US3206337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cobalt-platinum alloy and magnets made therefrom
Assignee: Hamilton Watch Co
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Filing: 1961-11-08
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Granted: 1965-09-14
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Expires: 1981-11-08
Abstract
No abstract record available.
Inventors
- 👤 Marlin S Walmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:30
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A PERMANENT MAGNET CONSISTING OF A COPT A SINGLE CRYSTAL ALLOY CONSISTING ESSENTIALLY OF ABOUT 18.5% TO 28.5% BY WEIGHT OF COBALT AND ABOUT 71.5% TO 81.5% BY WEIGHT OF PLATINM, SAID MAGNET BEING MAGNETICALLY ANISTROPIC AND HAVING MAXIMUM INTRINSIC COERCIVE FORCE WHICH IS ABOUT 25% HIGHER THAN THE INTRINSIC COERCIVE
Claim 2
Dependent Claim
51 words
A PERMANENT MAGNET CONSISTING OF A COPT A SINGLE CRYSTAL ALLOY CONSISTING ESSENTIALLY OF ABOUT 18.5% TO 28.5% BY WEIGHT OF COBALT AND ABOUT 71.5% TO 81.5% BY WEIGHT OF PLATINM, SAID MAGNET BEING MAGNETICALLY ANISTROPIC AND HAVING MAXIMUM INTRINSIC COERCIVE FORCE WHICH IS ABOUT 25% HIGHER THAN THE INTRINSIC COERCIVE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |