US2607663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst unit
Assignee: Rohm and Haas Co
•
Filing: 1947-07-25
•
Granted: 1952-08-19
•
Expires: 1967-07-25
Abstract
No abstract record available.
Inventors
- 👤 William A Perry
- 👤 David R Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:09
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J12/00; B01J12/007; B01J8/00; B01J8/008; B01J2208/00; B01J2208/00796; B01J2208/00884
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A CATALYST UNIT WHICH COMPRISES A PLURALITY OF LAYERS OF CATALYTICALLY-ACTIVE METAL GAUZE IN INTIMATE CONTACT ONE WITH ANOTHER OVER THEIR SURFACE AREAS, JOINED AT THEIR POINTS OF CONTACT BY WELDING TO FORM A PACK, AND A FRAME OF THIN METAL SHEET SECURELY FASTENED ALONG ITS INNER EDGE ABOUT THE PERIPHERY OF SAID PACK, SAID FRAME HAVING INTERMEDIATE ITS EDGES DOWNWARDLY AND UPWARDLY EXTENDING ELEMENTS WHICH FORM A GROOVE THEREIN, THE OUTER PORTION OF SAID FRAME BEING ADAPTED TO SERVE AS MEANS FOR MOUNTING THE CATALYST UNIT IN A REACTION CHAMBER, SUPPORTING THE BACK OF THE LAYERS OF GAUZE WHICH ARE WELDED TOGETHER, AND FORMING A FIXED, NONMOVABLE, GAS-TIGHT SEAL BETWEEN THE ENTIRE OUTER PERIPHERY OF THE SAID PACK AND THE ENTIRE INNER PERIPHERY OF THE REACTION CHAMBER.
Claim 2
Dependent Claim
128 words
A CATALYST UNIT WHICH COMPRISES A PLURALITY OF LAYERS OF CATALYTICALLY-ACTIVE METAL GAUZE IN INTIMATE CONTACT ONE WITH ANOTHER OVER THEIR SURFACE AREAS, JOINED AT THEIR POINTS OF CONTACT BY WELDING TO FORM A PACK, AND A FRAME OF THIN METAL SHEET SECURELY FASTENED ALONG ITS INNER EDGE ABOUT THE PERIPHERY OF SAID PACK, SAID FRAME HAVING INTERMEDIATE ITS EDGES DOWNWARDLY AND UPWARDLY EXTENDING ELEMENTS WHICH FORM A GROOVE THEREIN, THE OUTER PORTION OF SAID FRAME BEING ADAPTED TO SERVE AS MEANS FOR MOUNTING THE CATALYST UNIT IN A REACTION CHAMBER, SUPPORTING THE BACK OF THE LAYERS OF GAUZE WHICH ARE WELDED TOGETHER, AND FORMING A FIXED, NONMOVABLE, GAS-TIGHT SEAL BETWEEN THE ENTIRE OUTER PERIPHERY OF THE SAID PACK AND THE ENTIRE INNER PERIPHERY OF THE REACTION CHAMBER.
References Cited (Backward Citations)
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US1722339A
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US1927508A
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US2049246A
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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) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |