Patent US3794599A successfully refreshed from Google Patents.
US3794599A
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Method of preparing a catalyst of a group viii noble metal and tin
Assignee: Shell USA Inc
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Filing: 1972-05-15
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Granted: 1974-02-26
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Expires: 1992-05-15
Abstract
Abstract CATALYSTS CONTAINING GROUP VIII NOBLE METALS AND TIN ON A CARRIER ARE PREPARED BY DEPOSITING TIN ON THE CARRIER WITH AN AQUEOUS INORGANIC SALT SOLUTION HAVING TIN PRESENT IN THE ANION.
Inventors
- 👤 F Dautzenberg
- 👤 H Kouwenhoven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:46
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; B01J23/62; B01J23/622; B01J23/626; B01J23/90; B01J23/96; C07; C07C; C07C5/00; C07C5/32; C07C5/373; C07C5/393; C07C5/41; C07C5/415; C07C5/417; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |