US3253344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrating process using electromagnetic induction heating
Assignee: Individual
•
Filing: 1962-12-03
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Granted: 1966-05-31
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Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 Arthur Van Gelder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:42
CPC Classifications
F; F26; F26B; F26B5/00; F26B5/04; F26B5/06; F26B5/065; F26B23/00; F26B23/04; F26B3/00; F26B3/18; F26B3/20; F26B3/205
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
IN THE DEHYDRATION OF COMPOSITIONS THE STEPS OF PREPARING A FROZEN SNOW-LIKE POWDER OF THE MATERIAL TO BE DEHYDRATED, MIXING THE FROZEN POWDER WITH ELECTRICALLY CONDUCTIVE METAL SPHERES COATED TO PREVENT THE POWDER FROM STICKING THERETO AND COOLED TO A TEMPERATURE BELOW THE FREEZING POINT OF SAID POWDER, SUBJECTING THE MIXTURE IN A STATIC CONDITION TO A PRESSURE LOWER THAN ATMOSPHERIC, HEATING THE METAL SPHERES BY OSCILLATING IN-
References Cited (Backward Citations)
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US2388917A
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US2344754A
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US2552360A
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US2841339A
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US3024117A
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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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |