US3244859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared food heater
Assignee: Poly-Pak Corp of America
•
Filing: 1963-01-07
•
Granted: 1966-04-05
•
Expires: 1983-01-07
Abstract
No abstract record available.
Inventors
- 👤 Carlton L Whiteford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:58
CPC Classifications
F; F24; F24C; F24C7/00; F24C7/08; F24C7/087; F24C7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
AN INFRARED FOOD HEATER FOR A DISH OF SYNTHETIC PLASTIC MATERIAL CONTAINING FOOD COMPRISING A PLATFORM SUBSTANTIALLY TRANSPARENT TO INFRARED RADIATION FOR SUPPORTING A DISH OF SYNTHETIC PLASTIC MATERIAL CONTAINING FOOD; MEANS BELOW SAID PLATFORM FOR PROJECTING A BEAM OF INFRARED RADIATION THROUGH SAID PLATFORM AND CONFINING SAID BEAM SUBSTANTIALLY TO AN AREA OF SAID PLATFORM CORRESPONDING TO THE BOTTOM OF THE DISH SUPPORTED THEREON; MEANS ABOVE SAID PLATFORM FOR PROJECTING A BEAM OF INFRARED RADIATION TOWARDS SAID PLATFORM AND CONFINING SAID BEAM SUBSTANTIALLY TO AN AREA OF SAID PLATFORM CORRESPONDING TO THE AREA OF THE SURFACE OF THE FOOD RECEIVED WITHIN THE DISH SUPPORTED THEREON; AND MEANS FOR COOLING SAID PLATFORM TO MAINTAIN THE UPPER SURFACE THEREOF BELOW A PREDETERMINED TEMPERATURE CORRESPONDING TO THE TEMPERATURE AT WHICH THE SYNTHETIC PLASTIC MATERIAL OF THE DISH SUPPORTED ON THE PLATFORM WILL BE AFFECTED ADVERSELY.
Claim 2
Dependent Claim
143 words
AN INFRARED FOOD HEATER FOR A DISH OF SYNTHETIC PLASTIC MATERIAL CONTAINING FOOD COMPRISING A PLATFORM SUBSTANTIALLY TRANSPARENT TO INFRARED RADIATION FOR SUPPORTING A DISH OF SYNTHETIC PLASTIC MATERIAL CONTAINING FOOD; MEANS BELOW SAID PLATFORM FOR PROJECTING A BEAM OF INFRARED RADIATION THROUGH SAID PLATFORM AND CONFINING SAID BEAM SUBSTANTIALLY TO AN AREA OF SAID PLATFORM CORRESPONDING TO THE BOTTOM OF THE DISH SUPPORTED THEREON; MEANS ABOVE SAID PLATFORM FOR PROJECTING A BEAM OF INFRARED RADIATION TOWARDS SAID PLATFORM AND CONFINING SAID BEAM SUBSTANTIALLY TO AN AREA OF SAID PLATFORM CORRESPONDING TO THE AREA OF THE SURFACE OF THE FOOD RECEIVED WITHIN THE DISH SUPPORTED THEREON; AND MEANS FOR COOLING SAID PLATFORM TO MAINTAIN THE UPPER SURFACE THEREOF BELOW A PREDETERMINED TEMPERATURE CORRESPONDING TO THE TEMPERATURE AT WHICH THE SYNTHETIC PLASTIC MATERIAL OF THE DISH SUPPORTED ON THE PLATFORM WILL BE AFFECTED ADVERSELY.
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |