US3786001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reforming catalyst and preparation
Assignee: Air Products and Chemicals Inc
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Filing: 1971-06-21
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Granted: 1974-01-15
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Expires: 1991-06-21
Abstract
Abstract HYDRATED ALUMINA GEL, HAVING A SMALL AMOUNT OF GROUP V-B METAL OXIDE UNIFORMLY DISTRIBUTED THEREIN, IS CALCINED, LEACHED WITH ACETIC ACID, RECALCINED, HUMIDIFIED, AND IMPREGNATED WITH A GROUP VIII NOBLE-METAL-CONTAINING COMPOSITION. REDUCTIVE TREATMENT OF SUCH MATERIAL TO PROVIDE SUPPORTED METALLIC GROUP VIII NOBLE METAL RESULTS IN HIGHLY ACTIVE, STABLE, HARD REFORMING CATALYST HAVING VERY LOW BULK DENSITY.
Inventors
- 👤 E Cornelius
- 👤 J Mcevoy
- 👤 La Mater G De
- 👤 D Koester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:40
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/648
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |