US3257586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible permanent magnet and composition
Assignee: Magnetfabrik Bonn GmbH
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Filing: 1961-03-02
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Granted: 1966-06-21
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Expires: 1981-03-02
Abstract
No abstract record available.
Inventors
- 👤 Steingroever Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:33
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/0027; H01F1/01; H01F1/03; H01F1/032; H01F1/10; H01F1/11; H01F1/113; H01F1/117; H01F7/00; H01F7/02; H01F7/0205; H01F7/021; H01F7/0215
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A FLEXIBLE MAGNETIC MOLDING STRIP COMPRISING A PERMANENTLY MAGNETIC LAYER HAVING OPPOSITE FLAT SURFACES AND CONTAINING MAGNETIC PARTICLES EMBEDDED IN A NON-MAGNETIC BINDER, SAID MAGNETIC PARTICLES BEING MAGNETICALLY ANISOTROPIC AND MAGNETIZED IN A DIRECTION PERPENDICULAR TO SAID SURFACES, AND A SOFT MAGNETIC LAYER INTIMATELY JOINED TO ONE OF SAID SURFACES AND PRESENTING AN UNINTERRUPTED RETURN PATH FOR THE MAGNETIC FLUX WHEN THE OTHER OF SAID FLAT SURFACES IS ADHERED TO A FERROMAGNETIC BASE, SAID SOFT MAGNETIC LAYER CONSISTING ESSENTIALLY OF A NONMAGNETIC BINDER AND IRON PARTICLES DISPERSED THEREIN.
Claim 2
Dependent Claim
88 words
A FLEXIBLE MAGNETIC MOLDING STRIP COMPRISING A PERMANENTLY MAGNETIC LAYER HAVING OPPOSITE FLAT SURFACES AND CONTAINING MAGNETIC PARTICLES EMBEDDED IN A NON-MAGNETIC BINDER, SAID MAGNETIC PARTICLES BEING MAGNETICALLY ANISOTROPIC AND MAGNETIZED IN A DIRECTION PERPENDICULAR TO SAID SURFACES, AND A SOFT MAGNETIC LAYER INTIMATELY JOINED TO ONE OF SAID SURFACES AND PRESENTING AN UNINTERRUPTED RETURN PATH FOR THE MAGNETIC FLUX WHEN THE OTHER OF SAID FLAT SURFACES IS ADHERED TO A FERROMAGNETIC BASE, SAID SOFT MAGNETIC LAYER CONSISTING ESSENTIALLY OF A NONMAGNETIC BINDER AND IRON PARTICLES DISPERSED THEREIN.
References Cited (Backward Citations)
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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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |