Patent US3754870A successfully refreshed from Google Patents.
US3754870A
Expired / Lapsed
US
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Method and means of catalytically converting fluids
Assignee: Universal Oil Products Co
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Filing: 1971-08-26
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Granted: 1973-08-28
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Expires: 1991-08-26
Abstract
Abstract Method and means of catalytically converting fluids such as exhaust gases. The fluid is first passed through a skeletal material zone having a plurality of flow paths in the direction of flow. The skeletal material zone is preferably made catalytically active. Immediately after withdrawing the fluid from the skeletal material zone, the fluid is passed through subdivided catalyst material. These steps may be repeated more than once prior to final withdrawal.
Inventors
- 👤 R Carnahan
- 👤 K Youtsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:01
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N3/2853; B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; F01N13/00; F01N13/009; F01N13/0097; F01N3/2803; F01N3/2825; F01N3/2828; F01N3/2832; F01N3/2846; F01N2330/00; F01N2330/06; F01N2330/08; F01N2510/00; F01N2510/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
33 words
The converter of Claim 1 further characterized in that said outlet wall is comprised of a catalytically active skeletal structure having a plurality of flow paths extending therethrough in the direction of flow.
Claim 2
Dependent Claim
47 words
The converter of Claim 1 further characterized in that there is provided a plurality of catalyst retaining sections spaced by common perforate walls, each common perforate wall comprised of a catalytically active skeletal structure having a plurality of flow paths extending therethrough in the direction of flow.
Claim 3
Dependent Claim
39 words
The converter of Claim 1 further characterized in that there is provided an annular barrier means upstream of the inlet perforate wall of said catalyst retaining section for preventing fluid flow through the perimeter openings of said perforate wall.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |