US3790504A
Expired / Lapsed
US
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Platinum-iridium-zinc catalyst for the conversion of hydrocarbons
Assignee: IFP Energies nouvelles
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Filing: 1972-02-24
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Granted: 1974-02-05
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Expires: 1992-02-24
Abstract
Abstract AN IMPROVED CATALYST FOR CARRYING OUT SUCH REACTIONS AS REFORMING, HYDROGENATION, DEHYDROGENATION, ISOMERIZATION, AROMATIZATION AND OTHER HYDROCARBON CONVERSIONS, WHICH COMPRISES PLATINUM AND IRIDIUM INCORPORATED IN A CARRIER SUCH AS ALUMINA, SILICA, MAGNESIA OR ALUMINA-SILICA AND A CRITICAL AMOUNT OF ZINC OR OF A ZINC COMPOUND.
Inventors
- 👤 P Duhaut
- 👤 J Guillemat
- 👤 J Miquel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:55
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; B01J23/60; C07; C07C; C07C5/00; C07C5/02; C07C5/22; C07C5/2206; C07C5/226; C07C5/27; C07C5/2729; C07C5/2732; C07C5/2754; C07C5/32; C07C5/321; C07C5/324; C07C5/325; C07C5/327; C07C5/333; C07C5/3335; C07C5/3337; C07C5/373; C07C5/393; C07C5/41; C07C5/415; C07C5/417; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2521/08; C07C2521/10; C07C2521/12; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/46; C07C2523/54; C07C2523/56; C07C2523/60; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |