US2664340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic apparatus and method for treating exhaust gases
Assignee: Individual
•
Filing: 1949-08-09
•
Granted: 1953-12-29
•
Expires: 1969-08-09
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Houdry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:15
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/30; F01N3/34; B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J23/48; B01J23/50; B01J23/70; B01J23/72; B01J8/00; B01J8/02; B01J8/04; F01N13/00; F01N13/009; F01N3/28; F01N3/2803; F01N3/2825; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00026; B01J2208/00035; B01J2208/00044; B01J2208/00061; B01J23/90; F01N2330/00; F01N2330/08; F01N2470/00; F01N2470/30; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
THE COMBINATION WITH THE EXHAUST OF AN INTERNAL COMBUSTION ENGINE, OF A CATALYST CHAMBER COMMUNICATING THEREWITH AND WITH THE ATMOSPHERE, AND A MULTIPLICITY OF GROUPS OF CATALYTIC ELEMENTS FIXEDLY CONTAINED IN SAID CHAMBER, THE GROUPS BEING ARRANGED IN SERIES, THE ELEMENTS OF EACH GROUP COMPRISING A BASE OF ACTIVE ALUMINA AND DISPERSED THEREON A FINELY DIVIDED METAL CATALYST, THE GROUP NEAREST THE EXHAUST COMPRISING A NUMBER OF SEPARATE SPACED-APART ELEMENTS IN WHICH THE FINELY DIVIDED METAL CATALYST IS PLATINUM, A SUCCEDING GROUP COMPRISING A NUMBER OF SAPCED-APART ELEMENTS IN WHICH THE FINELY DIVIDED METAL CATALYST IS SILVER, AND A GROUP SUCCEEDING THE LAST NAMED GROUP COMPRISING A NUMBER OF SPACED-APART ELEMENTS IN WHICH THE FINELY DIVIDED METAL CTALYST IS COPPER.
Claim 2
Dependent Claim
120 words
THE COMBINATION WITH THE EXHAUST OF AN INTERNAL COMBUSTION ENGINE, OF A CATALYST CHAMBER COMMUNICATING THEREWITH AND WITH THE ATMOSPHERE, AND A MULTIPLICITY OF GROUPS OF CATALYTIC ELEMENTS FIXEDLY CONTAINED IN SAID CHAMBER, THE GROUPS BEING ARRANGED IN SERIES, THE ELEMENTS OF EACH GROUP COMPRISING A BASE OF ACTIVE ALUMINA AND DISPERSED THEREON A FINELY DIVIDED METAL CATALYST, THE GROUP NEAREST THE EXHAUST COMPRISING A NUMBER OF SEPARATE SPACED-APART ELEMENTS IN WHICH THE FINELY DIVIDED METAL CATALYST IS PLATINUM, A SUCCEDING GROUP COMPRISING A NUMBER OF SAPCED-APART ELEMENTS IN WHICH THE FINELY DIVIDED METAL CATALYST IS SILVER, AND A GROUP SUCCEEDING THE LAST NAMED GROUP COMPRISING A NUMBER OF SPACED-APART ELEMENTS IN WHICH THE FINELY DIVIDED METAL CTALYST IS COPPER.
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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) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |