Patent DE13342C successfully refreshed from Google Patents.
Patent US4415537A successfully refreshed from Google Patents.
US4415537A
Expired / Lapsed
US
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Catalytic combustor
Assignee: RTX Corp
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Filing: 1982-02-01
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Granted: 1983-11-15
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Expires: 2002-02-01
Abstract
Abstract A catalytic combustor particularly adapted for use in wood and coal burning stoves is described comprising a high temperature stable support material containing a high activity, sulfur tolerant combustion catalyst. In addition to having a relatively long life, the catalytic combustors according to the present invention demonstrate useful performance even in the presence of sulfur containing fuels. Furthermore, the catalytic combustors of the present invention improve the efficiency of such stoves over and above that provided by conventional catalytic combustors.
Inventors
- 👤 Raymond W. Vine
- 👤 John C. Trocciola
- 👤 Herbert J. Setzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:58
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/63
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
A solid fuel burning stove comprising an air inlet section, a combustion section, a combusted and uncombusted gas exhaust section, and a catalytic combustor in the exhaust section, wherein the improvement comprises utilizing a sulfur tolerant catalytic combustor for wood or coal comprising a high temperature stable lanthanum stabilized alumina or magnesium promoted lanthanum stabilized alumina substrate impregnated with a sulfur tolerant, high activity rhodium combustion catalyst, said sulfur tolerant catalyst permitting interchangeable use of wood or coal as the solid fuel in the stove.
Claim 2
Dependent Claim
85 words
A solid fuel burning stove comprising an air inlet section, a combustion section, a combusted and uncombusted gas exhaust section, and a catalytic combustor in the exhaust section, wherein the improvement comprises utilizing a sulfur tolerant catalytic combustor for wood or coal comprising a high temperature stable lanthanum stabilized alumina or magnesium promoted lanthanum stabilized alumina substrate impregnated with a sulfur tolerant, high activity rhodium combustion catalyst, said sulfur tolerant catalyst permitting interchangeable use of wood or coal as the solid fuel in the stove.
Claim 3
Dependent Claim
19 words
The solid fuel burning stove of claim 1 wherein the substrate is in the form of a cylindrical honeycomb.
Claim 4
Dependent Claim
17 words
The solid fuel burning stove of claim 1 wherein the substrate is in the form of pellets.
Claim 5
Dependent Claim
21 words
The solid fuel burning stove of claim 1 wherein the amount of catalyst is about 0.01% to about 6% by weight.
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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) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |