US3576672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of plasma spraying ferrite coatings and coatings thus applied
Assignee: Monsanto Research Corp
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Filing: 1969-06-12
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Granted: 1971-04-27
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Expires: 1989-06-12
Abstract
Abstract PROCESS FOR DEPOSITIING FERRITE COATINGS OF PREFERRED ORIENTATION AND CONTROLLED QUALITY BY USING A DIRECT CURRENT ARC PLASMA GENERATOR TO HEAT POWDERED FERRITES UNDER PRESCRIBED CONDTIONS, SAID COATINGS HAVING USEFUL MAGNETIC PROPERTIES.
Inventors
- 👤 Douglas H Harris
- 👤 Richard J Janowiecki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:48
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; H01F41/22; C; C23; C23C; C23C4/00; C23C4/04; C23C4/10; C23C4/11; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294
Claims Analysis
Total Claims: 0
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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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |