US3208131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rigid catalytic metallic unit and method for the production thereof
Assignee: Universal Oil Products Co
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Filing: 1961-03-22
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Granted: 1965-09-28
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Expires: 1981-03-22
Abstract
No abstract record available.
Inventors
- 👤 Norbert C Ruff
- 👤 Richard J Ruff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:45
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J15/00; B01J15/005; B01J19/00; B01J19/32; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32203; B01J2219/32206; B01J2219/3221; B01J2219/32213; B01J2219/32224; B01J2219/32227; B01J2219/324; B01J2219/32408; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49345; Y10T29/496; Y10T29/49604; Y10T29/49826; Y10T29/49888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A METHOD OF PREPARING A CATALYTIC METALLIC ELEMENT, WHICH COMPRISES THE STEPS OF, CRIMPING A STRIP OF HIGH TEMPERATURE RESISTANT ALLOY RIBBON, SPIRALLY WINDING THE STRIP OF CRIMPED RIBBON WITH A FLAT STRIP OF A SIMILAR TYPE AND SIZE OF RIBBON AND THEREBY PROVIDING ALTERNATE LAYERS OF A CRIMPED STRIP AND A FLAT STRIP WITHIN THE MULTIPLE CONVOLUTIONS OF A RESULTING SPIRALLY WOUND ELEMENT, HOLDING SAID ELEMENT WITH HOLDING MEANS MAINTAINING THE ALTERNATE STRIPS IN A WOUND POSITION AND IN CONTACT WITH ONE ANOTHER, COATING SAID WOUND ELEMENT WITH A BRAZING ALLOY AND THEN HEATING AND BRAZING SAID COATED ELEMENT
Claim 2
Independent Claim
100 words
A METHOD OF PREPARING A CATALYTIC METALLIC ELEMENT, WHICH COMPRISES THE STEPS OF, CRIMPING A STRIP OF HIGH TEMPERATURE RESISTANT ALLOY RIBBON, SPIRALLY WINDING THE STRIP OF CRIMPED RIBBON WITH A FLAT STRIP OF A SIMILAR TYPE AND SIZE OF RIBBON AND THEREBY PROVIDING ALTERNATE LAYERS OF A CRIMPED STRIP AND A FLAT STRIP WITHIN THE MULTIPLE CONVOLUTIONS OF A RESULTING SPIRALLY WOUND ELEMENT, HOLDING SAID ELEMENT WITH HOLDING MEANS MAINTAINING THE ALTERNATE STRIPS IN A WOUND POSITION AND IN CONTACT WITH ONE ANOTHER, COATING SAID WOUND ELEMENT WITH A BRAZING ALLOY AND THEN HEATING AND BRAZING SAID COATED ELEMENT
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US1400204A
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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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |