Patent US3270798A successfully refreshed from Google Patents.
US3270798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic radiant heat treating apparatus
Assignee: Universal Oil Products Co
•
Filing: 1964-11-19
•
Granted: 1966-09-06
•
Expires: 1984-11-19
Abstract
No abstract record available.
Inventors
- 👤 Detroit National Bank Of
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:06
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/12; F23D14/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN A CATALYTIC RADIANT HEATING APPARATUS ADAPTED TO PROVIDE HIGH TEMPERATURE RADIANT HEATING IN THE INFRARED RANGE ABOVE 850*F., THE COMBINATION OF A THIN METTALIC ELEMENT OF AT LEAST ONE GAS PREMEABLE METAL ALLOY GUAZE HAVING A NOBLE METAL CATALYTIC COATING OF SUBSTANTIALLY UNIFORM THICKNESS THEREOVER, AT LEAST ONE PERVIOUS GAS DISTRIBUTING AND HEAT REFLECTIVE UNCOATED METAL ALLOY GAUZE OF SUBSTANTIALLY EQUAL MESH SIZE AS THE COATED GAUZE IN DIRECT CONTACT WITH THE BACK OF AN COEXTENSIVE WITH SAID CATALYTIC ELEMENT WITHOUT INTERVENING MEDIA THEREBETWEEN, AND CONFINED MANIFOLD MEANS HAVING AIR AND FUEL SUPPLY INLET MEANS THERETO ENCOMPASSING THE BACKSIDE OF SAID GAS DISTRIBUTING GAUZE.
Claim 2
Dependent Claim
105 words
IN A CATALYTIC RADIANT HEATING APPARATUS ADAPTED TO PROVIDE HIGH TEMPERATURE RADIANT HEATING IN THE INFRARED RANGE ABOVE 850*F., THE COMBINATION OF A THIN METTALIC ELEMENT OF AT LEAST ONE GAS PREMEABLE METAL ALLOY GUAZE HAVING A NOBLE METAL CATALYTIC COATING OF SUBSTANTIALLY UNIFORM THICKNESS THEREOVER, AT LEAST ONE PERVIOUS GAS DISTRIBUTING AND HEAT REFLECTIVE UNCOATED METAL ALLOY GAUZE OF SUBSTANTIALLY EQUAL MESH SIZE AS THE COATED GAUZE IN DIRECT CONTACT WITH THE BACK OF AN COEXTENSIVE WITH SAID CATALYTIC ELEMENT WITHOUT INTERVENING MEDIA THEREBETWEEN, AND CONFINED MANIFOLD MEANS HAVING AIR AND FUEL SUPPLY INLET MEANS THERETO ENCOMPASSING THE BACKSIDE OF SAID GAS DISTRIBUTING GAUZE.
References Cited (Backward Citations)
US1326767A
Cited
BE565879A
Cited
US1753897A
Cited
FR856484A
Cited
US2263432A
Cited
FR867148A
Cited
US2607663A
Cited
US2742437A
Cited
US2582642A
Cited
US3024836A
Cited
US3057400A
Cited
US3107720A
Cited
US3029866A
Cited
FR1136829A
Cited
US3027935A
Cited
DK83878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |