US3192168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Palladium-tin catalysts
Assignee: Rhone Poulenc SA
•
Filing: 1960-01-29
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Granted: 1965-06-29
•
Expires: 1980-01-29
Abstract
No abstract record available.
Inventors
- 👤 Grenet Jean Baptiste
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:34
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/62; B01J23/622; B01J23/626
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
27 words
A SELECTIVE HYDROGENATION CATLYSTA ESSENTIALLY OF A SUPPORT MATERIAL IMPREGNATED WITH PALLADIUM AND A STANNOUS SALT SELECTED FROM THE GROUP CONSISTING OF STANNOUS ACETATE AND STANNOUS CHLORIDE.
Claim 2
Dependent Claim
27 words
A SELECTIVE HYDROGENATION CATLYSTA ESSENTIALLY OF A SUPPORT MATERIAL IMPREGNATED WITH PALLADIUM AND A STANNOUS SALT SELECTED FROM THE GROUP CONSISTING OF STANNOUS ACETATE AND STANNOUS CHLORIDE.
Claim 3
Dependent Claim
36 words
A PROCESS FOR THE PREPARATION OF A SELECTIVE HYDROGENATION CATLYST WHICH COMPRISES REDUCING A PALLADIUM SALT TO PALLADIUM ON A SUPPORT MATERIAL AND IMPREGNATING THE SUPPORTED PALLADIUM WITH AN AQUEOUS SOLUTION OF AN INORGANIC STANNOUS SALT.
Claim 4
Dependent Claim
36 words
A PROCESS FOR THE PREPARATION OF A SELECTIVE HYDROGENATION CATLYST WHICH COMPRISES REDUCING A PALLADIUM SALT TO PALLADIUM ON A SUPPORT MATERIAL AND IMPREGNATING THE SUPPORTED PALLADIUM WITH AN AQUEOUS SOLUTION OF AN INORGANIC STANNOUS SALT.
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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) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |