US2785138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation and regeneration of supported noble metal catalysts
Assignee: Houdry Process Corp
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Filing: 1952-12-01
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Granted: 1957-03-12
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Expires: 1972-12-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas H Milliken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:44
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; B01J27/128; B01J27/13; Y; Y10; Y10S; Y10S252/00; Y10S252/18; Y10S502/00; Y10S502/50; Y10S502/514
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
THE PROCESS OF STABILIZING SUPPORTED NOBLE METAL, CATALYST OF THE PLATINUM FAMILY AGAINST RAPID DEACTIVATION IN USE, WHICH COMPRISES TREATING SUCH CATALYST IN A STREAM OF REDUCING GAS PRIOR TO SUCH USE, SAID REDUCING GAS BEING COMPOSED ESSENTIALLY OF HYDROGEN CONTAINING THEREIN UP TO 1% BY VOLUME OF CHLORIDE VAPOR EXPRESSED AS HYDROGEN CHLORIDE.
Claim 2
Dependent Claim
54 words
THE PROCESS OF STABILIZING SUPPORTED NOBLE METAL, CATALYST OF THE PLATINUM FAMILY AGAINST RAPID DEACTIVATION IN USE, WHICH COMPRISES TREATING SUCH CATALYST IN A STREAM OF REDUCING GAS PRIOR TO SUCH USE, SAID REDUCING GAS BEING COMPOSED ESSENTIALLY OF HYDROGEN CONTAINING THEREIN UP TO 1% BY VOLUME OF CHLORIDE VAPOR EXPRESSED AS HYDROGEN CHLORIDE.
References Cited (Backward Citations)
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Cited
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US2461959A
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US2479110A
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US2582428A
Cited
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Cited
US2642384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |