US2714070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave heating apparatus and method of heating a food package
Assignee: Raytheon Co
•
Filing: 1950-04-04
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Granted: 1955-07-26
•
Expires: 1970-04-04
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:54
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; B65D81/3453; B65D2581/00; B65D2581/34; B65D2581/3401; B65D2581/3429; B65D2581/3431; B65D2581/3437; B65D2581/3486; B65D2581/3489; Y; Y10; Y10S; Y10S99/00; Y10S99/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
THE METHOD WHICH CONSISTS IN DIELECTRICALLY HEATING A FOOD PACKAGE BY MEANS OF HIGH FREQUENCY ALTERNATING CURRENT AND CONTROLLING THE HEATING EFFECT BY AN ELECTRICALLY CONDUCTIVE SHIELD POSITIONED IN PROXIMITY TO A PORTION OF THE FOOD PACKAGE AND ACTING TO PREVENT ACCESS OF THE HIGH FREQUENCY WAVES TO PORTIONS OF THE PACKAGE AND TO CAUSE THE HIGH FREQUENCY WAVES TO REACH AND HEAT SOME PORTIONS OF THE PACKAGE TO A GREATER DEGREE THAN OTHER PORTIONS THEREOF.
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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) | 1958-07-25 | 1959-01-24 | 1959-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-25 | 1963-01-24 | 1963-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-25 | 1967-01-24 | 1967-07-26 | $7700.00 | Window Closed / Lapsed |