Patent US4809103A successfully refreshed from Google Patents.
US4809103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head slider with an integrated flat magnetic head
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1987-06-22
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Granted: 1989-02-28
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Expires: 2007-06-22
Abstract
Abstract An integrated structure is provided for magnetic recording which utilizes a silicon wafer having two parallel faces which are crystal planes of orientation 100. One face is designed so as to constitute a displacement plane when used as a read and write device in a magnetic support. The magnetic head has a horizontal structure and is integrated into the silicon wafer in the face having the displacement plane. An electronic circuit is integrated in the silicon wafer in one of the two faces and connections are provided between the magnetic head and the electronic circuit.
Inventors
- 👤 Jean-Pierre Lazzari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:31
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/31; G11B5/3163; G11B5/17; G11B5/3103; G11B5/3106; G11B5/48; G11B5/58; G11B5/60; G11B5/6005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A head slider configuration for magnetic recording on a recording media, comprising: a silicon wafer having a first face which is designed and arranged so that said first face is parallel to said recording media, and a second opposite face parallel to said first face wherein said first and second faces are each crystal planes of orientation 100; a flat magnetic head including a planar structure integrated within the first face of said silicon wafer and defining a linear media facing surface; an electronic circuit integrated in said silicon wafer on said second face; and electrical connection means for connecting said magnetic head and said circuit wherein said electrical connection means passes through said silicon wafer from said first face to said second face.
Claim 2
Dependent Claim
124 words
A head slider configuration for magnetic recording on a recording media, comprising: a silicon wafer having a first face which is designed and arranged so that said first face is parallel to said recording media, and a second opposite face parallel to said first face wherein said first and second faces are each crystal planes of orientation 100; a flat magnetic head including a planar structure integrated within the first face of said silicon wafer and defining a linear media facing surface; an electronic circuit integrated in said silicon wafer on said second face; and electrical connection means for connecting said magnetic head and said circuit wherein said electrical connection means passes through said silicon wafer from said first face to said second face.
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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) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |