US2742437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic structure and composition
Assignee: Oxy Catalyst Inc
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Filing: 1952-09-29
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Granted: 1956-04-17
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Expires: 1972-09-29
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Houdry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:06
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2825; F01N3/2828; B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J23/44; B01J23/46; B01J23/468; B01J23/48; B01J23/50; B01J35/00; B01J35/30; B01J35/34; B01J35/36; B01J35/38; B01J35/50; B01J35/56; B01J37/00; B01J37/02; B01J37/024; B01J37/0215; F01N2330/00; F01N2330/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A CATALYTIC STRUCTURE COMPRISING A PHYSICALLY STRONG, SHAPED SUPPORT COMPOSED OF A CATALYTICALLY INERT, SUBSTANTIALLY IMPERVIOUS MATERIAL, A CATALYTICALLY ACTIVE METAL OXIDE DEPOSITED ON THE EXTERNAL SURFACE ONLY OF SAID SUPPORT AS A THIN, TIGHTLY ADHERENT, SUPERFICIAL FILM HAVING A THICKNESS OF NOT LESS THAN .0005" AND NOT MORE THAN .015", SAID FILM OF METAL OXIDE BEING IMPREGNATED WITH A MINOR AMOUNT BY WEIGHT, BASED ON SAID METAL OXIDE, OF A FINELYDIVIDED CATALYICALLY ACTIVE METAL, SAID SUPPORT BEING OF SUCH SIZE AND SHAPE AS TO BE ADAPTED FOR MOUNTING IN A REACTION SPACE WITH SAID THIN, CATALYTICALLY ACTIVE FILM OUT OF CONTACT WITH NEIGHBORING SURFACES.
Claim 2
Dependent Claim
105 words
A CATALYTIC STRUCTURE COMPRISING A PHYSICALLY STRONG, SHAPED SUPPORT COMPOSED OF A CATALYTICALLY INERT, SUBSTANTIALLY IMPERVIOUS MATERIAL, A CATALYTICALLY ACTIVE METAL OXIDE DEPOSITED ON THE EXTERNAL SURFACE ONLY OF SAID SUPPORT AS A THIN, TIGHTLY ADHERENT, SUPERFICIAL FILM HAVING A THICKNESS OF NOT LESS THAN .0005" AND NOT MORE THAN .015", SAID FILM OF METAL OXIDE BEING IMPREGNATED WITH A MINOR AMOUNT BY WEIGHT, BASED ON SAID METAL OXIDE, OF A FINELYDIVIDED CATALYICALLY ACTIVE METAL, SAID SUPPORT BEING OF SUCH SIZE AND SHAPE AS TO BE ADAPTED FOR MOUNTING IN A REACTION SPACE WITH SAID THIN, CATALYTICALLY ACTIVE FILM OUT OF CONTACT WITH NEIGHBORING SURFACES.
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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) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |