US4288346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst for catalytic heat exchange
Assignee: Johnson Matthey Inc
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Filing: 1980-02-07
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Granted: 1981-09-08
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Expires: 2000-02-07
Abstract
Abstract A process for catalytic heat exchange which comprises providing a ceramic coated metal heat transfer membrane having two sides, one of which is catalytic, flowing a first gas over the catalytic side of the ceramic coated metal heat transfer membrane to generate heat, and flowing a second gas or vapor over the opposite side of the membrane whereby heat is transferred from the first gas to the second gas or vapor. Apparatus for carrying out the process is also disclosed.
Inventors
- 👤 James B. Hunter
- 👤 George McGuire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:03
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/02; B01J37/024; F; F24; F24V; F24V30/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
81 words
A catalyst consisting essentially of a heat conductive metal screen membrane having two sides, the membrane being coated on both sides with alumina cement so as to fill openings in the screen and make the screen gas impervious, the alumina cement coating on at least one side having a catalytically active material thereon comprising one or more platinum group metals and the alumina cement coating being derived from an aqueous dispersion of aluminum metal powder, chromium salt and aluminum phosphate binder.
Claim 2
Dependent Claim
81 words
A catalyst consisting essentially of a heat conductive metal screen membrane having two sides, the membrane being coated on both sides with alumina cement so as to fill openings in the screen and make the screen gas impervious, the alumina cement coating on at least one side having a catalytically active material thereon comprising one or more platinum group metals and the alumina cement coating being derived from an aqueous dispersion of aluminum metal powder, chromium salt and aluminum phosphate binder.
Claim 3
Dependent Claim
13 words
A catalyst according to claim 1 wherein the membrane is a woven screen.
Claim 4
Dependent Claim
79 words
A catalyst consisting essentially of a heat conductive metal screen membrane having two sides, the membrane being coated on both sides with alumina cement so as to fill openings in the screen and make the screen gas impervious, the alumina cement coating on at least one side having a catalytically active material thereon comprising one or more platinum group metals, said catalyst including a high surface area refractory coating on the alumina cement and carrying said catalytically active material.
Claim 5
Dependent Claim
79 words
A catalyst consisting essentially of a heat conductive metal screen membrane having two sides, the membrane being coated on both sides with alumina cement so as to fill openings in the screen and make the screen gas impervious, the alumina cement coating on at least one side having a catalytically active material thereon comprising one or more platinum group metals, said catalyst including a high surface area refractory coating on the alumina cement and carrying said catalytically active material.
Claim 6
Dependent Claim
19 words
A catalyst according to claim 3 wherein the cement comprises aluminum metal powder, chromium salt and aluminum phosphate binder.
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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) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |