US4495392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave simmer pot
Assignee: Raytheon Co
•
Filing: 1982-01-07
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Granted: 1985-01-22
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Expires: 2002-01-07
Abstract
Abstract A microwave cooking system comprising a thermally insulated holder for food bodies having a thermally reflective shield for reflecting thermal radiation from the food bodies to thereby reduce the loss of heat by radiation through the thermal insulation layer while providing for propagation of microwave energy into the food body through the thermal insulating portion of the food holder.
Inventors
- 👤 Palmer P. Derby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:06
CPC Classifications
A; A47; A47J; A47J36/00; A47J36/02; A47J36/027; Y; Y10; Y10S; Y10S99/00; Y10S99/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A cooking utensil for heating food with microwave energy, comprising: a microwave transparent container for holding food, said container having thick, low thermal conductivity walls; a first microwave and thermal radiation reflective layer covering a portion of the outer surface of said container; a second microwave and thermal radiation reflective layer covering a portion of the inner surface of said container, said first and second layers partially overlapping; a lid removably positioned over said container, said lid having low thermal conductivity; and said first and second layers being spaced by the thickness of said walls of said container to provide a path through said microwave transparent walls in the region of said overlap for microwave energy to enter the interior of said container to heat said food.
Claim 2
Dependent Claim
127 words
A cooking utensil for heating food with microwave energy, comprising: a microwave transparent container for holding food, said container having thick, low thermal conductivity walls; a first microwave and thermal radiation reflective layer covering a portion of the outer surface of said container; a second microwave and thermal radiation reflective layer covering a portion of the inner surface of said container, said first and second layers partially overlapping; a lid removably positioned over said container, said lid having low thermal conductivity; and said first and second layers being spaced by the thickness of said walls of said container to provide a path through said microwave transparent walls in the region of said overlap for microwave energy to enter the interior of said container to heat said food.
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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) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |