Steven A Mastain

6381833, May 7, 2002

Apr 15, 1999

09/292549

Steven A. Mastain - Chanhassen MN
Wallace A. Peck - Eagan MN
Diana M. Simplair - Savage MN
Kurt A. Rothstein - Bloomington MN

Seagate Technology LLC - Scotts Valley CA

G11B 5127

2960312, 2960315, 2960318, 360119, 360122, 216 22

A method for forming a top magnetic pole of an inductive magnetic head being begins with the step of forming a photolithographic material over a layer of insulating material at a hill region and gap region of the inductive magnetic head formed on a wafer and over a waste region of the wafer. Second, a mask is patterned on the photolithographic material defining a paddle region over the hill region, a feeder region over the waste region, and a trench region between the feeder region and the paddle region. The trench region extends over the gap region. Third solvent is admitted into the feeder region to flow in a laminar flow through the trench region to the paddle region to form the mask and expose a surface of the layer of insulating material in the paddle and trench regions of the mask.

6477007, Nov 5, 2002

Aug 29, 2000

09/649985

Alexander M. Shukh - Savage MN
Edward S. Murdock - Edina MN
Steven A. Mastain - Chanhassen MN
James K. Price - Tonka Bay MN

Seagate Technology LLC - Scotts Valley CA

G11B 5147

360126

A magnetic recording head having an air bearing surface comprises a writer having a substantially planar single piece top pole, a shared pole and a conductive coil. The top pole and shared pole are separated by a write gap region. A magnetic stud is positioned adjacent the write gap region near the air bearing surface. The magnetic stud provides a uniform magnetic flux supply to the write gap region. The magnetic stud has a variable height along the air bearing surface. An inner surface of the magnetic stud substantially conforms to an outer surface of the conductive coil. The shared pole includes a recess, and at least a portion of the conductive coil is positioned in the recess. The recess in the shared pole is filled with an insulator that substantially surrounds the portion of the conductive coil positioned in the recess. A capping layer is formed on the portion of the conductive coil positioned in the recess. The shared pole includes a common top surface comprising a top surface of the magnetic stud, a top surface of the insulator and a top surface of the capping layer.

20030039065, Feb 27, 2003

Oct 15, 2002

10/271954

Alexander Shukh - Savage MN, US
Edward Murdock - Edina MN, US
Steven Mastain - Chanhassen MN, US
James Price - Tonka Bay MN, US

G11B005/17

360/123000

A magnetic recording head having an air bearing surface comprises a writer having a substantially planar single piece top pole, a shared pole and a conductive coil. The top pole and shared pole are separated by a write gap region. A magnetic stud is positioned adjacent the write gap region near the air bearing surface. The magnetic stud provides a uniform magnetic flux supply to the write gap region. The magnetic stud has a variable height along the air bearing surface. An inner surface of the magnetic stud substantially conforms to an outer surface of the conductive coil. The shared pole includes a recess, and at least a portion of the conductive coil is positioned in the recess. The recess in the shared pole is filled with an insulator that substantially surrounds the portion of the conductive coil positioned in the recess. A capping layer is formed on the portion of the conductive coil positioned in the recess. The shared pole includes a common top surface comprising a top surface of the magnetic stud, a top surface of the insulator and a top surface of the capping layer. The common top surface is made substantially planar by chemical-mechanical polishing.

60162422, Jan 18, 2000

Aug 13, 1998

9/134779

Steven A. Mastain - Chanhassen MN
Wallace A. Peck - Eagan MN
Diana M. Simplair - Savage MN
Kurt A. Rothstein - Bloomington MN

Seagate Technology, Inc. - Scotts Valley CA

G11B 5187
G11B 523

360119

A mask forms a top magnetic pole piece of an inductive magnetic head having a layer of insulating material over a hill region and a gap region on a wafer. The mask comprises a layer of photolithographic material on the insulating material and a waste region of the wafer and includes a first aperture exposing the insulating material to define a paddle region of the pole piece over the hill region and a trench over the gap region. A second aperture is connected to the first aperture to define a feeder region over the waste region that funnels solvent to and through the trench and establishes laminar flow of solvent through the trench. Solvent is admitted into the feeder region for laminar flow through the trench region to form the mask and expose a surface of the layer of insulating material in the paddle and trench regions of the mask. The top pole piece defines a gap at an air bearing surface of the head having an average gap width not greater than 1. 0 microns with a standard deviation of the average gap widths no more than 0.

20170098459, Apr 6, 2017

Dec 19, 2016

15/383351

- Cupertino CA, US
Steven A. Mastain - Spring Park MN, US

G11B 5/39

A magnetic read head including a first read element magnetically coupled to a bottom shield; a second read element magnetically coupled to a top shield; a magnetic shielding structure that magnetically shields the first read element from the second read element; and a first electrical contact electrically coupled to the bottom shield, a second electrical contact electrically coupled to the top shield and a third electrical contact electrically coupled to the magnetic shielding structure.

20150170678, Jun 18, 2015

Dec 13, 2013

14/105434

- Cupertino CA, US
Steven A. Mastain - Spring Park MN, US

SEAGATE TECHNOLOGY LLC - Cupertino CA

G11B 5/11
G11B 5/127

A magnetic read head including a first read element magnetically coupled to a bottom shield; a second read element magnetically coupled to a top shield; a magnetic shielding structure that magnetically shields the first read element from the second read element; and a first electrical contact electrically coupled to the bottom shield, a second electrical contact electrically coupled to the top shield and a third electrical contact electrically coupled to the magnetic shielding structure.

20150098151, Apr 9, 2015

Oct 4, 2013

14/046487

- Cupertino CA, US
Steven A. Mastain - Spring Park MN, US
James K. Price - Excelsior MN, US

Seagate Technology LLC - Cupertino CA

G11B 5/29
G11B 5/48

3602345, 36012517, 2960316

A read head with at least two separately addressable read transducers that are coplanar in a cross track direction. The read transducers have a cross track width, w, and a center-to-center separation distance between the two read transducers either greater than 3wor the distance of two tracks of an associated medium in the cross track direction.

20150098152, Apr 9, 2015

Oct 4, 2013

14/046507

- Cupertino CA, US
Steven A. Mastain - Spring Park MN, US
James K. Price - Excelsior MN, US

Seagate Technology LLC - Cupertino CA

G11B 5/48
G11B 5/31
G11B 5/40

3602345, 36012504, 427 58

An apparatus such as a magnetic recording head with at least two separately addressable read transducers that are coplanar in a cross track direction. The apparatus includes first coplanar electrical contacts respectively disposed on and in electrical contact with first surfaces of the at least two read transducers and an electrically insulating magnetic material disposed between the electrical contacts.