Katalin Pentek

7110217, Sep 19, 2006

Oct 15, 2003

10/687284

Edward Hin Pong Lee - San Jose CA, US
Katalin Pentek - San Jose CA, US
Yong Shen - Saratoga CA, US
Sue Siyang Zhang - Saratoga CA, US

Hitachi Global Storage Technologies - Amsterdam

G11B 5/147

360126

A magnetic head having an air bearing surface (ABS) and a first pole tip. A second pole tip is spaced apart from and facing the upper end of the first pole tip across a write gap. A bump extends into a portion of the upper end of the first pole tip and a portion of the bottom end of the second pole tip, the bump being positioned away from the ABS. The bump defines a throat height of the first and second pole tips.

7380330, Jun 3, 2008

Jul 21, 2005

11/186174

Daniel Wayne Bedell - Gilroy CA, US
Aron Pentek - San Jose CA, US
Katalin Pentek - San Jose CA, US
Yi Zheng - San Ramon CA, US

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

G11B 5/127

2960312, 2960307, 2960313, 2960315, 2960318

After defining the P2 pole of a magnetic read head, alumina is deposited over it and planarized by CMP, with the portion of the alumina overlaying the ABS region of the P2 pole subsequently being masked by a photoresist layer and with the portions of the alumina overlaying the flare area, back gap region, and center tap regions of the P2 pole not being masked. A reactive ion mill is performed to expose the flare area, back gap region, and center tap regions of the P2 pole by removing the alumina over these portions, so that subsequent steps such as forming a layer of coiled conductors, forming a return pole, and forming stud connections along with removing the respective seed layers can be executed with the ABS region protected by the alumina and with the flare area, back gap region, and center tap region exposed.

7576951, Aug 18, 2009

Apr 25, 2006

11/411556

Donald G. Allen - Morgan Hill CA, US
Amanda Baer - Campbell CA, US
Michael Feldbaum - San Jose CA, US
Hung-Chin Guthrie - Saratoga CA, US
Wen-Chien David Hsiao - San Jose CA, US
Yimin Hsu - Sunnyvale CA, US
Ming Jiang - San Jose CA, US
Yinshi Liu - Foster City CA, US
Aaron Neuhaus - San Jose CA, US
Vladimir Nikitin - Campbell CA, US
Aron Pentek - San Jose CA, US
Katalin Pentek - San Jose CA, US
Yi Zheng - San Ramon CA, US

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

G11B 5/127

36012513

A magnetic write head for perpendicular magnetic recording having a write pole with a concave trailing edge. The magnetic write pole can have a trapezoidal shape with first and second laterally opposed sides that are further apart at the trailing edge than at the leading edge. The write head may or may not include a magnetic trailing shield, and if a trailing shield is included it is separated from the trailing edge by a non-magnetic write gap layer. The concave trailing edge improves magnetic performance such as by improving the transition curvature. A method for constructing the write head includes forming a magnetic write pole by forming a mask structure over a deposited write pole material, the mask structure having an alumina hard mask and an image transfer layer such as DURAMIDE. An alumina fill layer is then deposited and a chemical mechanical polish is performed to open up the image transfer layer. A reactive on etch is performed to remove the image transfer layer and a reactive ion mill or reactive ion etch is performed to remove the alumina hard mask and form a concave surface on the write pole.

7593183, Sep 22, 2009

Apr 25, 2006

11/411590

Wen-Chien David Hsiao - San Jose CA, US
Yimin Hsu - Sunnyvale CA, US
Edward Hin Pong Lee - San Jose CA, US
Vladimir Nikitin - Campbell CA, US
Katalin Pentek - San Jose CA, US

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

G11B 5/17
G11B 5/147

36012309, 36012312

A magnetic write pole having a structure that prevents thermally induced pole tip protrusion. The write head has a return pole with a magnetic pedestal formed at the air bearing surface (ABS) and a back gap at an end opposite the ABS. An electrically conductive write coil having a plurality of turns passes over the return pole. A fill layer of a material having a low coefficient of thermal expansion, such as alumina is disposed between the coil and the pedestal, and may extend over the top of the coil to the back gap. A photoresist coil insulation layer may be provided between the turns of the coil to insulate the turns of the coil from one another. The photoresist coil insulation layer can also extend to the back gap. A write pole, formed above the return pole and coil is magnetically connected with the back gap layer and return pole by a magnetic shaping layer.

7748103, Jul 6, 2010

Apr 24, 2006

11/379969

Donald G. Allen - Morgan Hill CA, US
Amanda Baer - Campbell CA, US
Michael Feldbaum - San Jose CA, US
Wen-Chien David Hsiao - San Jose CA, US
Vladimir Nikitin - Campbell CA, US
Aron Pentek - San Jose CA, US
Katalin Pentek - San Jose CA, US

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

G11B 5/187
G11B 5/23

2960315, 2960313, 2960311, 2960318, 36012503, 36011902

A perpendicular magnetic recording write head has a write pole, a trapezoidal-shaped trailing shield notch, and a metal gap layer between the write pole and notch. The write pole has a trailing edge that has a width substantially defining the track width and that faces the front edge of the notch but is spaced from it by the gap layer. The write head is fabricated by reactive ion beam etching of a thin mask film above the write pole to remove the mask film and widen the opening at the edges of the write pole. The gap layer and notch are deposited into the widened opening above the write pole. The write pole has nonmagnetic filler material, such as alumina, surrounding it except at its trailing edge, where it is in contact with the gap layer, which is formed of a different material than the surrounding filler material.

8201320, Jun 19, 2012

Dec 17, 2009

12/641242

Donald G. Allen - Morgan Hill CA, US
Yingjian Chen - Fremont CA, US
Andrew Chiu - San Jose CA, US
Liubo Hong - San Jose CA, US
Wen-Chien D. Hsiao - San Jose CA, US
Edward H. P. Lee - San Jose CA, US
Fenglin Liu - Milpitas CA, US
Katalin Pentek - San Jose CA, US
Kyusik Shin - Pleasanton CA, US
Yi Zheng - San Ramon CA, US
Qiping Zhong - San Jose CA, US
Honglin Zhu - Fremont CA, US

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

H04R 31/00
G11B 5/127

2960316, 2960311, 2960313, 2960314, 2960315, 2960318, 216 22, 216 39, 216 41, 216 48, 216 65, 360121, 360122, 360317, 451 5, 451 41

A method for manufacturing a magnetic write head having a leading magnetic shield and a trailing magnetic shield that are arranged to prevent the lost of magnetic write field to the trailing magnetic shield. The write head includes a non-magnetic step layer that provides additional spacing between the trailing magnetic shield and the write pole at a region removed from the air bearing surface.

8441757, May 14, 2013

Dec 9, 2009

12/634456

Yingjian Chen - Fremont CA, US
Liubo Hong - San Jose CA, US
Yimin Hsu - Sunnyvale CA, US
Edward Hin Pong Lee - San Jose CA, US
Katalin Pentek - San Jose CA, US

HGST Netherlands B.V. - Amsterdam

G11B 5/11
G11B 5/187

36012513, 36011903, 36011904, 36012512, 3601253

A magnetic write head having a write pole with a tapered trailing edge. The write head has a non-magnetic step layer and a non-magnetic bump formed on the front edge of the magnetic step layer. A non-magnetic trailing gap layer is formed over the tapered trailing edge of the write pole and over the non-magnetic bump and over the non-magnetic step layer. A magnetic trailing shield is formed over at least a portion of the non-magnetic gap layer.

8547660, Oct 1, 2013

Dec 17, 2009

12/641251

Donald G. Allen - Morgan Hill CA, US
Amanda Baer - Campbell CA, US
Yingjian Chen - Fremont CA, US
Andrew Chiu - San Jose CA, US
Liubo Hong - San Jose CA, US
Wen-Chien D. Hsiao - San Jose CA, US
Edward H. P. Lee - San Jose CA, US
Fenglin Liu - Milpitas CA, US
Aron Pentek - San Jose CA, US
Katalin Pentek - San Jose CA, US
Kyusik Shin - Pleasanton CA, US
Yi Zheng - San Ramon CA, US
Qiping Zhong - San Jose CA, US
Honglin Zhu - Fremont CA, US

HGST Netherlands B.V. - Amsterdam

G11B 5/127

36012513, 36012514, 36012515

A magnetic write head having a tapered trailing edge and having a magnetic layer formed over a trailing edge of the write pole at a location recessed from the ABS, the magnetic layer being separated from the trailing edge of the write pole by a thin non-magnetic layer. The thin non-magnetic layer is preferably sufficiently thin that the magnetic layer can function as a portion of the write pole in a region removed from the ABS. A trailing magnetic shield is formed over the write pole and is separated from the write pole by a non-magnetic trailing gap layer. A non-magnetic spacer layer can be formed over the magnetic layer to provide additional separation between the magnetic layer and the trailing magnetic shield.