US4851944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ganged MR head sensor
Assignee: Seagate Technology LLC
•
Filing: 1988-02-05
•
Granted: 1989-07-25
•
Expires: 2008-02-05
Abstract
Abstract A single magnetoresistive element ganged MR head sensor. The sensor is comprised of a single magnetoresistive element divided into a plurality of sense regions by more than two electrical contacts, the facing sides of each being parallel to each other and perpendicular to the lower edge of the element. No other transverse biasing is applied and the sensor operates in a non linear mode. The provision of no transverse biasing reduces cross talk.
Inventors
- 👤 Gregory S. Mowry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:59
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/33; G11B5/39; G11B5/3903; G11B5/3906; G11B5/3945; G11B5/3948; G11B5/3958; G11B5/3961; G01; G01R; G01R33/00; G01R33/02; G01R33/06; G01R33/09; G11B5/02; G11B5/09; G11B5/398; H; H10; H10N; H10N50/00; H10N50/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
An unbiased single magnetoresistive element ganged read head sensor comprising: an elongated magnetoresistive element; a plurality of sense current contacts contacting the element and defining a plurality of sense regions between the contacts, the regions of the element in the contact area being maintained with substantially the same coercivity as that of the sense regions; and no external magnetic field transverse biasing means therby operating the ganged read head sensor in a non-linear range.
Claim 2
Dependent Claim
74 words
An unbiased single magnetoresistive element ganged read head sensor comprising: an elongated magnetoresistive element; a plurality of sense current contacts contacting the element and defining a plurality of sense regions between the contacts, the regions of the element in the contact area being maintained with substantially the same coercivity as that of the sense regions; and no external magnetic field transverse biasing means therby operating the ganged read head sensor in a non-linear range.
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) | 1992-07-24 | 1993-01-23 | 1993-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-24 | 1997-01-23 | 1997-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-24 | 2001-01-23 | 2001-07-25 | $7700.00 | Window Closed / Lapsed |