Patent US3948810A successfully refreshed from Google Patents.
US3948810A
Expired / Lapsed
US
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Monolithic catalyst support member
Assignee: Universal Oil Products Co
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Filing: 1974-07-23
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Granted: 1976-04-06
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Expires: 1994-07-23
Abstract
Abstract A rigid monolithic catalyst support member is formed by having substantially round pellets of ceramic, or other refractory material, positioned in a staggered or random manner between spaced apart rigid sheetlike members such that there will be a turbulent fluid flow for a stream passing between the layers of such sheet-like members. Typically, the support materials will be of the same type of materials used for making the refractory "honeycomb" members, such as petalite, cordierite, alumina-silicates, alumina-silica-magnesia, zircon-mullite, alpha-alumina, etc.
Inventors
- 👤 George L. Hervert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:35
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2825; B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01J; B01J35/00; B01J35/50; B01J35/56; F01N3/2828; F01N3/2832; F01N3/2839; F01N3/2846; B01J35/30; F01N2330/00; F01N2330/30; F01N2330/38; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
A rigid and monolithic catalyst support member which comprises in combination, a plurality of spaced-apart, rigid ceramic sheet members and a multiplicity of substantially round pellets of rigid refractory material positioned in a layer in a spaced-apart manner between said sheet members in which said refractory material is fused to said spaced ceramic sheet members, with said round pellets being staggeredly positioned in said layer to thereby provide turbulent fluid flow for a stream passing between said sheet members.
Claim 2
Dependent Claim
79 words
A rigid and monolithic catalyst support member which comprises in combination, a plurality of spaced-apart, rigid ceramic sheet members and a multiplicity of substantially round pellets of rigid refractory material positioned in a layer in a spaced-apart manner between said sheet members in which said refractory material is fused to said spaced ceramic sheet members, with said round pellets being staggeredly positioned in said layer to thereby provide turbulent fluid flow for a stream passing between said sheet members.
Claim 3
Dependent Claim
18 words
The catalyst support member of claim 1 further characterized in that said spaced sheet members are generally flat.
Claim 4
Dependent Claim
23 words
The catalyst support member of claim 1 further characterized in that said spaced sheet members are of a plurality of concentric cylinder-like members.
Claim 5
Dependent Claim
26 words
The catalyst support member of claim 1 further characterized in that said spaced sheet members result from the spiral winding of at least one sheet-like member.
Claim 6
Dependent Claim
31 words
The catalyst support member of claim 1 further characterized in that said substantially round pellets are of a ceramic material similar to the composition of that of said ceramic sheet members.
Claim 7
Dependent Claim
22 words
The catalyst support member of claim 1 further characterized in that said substantially round pellets are of a refractory inorganic oxide material.
Claim 8
Dependent Claim
31 words
The catalyst support member of claim 1 further characterized in that said member is provided with an active oxidation catalyst coating suitable for the conversion of an engine exhaust gas stream.
References Cited (Backward Citations)
US3528783A
Cited
US3785781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |