US2999778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antimonide coated magnetic materials with lead and lead-antimony matrices
Assignee: General Electric Co
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Filing: 1957-12-16
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Granted: 1961-09-12
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Expires: 1977-12-16
Abstract
No abstract record available.
Inventors
- 👤 Lewis I Mendelsohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:15
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/04; H01F1/06; H01F1/061; B; B22; B22F; B22F1/00; B22F1/17; B82; B82Y; B82Y25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
IN A MAGNETIC STRUCTURE COMPRISING FINELY DIVIDED PARTICLES OF A MAGNETIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF IRON AND IRON-COBALT ALLOY, SAID PARTICLES BEING COATED WITH AN ANTIMONIDE OF SAID MATERIAL, A MATRIX OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF LEAD AND A LEAD-ANTIMONY ALLOY CONTAINING UP TO ABOUT 2 PERCENT BY WEIGHT OF ANTIMONY THERE BEING AT LEAST ABOUT ONE PART BY WEIGHT OF SAID MATRIX MATERIAL TO EACH PART BY WEIGHT OF MAGNETIC MATERIAL.
Claim 2
Dependent Claim
79 words
IN A MAGNETIC STRUCTURE COMPRISING FINELY DIVIDED PARTICLES OF A MAGNETIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF IRON AND IRON-COBALT ALLOY, SAID PARTICLES BEING COATED WITH AN ANTIMONIDE OF SAID MATERIAL, A MATRIX OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF LEAD AND A LEAD-ANTIMONY ALLOY CONTAINING UP TO ABOUT 2 PERCENT BY WEIGHT OF ANTIMONY THERE BEING AT LEAST ABOUT ONE PART BY WEIGHT OF SAID MATRIX MATERIAL TO EACH PART BY WEIGHT OF MAGNETIC MATERIAL.
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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) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |