
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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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |