Kevin T Lin

US Patent:

6496334, Dec 17, 2002

Filed:

May 26, 2000

Appl. No.:

09/579663

Inventors:

Song Pang - Fremont CA
Lijun Tong - Fremont CA
Kevin Lin - San Ramon CA
Joyce Hsiang - San Ramon CA

Assignee:

Read-Rite Corportion - Fremont CA

International Classification:

G11B 539

US Classification:

360319

Abstract:

In at least one embodiment, the apparatus of the invention is a read sensor comprising a shield, a sensor element, an extra shield between the shield and the sensor element, an extra gap between the shield and the sensor and adjacent the extra shield, and a gap layer between the sensor element and the extra shield. The sensor element is positioned in a sensor layer. With the extra shield adjacent to the sensor element and separated by only the relatively thin gap layer, high areal recording density and excellent instability of the sensor element is obtained. At the same time, by fabricating the extra shield to be not significantly wider than the sensor element, the potential for shorting is minimized by placing both the gap and the thicker extra gap between the sensor lead elements and the shield. In at least one embodiment, the method of the invention is for fabricating a read sensor and comprises depositing an extra gap layer onto a shield, removing a portion of the extra gap layer to form a cavity, depositing an extra shield into the cavity, planarizing the extra gap and the extra shield, depositing a gap layer onto the extra gap and the extra shield, and depositing a sensor element onto the gap layer and adjacent to the extra shield.

US Patent:

6776891, Aug 17, 2004

Filed:

May 18, 2001

Appl. No.:

09/859363

Inventors:

Chaopeng Chen - Fremont CA
Kevin Lin - San Ramon CA
Jei Wei Chang - Cupertino CA

Assignee:

Headway Technologies, Inc. - Milpitas CA

International Classification:

C25D 356

US Classification:

205 89, 205103, 205104, 205119, 205148, 205259

Abstract:

A method for forming a plated magnetic thin film of high saturation magnetization and low coercivity having the general form Co Fe M , where M can be Mo, Cr, W, Ni or Rh, which is suitable for use in magnetic recording heads that write on narrow trackwidth, high coercivity media. The plating method includes four current application processes: direct current, pulsed current, pulse reversed current and conditioned pulse reversed current.

US Patent:

6859997, Mar 1, 2005

Filed:

Sep 19, 2000

Appl. No.:

09/665431

Inventors:

Lijun Tong - San Jose CA, US
Kevin Lin - San Ramon CA, US
Joyce Hsiang - San Ramon CA, US
Yirong Hu - Sunnyvale CA, US

Assignee:

Western Digital (Fremont), Inc. - Lake Forest CA

International Classification:

G11B005/127
H04R031/00

US Classification:

2960313, 2960307, 2960313, 2960314, 2960315, 2960325, 360121, 360123, 360126, 360317, 427127, 427128, 261 22, 261 38, 261 41

Abstract:

The present invention provides a magnetic write element for use in a magnetic data recording system such as a disk drive. The invention provides a method of manufacturing a well defined coil, which avoids the problem of shallow wall angle problems exhibited by prior art methods due to coil mask shrinkage during high temperature bake. A series of trenches are provided in the coil mask, the trenches being shallower than the coil pattern, and not extending completely through the coil pattern. During the high temperature baking process shrinkage of the coil mask will be absorbed by the trenches and not transferred to the coil pattern, preventing deformation of the coil wall portion of the mask.

US Patent:

6973712, Dec 13, 2005

Filed:

Mar 7, 2002

Appl. No.:

10/093106

Inventors:

Chao-Peng Chen - Fremont CA, US
Kevin Lin - San Ramon CA, US
Kochan Ju - Fremont CA, US
Hui-Chuan Wang - Pleasanton CA, US

Assignee:

Headway Technologies, Inc. - Milpitas CA

International Classification:

G11B005/127
H04R031/00

US Classification:

2960314, 2960307, 2960315, 2960316, 2960318, 205119, 205122, 3602341, 36032411, 36032412, 3603242, 427127, 427128, 438369, 438396, 438706, 438720, 438722, 451 5, 451 41

Abstract:

A major problem in Lead Overlay design for GMR structures is that the magnetic read track width is wider than the physical read track width. This is due to high interfacial resistance between the leads and the GMR layer which is an unavoidable side effect of prior art methods. The present invention uses electroplating preceded by a wet etch to fabricate the leads. This approach requires only a thin protection layer over the GMR layer to ensure that interface resistance is minimal. Using wet surface cleaning avoids sputtering defects and plating is compatible with this so the cleaned surface is preserved Only a single lithography step is needed to define the track since there is no re-deposition involved.

US Patent:

7111386, Sep 26, 2006

Filed:

Nov 3, 2005

Appl. No.:

11/266418

Inventors:

Chao-Peng Chen - Fremont CA, US
Kevin Lin - San Ramon CA, US
Kochan Ju - Fremont CA, US
Hui-Chuan Wang - Pleasanton CA, US

Assignee:

Headway Technologies, Inc. - Milpitas CA

International Classification:

G11B 5/127
H04R 31/00

US Classification:

2960314, 2960307, 2960315, 2960316, 2960318, 205119, 205122, 3602341, 36032411, 36032412, 3603242, 427127, 427128, 438369, 438396, 438706, 438720, 438722, 451 5, 451 41

Abstract:

A major problem in Lead Overlay design for GMR structures is that the magnetic read track width is wider than the physical read track width. This is due to high interfacial resistance between the leads and the GMR layer which is an unavoidable side effect of prior art methods. The present invention uses electroplating preceded by a wet etch to fabricate the leads. This approach requires only a thin protection layer over the GMR layer to ensure that interface resistance is minimal. Using wet surface cleaning avoids sputtering defects and plating is compatible with this so the cleaned surface is preserved Only a single lithography step is needed to define the track since there is no re-deposition involved.

US Patent:

7192662, Mar 20, 2007

Filed:

Aug 2, 2004

Appl. No.:

10/909529

Inventors:

Chaopeng Chen - Fremont CA, US
Kevin Lin - San Ramon CA, US
Jei Wei Chang - Cupertino CA, US

Assignee:

Headway Technologies, Inc. - Milpitas CA

International Classification:

G11B 5/33

US Classification:

428812, 148312, 148311

Abstract:

A plated magnetic thin film of high saturation magnetization and low coercivity having the general form CoFeM, where M can be Mo, Cr, W, Ni or Rh, which is suitable for use in magnetic recording heads that write on narrow trackwidth, high coercivity media. The plating method that produces the alloy includes four current application processes: direct current, pulsed current, pulse reversed current and conditioned pulse reversed current.

US Patent:

8090901, Jan 3, 2012

Filed:

May 14, 2009

Appl. No.:

12/466277

Inventors:

Kevin Kwun-Nan Lin - Saratoga CA, US
Gefan Zhang - San Jose CA, US

Assignee:

Brocade Communications Systems, Inc. - San Jose CA

International Classification:

G06F 13/00
G11C 15/00

US Classification:

711108, 711E12001, 365 491, 365 4916

Abstract:

Methods for efficiently managing a ternary content-addressable memory (TCAM) by minimizing movements of TCAM entries include determining a first node and a second node in the TCAM, determining if there is a free TCAM entry between the first node and the second node, and storing the new entry in the free TCAM entry. Upon determining that a free TCAM entry does not exist between the first node and the second node, further determining a chain of nodes and then determining if there is a free TCAM entry in the chain of nodes. Upon determining that there is a free TCAM entry within the chain of nodes, moving the TCAM entries identified as the nodes in the chain of nodes to generate a free node nearest to the new entry and inserting the new entry in the free node. Moving the TCAM entries identified as the nodes in the chain of nodes preserves the order of the nodes.

US Patent:

8166631, May 1, 2012

Filed:

Aug 27, 2008

Appl. No.:

12/199624

Inventors:

Ut Tran - San Jose CA, US
Zhigang Bai - Milpitas CA, US
Kevin K. Lin - San Ramon CA, US

Assignee:

Western Digital (Fremont), LLC - Fremont CA

International Classification:

G11B 5/17
H04R 31/00

US Classification:

2960314, 2960313, 2960315, 2960316, 2960318, 216 22, 216 39, 216 41, 216 48, 216 65, 360121, 360122, 360317, 427127, 427128

Abstract:

A method provides a magnetic transducer that includes an underlayer and a nonmagnetic layer on the underlayer. The method includes providing a plurality of trenches in the nonmagnetic layer. A first trench of corresponds to a main pole, while at least one side trench corresponds to at least one side shield. The method also includes providing mask covering the side trench(es) and providing the main pole. At least a portion of the main pole resides in the first trench. The method also includes removing at least a portion of the nonmagnetic layer residing between the side trench(es) and the main pole. The method also includes providing at least one side shield. The shield(s) extend from at least an air-bearing surface location to not further than a coil front location.

Address:

17 Charity, Irvine, CA 92612

VIN:

2T2ZK1BA2AC013039

Make:

LEXUS

Model:

RX 350

Year:

2010