US4842954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal catalyst carrier body, blank for producing the body
Assignee: Vitesco Technologies Lohmar Verwaltungs GmbH
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Filing: 1987-11-20
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Granted: 1989-06-27
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Expires: 2007-11-20
Abstract
Abstract A blank for the production of a catalyst carrier body includes spirally-wound alternating layers of smooth and corrugated metal sheets. At least one of said corrugated sheets forms an innermost layer defining a coil-free central zone surrounded by said innermost layer. A jacket is added around the blank to form a catalyst carrier body. The sheets are wound on a toothed roller.
Inventors
- 👤 Theodor Cyron
- 👤 Manfred Vierkotter
- 👤 Rolf Hetzelberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:54
CPC Classifications
B; B01; B01J; B01J35/00; B01J35/50; B01J35/56; F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2807; F01N3/281; B01J37/00; F01N2330/00; F01N2330/02; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12333; Y10T428/1234
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
40 words
Blank for the production of a catalyst carrier body, comprising spirally-wound alternating layers of smooth and corrugated metal sheets, at least one of said corrugated sheets forming an innermost layer defining a coil-free central zone surrounded by said innermost layer.
Claim 2
Dependent Claim
40 words
Blank for the production of a catalyst carrier body, comprising spirally-wound alternating layers of smooth and corrugated metal sheets, at least one of said corrugated sheets forming an innermost layer defining a coil-free central zone surrounded by said innermost layer.
Claim 3
Dependent Claim
18 words
Blank according to claim 1, wherein said innermost layer is formed of a plurality of said corrugated sheets.
Claim 4
Dependent Claim
43 words
Catalyst carrier body, comprising spirally-wound alternating layers of smooth and corrugated metal sheets, at least one of said corrugated sheets forming an innermost layer defining a coil-free central zone surrounded by said innermost layer, and a jacket surrounding said smooth and corrugated sheets.
Claim 5
Dependent Claim
43 words
Catalyst carrier body, comprising spirally-wound alternating layers of smooth and corrugated metal sheets, at least one of said corrugated sheets forming an innermost layer defining a coil-free central zone surrounded by said innermost layer, and a jacket surrounding said smooth and corrugated sheets.
Claim 6
Dependent Claim
20 words
Catalyst carrier body according to claim 3, wherein said innermost layer is formed of a plurality of said corrugated sheets.
Claim 7
Dependent Claim
60 words
Catalyst carrier body according to claim 3, wherein said smooth and corrugated sheets have two end surfaces, and including first brazed connections at one of said end surfaces joining said layers to one another and to said jacket, and second brazed connections at the other of said end surfaces brazing substantially the innermost two to ten sheets to one another.
Claim 8
Dependent Claim
60 words
Catalyst carrier body according to claim 4, wherein said smooth and corrugated sheets have two end surfaces, and including first brazed connections at one of said end surfaces joining said layers to one another and to said jacket, and second brazed connections at the other of said end surfaces brazing substantially the innermost two to ten sheets to one another.
Claim 9
Dependent Claim
38 words
Catalyst carrier body according to claim 4, wherein said first brazed connections are disposed at the circumference of the catalyst carrier body, and said second brazed connections are disposed substantially at the center of the catalyst carrier body.
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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) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |