Patent US3280231A successfully refreshed from Google Patents.
Patent US3966645A successfully refreshed from Google Patents.
US3966645A
Expired / Lapsed
US
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Catalyst
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1975-02-14
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Granted: 1976-06-29
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Expires: 1995-02-14
Abstract
Abstract A catalyst suitable, for example, for the treatment of car exhaust emissions comprises an unagglomerated atomic dispersion, said coated particles being in association with support material compatible with the coated particles, such that the support material and the coated particles are adhered together.
Inventors
- 👤 James Anthony Cairns
- 👤 Stanley Frederick Pugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:34
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; B01J; B01J2/00; B01J2/006; B01J37/00; B01J37/02; B01J37/0215; B01J37/0225; B01J37/0226; B01J37/34; B01J37/341; B01J37/347; B01J23/00; B01J23/38; B01J23/40; B01J23/42; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
55 words
A catalyst comprising particles, the exposed area of which supports a substantially homogeneous, sputtered coating of catalytic material, a major proportion of the coating comprising an unagglomerated atomic dispersion, said coated particles being in association with support material compatible with the coated particles, such that the support material and the coated particles are adhered together.
Claim 2
Dependent Claim
55 words
A catalyst comprising particles, the exposed area of which supports a substantially homogeneous, sputtered coating of catalytic material, a major proportion of the coating comprising an unagglomerated atomic dispersion, said coated particles being in association with support material compatible with the coated particles, such that the support material and the coated particles are adhered together.
Claim 3
Dependent Claim
16 words
A catalyst according to claim 1, wherein the coated particles are carried by the support material.
Claim 4
Dependent Claim
22 words
A catalyst according to claim 2, wherein the mean size of the particles is in the range from 100 to 50 microns.
Claim 5
Dependent Claim
22 words
A catalyst according to claim 3, wherein the mean size of the particles is in the range from 1 to 25 microns.
Claim 6
Dependent Claim
14 words
A catalyst according to claim 2, wherein the particles are of a refractory oxide.
Claim 7
Dependent Claim
19 words
A catalyst according to claim 2, wherein the support material is in the form of one or more sheets.
Claim 8
Dependent Claim
16 words
A catalyst according to claim 2, wherein the support material is in the form of granules.
Claim 9
Dependent Claim
14 words
A catalyst according to claim 7, wherein the support material is a refractory oxide.
Claim 10
Dependent Claim
22 words
A catalyst according to claim 1 wherein the support material comprises an aluminum bearing ferritic alloy carrying an electrically insulating surface layer.
Claim 11
Dependent Claim
43 words
A catalyst according to claim 9 wherein the alloy is an alloy of iron, chromium, aluminum and yttrium with proportions by weight lying in the range up to 20% chromium, 0.5 to 12% aluminum and 0.1 to 3% yttrium and the balance iron.
Claim 12
Independent Claim
86 words
A method of preparing a catalyst comprising the steps of i. sputtering catalytic material onto the surfaces of particles which are compatible with the catalytic material to attach onto the particle surfaces a coating of the catalytic material a major proportion of said coating comprising an unagglomerated atomic dispersion; and ii. associating the particles, treated as in step (i), with support material for the catalytic material, wherein the support material is compatible with the treated particles, to adhere together the treated particles and the support material.
Claim 13
Independent Claim
86 words
A method of preparing a catalyst comprising the steps of i. sputtering catalytic material onto the surfaces of particles which are compatible with the catalytic material to attach onto the particle surfaces a coating of the catalytic material a major proportion of said coating comprising an unagglomerated atomic dispersion; and ii. associating the particles, treated as in step (i), with support material for the catalytic material, wherein the support material is compatible with the treated particles, to adhere together the treated particles and the support material.
Claim 14
Dependent Claim
39 words
A method according to claim 11, wherein step (ii) comprises providing a layer of the particles treated as in step (i) on the surface of the support material and adhering the particles to the surface of the support material.
Claim 15
Dependent Claim
31 words
A method according to claim 11, wherein the layer of particles is provided by contacting the support material with a dispersion of the particles in a liquid medium, followed by drying.
Claim 16
Dependent Claim
21 words
A method according to claim 11, wherein the adhering of the treated particles to the support material is effected by firing.
Claim 17
Dependent Claim
21 words
A method according to claim 11, wherein the adhering of the treated particles to the support material is effected by compacting.
Claim 18
Dependent Claim
37 words
A method according to claim 12, wherein the providing of the layer of the treated particles on the surface of the support material and the adhering of the treated particles to the support material is effected simultaneously.
Claim 19
Dependent Claim
22 words
A method according to claim 11 wherein the mean size of the particles is in the range from 1 to 25 microns.
Claim 20
Dependent Claim
14 words
A method according to claim 11 wherein the particles are of a refractory oxide.
Claim 21
Dependent Claim
16 words
A method according to claim 11 wherein the support material is in the form of granules.
Claim 22
Dependent Claim
14 words
A method according to claim 19 wherein the support material is a refractory oxide.
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) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |