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US3849622A
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US
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Non-ionic fluid thermometer for microwave oven
Assignee: Individual
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Filing: 1971-04-19
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Granted: 1974-11-19
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Expires: 1991-04-19
Abstract
Abstract A non-ionic fluid thermometer for sensing the temperature of substances such as meat during cooking by microwave radiation, including a non-ionic fluid such as diphenyl, toluene, etc., used as a heat indicator which is subjected to heating by conduction and is substantially non-responsive to microwave radiation, the non-ionic fluid expanding and indicating the meat temperature in connection with calibrated indicia.
Inventors
- 👤 C Merriam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:13
CPC Classifications
G; G01; G01K; G01K5/00; G01K5/02; G01K5/04; G01K5/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
76 words
A method determining the temperature of food being heated in a microwave oven through microwave energy comprising the steps of: providing a heat responsive thermometer being non-responsive to microwave energy and having a hollow portion containing an expandable fluid also being nonresponsive to said microwave energy; inserting the termometer into the food to be heated in a heat transferring relationship; placing the food and thermometer into the microwave oven and heating the food by microwave energy.
Claim 2
Independent Claim
76 words
A method determining the temperature of food being heated in a microwave oven through microwave energy comprising the steps of: providing a heat responsive thermometer being non-responsive to microwave energy and having a hollow portion containing an expandable fluid also being nonresponsive to said microwave energy; inserting the termometer into the food to be heated in a heat transferring relationship; placing the food and thermometer into the microwave oven and heating the food by microwave energy.
Claim 3
Dependent Claim
14 words
The method of claim 1 in which said expandable fluid is a non-ionic liquid.
Claim 4
Dependent Claim
14 words
The method of claim 2 in which said non-ionic liquid is an organic liquid.
Claim 5
Dependent Claim
12 words
The method of claim 2 in which said non-ionic liquid is diphenyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |