US3102181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency heating furnaces operating with very high frequencies
Assignee: US Philips Corp
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Filing: 1960-05-02
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Granted: 1963-08-27
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Expires: 1980-05-02
Abstract
No abstract record available.
Inventors
- 👤 Verstraten Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:58
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/70; H05B6/705; H01; H01Q; H01Q13/00; H01Q13/02; H01Q19/00; H01Q19/10; H01Q19/12; H05B6/66; H05B6/68; H05B6/688; H05B6/701; H05B6/78
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A HIGH FREQUENCY FURNACE COMPRISING A HIGH FREQUENCY GENERATOR AND A WAVE GUIDE YSTEM, SAID WAVE GUIDE SYSTEM COMPRISING FIRST, SECOND AND THIRD WALL PORTIONS DEFINING AN ENCLOSURE HAVING AN OPEN END, SAID FIRST WALL PORTION HAVING A PARABOLIC SHAPE AND SAID SECOND AND THIRD WALL PORTIONS FORMING TWO PARALLEL BOUNDARY SURFACES AT RIGHT ANGLES TO SAID WALL OF PARABOLIC SHAPE, WAVE ENERGY RADIATING MEANS ARRANGED AT THE FOCAL LINE OF SAID PARABOLIC WALL, MEANS FOR COUPLING SAID GENERATOR TO SAID RADIATING MEANS, MEANS FOR SUPPORTING OBJECTS TO BE HEATED AT SAID OPEN END OF SAID ENCLOSURE, AND SHIELD MEANS ENCLOSING SAID SUPPORT MEANS ADJACENT THE OPEN END OF SAID WAVEGUIDE SYSTEM.
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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) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |