US2731541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic structure and apparatus
Assignee: Oxy Catalyst Inc
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Filing: 1954-07-09
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Granted: 1956-01-17
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Expires: 1974-07-09
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Houdry
- 👤 Wilfred M Adey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:48
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A CATALYTIC STRUCTURE COMPRISING AN ELECTRIC RESISTANCE ELEMENT PROVIDED WITH A THIN, ADHERENT, SUPERFICIAL FILM OF CATALYTIC MATERIAL, SAID FILM HAVING A THICKNESS OF FROM .0001" TO .006" AND BEING COMPRISED OF A DIFFICULTY REDUCIBLE INORGANIC OXIDE IN A CATALYTICALLY ACTIVE FORM RESULTING FROM THE DEHYDRATION OF A HYDRATED FORM OF THE OXIDE CONTROLLED CONDITIONS TO PRODUCE A DEHYDRATED STRUCTURE OF LARGE INTERNAL PORE VOLUME AND SURFACE AREA, SAID OXIDE BEING OF A TYPE WHICH IS DIFFICULTY REDUCIBLE AND WHICH MAY BE PREPARED IN THE FORM OF A GELATINOUS HYDRATED OXIDE THAT MAY BE DEHYDRATED UNDER CONTROLLED CONDITIONS TO FORM DEHYDRATED STRUCTURES OF LARGE INTERNAL PORE VOLUME AND SURFACE AREA, SAID FILM OF OXIDE BEING IMPREGNATED WITH FINELY DIVIDED CATALYTICALLY ACTIVE METAL.
Claim 2
Dependent Claim
122 words
A CATALYTIC STRUCTURE COMPRISING AN ELECTRIC RESISTANCE ELEMENT PROVIDED WITH A THIN, ADHERENT, SUPERFICIAL FILM OF CATALYTIC MATERIAL, SAID FILM HAVING A THICKNESS OF FROM .0001" TO .006" AND BEING COMPRISED OF A DIFFICULTY REDUCIBLE INORGANIC OXIDE IN A CATALYTICALLY ACTIVE FORM RESULTING FROM THE DEHYDRATION OF A HYDRATED FORM OF THE OXIDE CONTROLLED CONDITIONS TO PRODUCE A DEHYDRATED STRUCTURE OF LARGE INTERNAL PORE VOLUME AND SURFACE AREA, SAID OXIDE BEING OF A TYPE WHICH IS DIFFICULTY REDUCIBLE AND WHICH MAY BE PREPARED IN THE FORM OF A GELATINOUS HYDRATED OXIDE THAT MAY BE DEHYDRATED UNDER CONTROLLED CONDITIONS TO FORM DEHYDRATED STRUCTURES OF LARGE INTERNAL PORE VOLUME AND SURFACE AREA, SAID FILM OF OXIDE BEING IMPREGNATED WITH FINELY DIVIDED CATALYTICALLY ACTIVE METAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |