US2828233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating and annealing process for magnetic materials and coated article produced thereby
Assignee: Individual
•
Filing: 1956-06-06
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Granted: 1958-03-25
•
Expires: 1976-06-06
Abstract
No abstract record available.
Inventors
- 👤 William P Langworthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:14
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/0206; H01F41/0233; B; B32; B32B; B32B15/00; C; C21; C21D; C21D8/00; C21D8/12; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/40; C23C16/405; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/16; H01F1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
THE PROCESS OF PRODUCING COATED LAMINATIONS OF MATERIAL WHOSE MAGNETIC PROPERTIES ARE IMPROVED BY A HIGH TEMPERATURE ANNEALING IN A SUITABLE MEDIUM WHICH INCLUDES STAMPING A LAMINATION OF SAID MATERIAL, HEATING THE LAMINATION, PASSING THE HEATED LAMINATION THROUGH A MIST OF A DILUTE SOLUTION OF A METAL NITRATE IN ANHYDROUS ETHANOL, THE HEATING BEING TO A DEGREE HIGH ENOUGH THAT IT WILL BREAK DOWN THE METAL NITRATE INTO THE METAL OXIDE, STACKING THE LAMINATIONS, AND ANNEALING THE STACKED LAMINATIONS AT A TEMPERATURE HIGHER THAN THE ONE TO WHICH THE LAMINATIONS WERE SUBJECTED DURING THE HEREINABOVE MENTIONED HEATING STEP, THE ANNEALING BEING CARRIED OUT IN THE PRESENCE OF AN ANNEALING MEDIUM.
Claim 2
Dependent Claim
110 words
THE PROCESS OF PRODUCING COATED LAMINATIONS OF MATERIAL WHOSE MAGNETIC PROPERTIES ARE IMPROVED BY A HIGH TEMPERATURE ANNEALING IN A SUITABLE MEDIUM WHICH INCLUDES STAMPING A LAMINATION OF SAID MATERIAL, HEATING THE LAMINATION, PASSING THE HEATED LAMINATION THROUGH A MIST OF A DILUTE SOLUTION OF A METAL NITRATE IN ANHYDROUS ETHANOL, THE HEATING BEING TO A DEGREE HIGH ENOUGH THAT IT WILL BREAK DOWN THE METAL NITRATE INTO THE METAL OXIDE, STACKING THE LAMINATIONS, AND ANNEALING THE STACKED LAMINATIONS AT A TEMPERATURE HIGHER THAN THE ONE TO WHICH THE LAMINATIONS WERE SUBJECTED DURING THE HEREINABOVE MENTIONED HEATING STEP, THE ANNEALING BEING CARRIED OUT IN THE PRESENCE OF AN ANNEALING MEDIUM.
References Cited (Backward Citations)
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US2327002A
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US2243849A
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US2314565A
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US2318606A
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US2410220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |