US4335410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film magnetic transducer
Assignee: Magnex Corp
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Filing: 1980-04-04
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Granted: 1982-06-15
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Expires: 2000-04-04
Abstract
Abstract A method for formation of thin film inductive magnetic transducers wherein a minimum number of basic photomasks are utilized for deposition of successive thin film winding layers, and wherein all odd-to-even inter-film electrical contact points are disposed in a first transverse alignment through the transducer, and all even-to-odd inter-film contacts are aligned in a second transverse alignment through the transducer that is closely adjacent the first transverse alignment.
Inventors
- 👤 William F. Neu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:04
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/33; G11B5/332; G11B5/17; G11B5/31; G11B5/3163
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
235 words
A thin film magnetic transducer, comprising: a first conductive thin film having a configuration defining a lead portion, a throat portion, and a contact area portion terminating at a first position relative to the plane of the thin film; at least one even layer conductive thin film having a configuration beginning at said first position and extending to overlay a part of said lead portion, said throat portion, and terminating at a second position relative to the plain of the thin film that is adjacent said first position; at least one odd layer conductive thin film having a configuration beginning at said second position and extending to overlay a part of said lead portion, said throat portion, and terminating at said first position in superposition to the contact area of said first conductive thin film; a last conductive thin film having a configuration beginning at said first position and extending to overlay a part of said lead portion, said throat portion, and terminating in a second lead portion; insulative thin film means disposed between all of said conductive thin films; means providing conductive contact between the first position of all odd layer conductive thin films and the similar position of the overlaid even layer conductive thin film; and means providing conductive contact between the second position of all even layer conductive thin films and the similar position of the overlaid odd layer conductive thin film.
Claim 2
Dependent Claim
235 words
A thin film magnetic transducer, comprising: a first conductive thin film having a configuration defining a lead portion, a throat portion, and a contact area portion terminating at a first position relative to the plane of the thin film; at least one even layer conductive thin film having a configuration beginning at said first position and extending to overlay a part of said lead portion, said throat portion, and terminating at a second position relative to the plain of the thin film that is adjacent said first position; at least one odd layer conductive thin film having a configuration beginning at said second position and extending to overlay a part of said lead portion, said throat portion, and terminating at said first position in superposition to the contact area of said first conductive thin film; a last conductive thin film having a configuration beginning at said first position and extending to overlay a part of said lead portion, said throat portion, and terminating in a second lead portion; insulative thin film means disposed between all of said conductive thin films; means providing conductive contact between the first position of all odd layer conductive thin films and the similar position of the overlaid even layer conductive thin film; and means providing conductive contact between the second position of all even layer conductive thin films and the similar position of the overlaid odd layer conductive thin film.
Claim 3
Dependent Claim
25 words
A magnetic transducer as set forth in claim 1 which further comprises: pole means insulatively disposed adjacent the throat portion of said conductive thin films.
Claim 4
Dependent Claim
33 words
A magnetic transducer as set forth in claim 1 which further includes: a center tap conductive thin film interposed for connection to the transducer inductive center and extending a center tap lead portion.
Claim 5
Dependent Claim
48 words
A magnetic transducer as set forth in claim 3 wherein said center tap conductive thin film comprises: an even layer conductive thin film configuration that extends from said first position to overlay said throat portion and second position, and extending to terminate in a center tap lead portion.
Claim 6
Dependent Claim
35 words
A magnetic transducer as set forth in claim 3 wherein said center tap conductive thin film comprises: a linear thin film configuration extending from said second position to terminate in a center tap lead portion.
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) | 1985-06-14 | 1985-12-14 | 1986-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-14 | 1989-12-14 | 1990-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-14 | 1993-12-14 | 1994-06-15 | $7700.00 | Window Closed / Lapsed |