US Patent No: 8,164,858
Number of patents in Portfolio can not be more than 2000
Read head having conductive filler in insulated hole through substrate
Stats
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Apr 24, 2012
Issued date -
Nov 4, 2009
filing date -
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12/612,575
serial no -
In Force
status (Note)
Importance
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Abstract
A novel read head includes a substrate having a trailing face and a leading face opposite the trailing face. The substrate includes a first hole therethrough that extends continuously from the trailing face to the leading face. The read head also includes a read transducer disposed on the trailing face, and a first plurality of electrically conductive trailing connection pads disposed on the trailing face. A first insulative layer is disposed on an inner surface of the first hole. A first electrically conductive filler is disposed in the first hole but is insulated from the substrate by the first insulative layer. A first electrically conductive leading connection pad is disposed on the leading face and is electrically connected to the first conductive filler.
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First Claim
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International Classification(s)
Cited Art Landscape
| Patent Info | (Count) | # Cites | Year |
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| 7,006,330 Head stack assembly including a ground conductive pad for grounding a slider to a gimbal | 20 | 2003 | |
| 7,027,264 Slider with a slider ground pad electrically connected to write head poles and read head shields | 11 | 2003 | |
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| 6,757,135 Leading edge bond pads | 9 | 2001 | |
| 7,254,885 Wafer-level fabrication method for top or side slider bond pads | 3 | 2002 | |
| * 7,929,248 Top bond pad for transducing head interconnect | 9 | 2006 | |
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| 6,349,017 Magnetic head suspension assembly using bonding pads of a slider to an attachment surface of a flexure | 37 | 1997 | |
| * 5,896,248 Bond pads for metal welding of flexure to air bearing slider and grounding configuration thereof | 42 | 1997 | |
| 6,125,014 Via-less connection using interconnect traces between bond pads and a transducer coil of a magnetic head slider | 13 | 1998 | |
| 6,796,018 Method of forming a slider/suspension assembly | 16 | 2001 | |
| 6,947,258 UV curable and electrically conductive adhesive for bonding magnetic disk drive components | 19 | 2002 | |
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| 5,530,604 Electrical connection and slider-suspension assembly having an improved electrical connection | 54 | 1994 | |
| 7,535,676 Slider with bonding pads opposite the air bearing surface | 5 | 2004 | |
| 2006/0181,808 Compact thin-film magnetic head and magnetic disk drive using the same | 3 | 2006 | |
| 2007/0047,144 Magnetic head slider and suspension for magnetic head | 4 | 2006 | |
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| 7,307,816 Flexure design and assembly process for attachment of slider using solder and laser reflow | 9 | 2001 | |
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| 5,068,759 Thin film magnetic head of small size capable of certainly and stably connecting lead wires | 24 | 1990 | |
| * 5,124,864 Magnetic head supporting device including a flexible member of polymeric resinous material | 40 | 1990 | |
| * 5,126,901 Thin film magnetic head having a narrow upper surface | 16 | 1990 | |
| 5,200,869 Flying type thin film magnetic head having a transducing element | 16 | 1991 | |
| * 5,384,432 Two-layered tape lead wire for magnetic head | 24 | 1993 | |
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| * 4,761,699 Slider-suspension assembly and method for attaching a slider to a suspension in a data recording disk file | 166 | 1986 | |
| 4,789,914 Thin film magnetic read-write head/arm assemblies | 91 | 1986 | |
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| * 5,914,834 Head suspension assembly with electrical interconnect by slider bond pads and gimbal bonding zones | 27 | 1997 | |
* Cited By Examiner
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Oct 24, 2015 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Oct 24, 2019 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 24, 2023 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |