US3585258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of firing ceramic articles utilizing microwave energy
Assignee: Individual
•
Filing: 1969-05-21
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Granted: 1971-06-15
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Expires: 1989-05-21
Abstract
Abstract A PROCESS FOR FIRING CERAMIC ARTICLES IN WHICH THE ARTICLES ARE FED INTO A MICROWAVE CAVITY WHEREIN A PLURALITY OF PARTICLES OF RESISTIVE MATERIALS ARE LOCATED IN A PREDETERMINED FIXED RELATIONSHIP WITH RESPECT TO THE ARTICLES. MICROWAVE ENERGY IS EMITTED TO THE PARTICLES SO AS TO GENERATE A MULTITUDE OF ARCS THERETHROUGH TO THEREBY CONVERT SAID MICROWAVE ENERGY INTO A HIGH REFRACTORY HEAT ENERGY FOR FIRING THE ARTICLES.
Inventors
- 👤 Melvin L Levinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:37
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B33/00; C04B33/22; H; H05; H05B; H05B6/00; H05B6/64; H05B6/80; H05B2206/00; H05B2206/04; H05B2206/046; Y; Y10; Y10S; Y10S65/00; Y10S65/04
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |