Richard Y Hsiao, Age 696601 Neptune Ct, San Jose, CA 95120

6338939, Jan 15, 2002

Aug 24, 2000

09/645163

Thomas Carl Clarke - Morgan Hills CA
Richard Hsiao - San Jose CA
Eric James Lee - San Jose CA
Hugo Alberto Emilio Santini - San Jose CA

International Business Machines Corporation - Armonk NY

G11B 517

430320, 430314, 430319, 2960314, 2960315, 2960318, 2960325

A read/write head is provided with an embedded planar dual coil write structure. The head includes generally parallel shield, shield/pole, and pole layers. The shield/pole layer abuts a generally coplanar planarization layer in one embodiment. A circuitous recess is defined in the shield/pole and planarization layer, spanning the junction twice and encircling a central hub of adjoining shield/pole and planarization layer material. A write structure is located in the recess, with the shield/pole layer, planarization layer, and embedded write structure forming a substantially flat surface for building the pole layer. The write structure includes first and second substantially co-planar multi-turn flat coils, where turns of the first write coil are interspersed with turns of the second write coil. The first and second write coils reside in the circuitous recess, winding around the central hub. An insulating material separates the first and second coils.

6346183, Feb 12, 2002

Aug 3, 2000

09/632501

Amanda Baer - Campbell CA
Richard Hsiao - San Jose CA
Cherngye Hwang - San Jose CA
Clinton David Snyder - Los Gatos CA
Hong Xu - San Jose CA

International Business Machines Corporation - Armonk NY

C25C 1434

205119, 2041922, 427131

A fabrication method using a bottom anti-reflective coating (BARC) eliminating deleterious effects of unwanted reflected light during the photo exposure step of a photolithographic process. The BARC coating comprises a carbon coating having a thickness of 300 angstroms, deposited by a carbon ion beam deposition tool, and an initial silicon BARC coating layer having thickness of 20 angstroms deposited before the carbon coating. Where the BARC layer is utilized in a photolithographic NiFe pole tip fabrication process, a NiFe seed layer is first deposited upon a substrate. The BARC layer is then formed on the NiFe seed layer and the pole tip trench is then photolithographically created. Thereafter, the BARC layer is removed from the bottom of the trench, utilizing a reactive ion etch process, exposing the NiFe seed layer. The NiFe pole tip is then fabricated into the trench, and any remaining photoresist and BARC layer are removed.

6377423, Apr 23, 2002

Jan 16, 2001

09/761034

Robert E. Fontana - San Jose CA
Richard Hsiao - San Jose CA
Hugo Alberto Emilio Santini - San Jose CA

International Business Machines Corporation - Armonk NY

G11B 5147

360126

A write head has a second pole tip layer, a coil layer and a write coil insulation layer that are planarized at their top surfaces. A thin top insulation layer insulates the top of the coil layer from a yoke portion of the second pole piece which is connected to the second pole tip layer in the pole tip region and connected to a first pole piece layer in a back gap region. In a preferred embodiment the write gap layer extends throughout the yoke region and provides the only insulation between the first pole piece layer and the coil layer. Further, it is preferred that the write coil insulation layer be an inorganic material such as silicon dioxide (SiO ). Several embodiments of the write head are provided along with novel methods of making.

6379570, Apr 30, 2002

Nov 29, 1999

09/450092

Richard Hsiao - San Jose CA
Carol Yoshiko Inouye - San Jose CA
Li-Chung Lee - Saratoga CA

International Business Machines Corporation - Armonk NY

B44C 122

216 22, 216 41, 216 49, 2960301, 2960318, 2041921

A method is provided for making a well-defined, highly-predictable chevron type MR sensor for a read head. A first material is selected for a first gap layer. A selected second material is deposited on the first gap layer followed by a resist frame that has elongated openings exposing elongated top portions of the first gap layer that extend at an acute angle to a head surface of the read head. A selected reactive ion etch (RIE) is employed to etch away the exposed portions of the second material layer down to the first material of the first gap layer. The material of the second material layer is chosen to be etched by the RIE while the material of the first gap layer is chosen not to be etched by the RIE. An example is Al O for the first gap layer, SiO for the second material layer and a RIE that is fluorine based. The resist frame is removed leaving elongated strips of the second material layer extending at the aforementioned angle to the head surface.

6416935, Jul 9, 2002

Aug 7, 2000

09/632860

Yiping Hsiao - San Jose CA
Cherngye Hwang - San Jose CA
Ciaran A. Fox - Sunnyvale CA
Richard Hsiao - San Jose CA

International Business Machines Corporation - Armonk NY

G03F 700

430320, 360122

The invention relates to a method for producing magnetic sliders having a permanent protective coating of carbon over the air bearing surface. The method comprises the steps of: (a) depositing a protective coating on a surface of the slider, the protective coating comprising an underlayer of carbon and a top layer selected from silicon and titanium; (b) depositing a photoresist layer onto the protective coating; (c) imagewise exposing the photoresist layer to radiation; (d) developing the image in the photoresist layer to expose the protective coating; (e) transferring the image through the protective layer and into the slider to form the air bearing pattern in the slider; and (f) removing the top layer of the protective coating.

6470566, Oct 29, 2002

Jan 3, 2001

09/754139

Richard Hsiao - San Jose CA
Edward Hin Pong Lee - San Jose CA
Timothy J. Moran - San Jose CA
Joseph Francis Smyth - Aptos CA
Howard Gordon Zolla - San Jose CA

International Business Machines Corporation - Armonk NY

G11B 5127

2960313, 2960307, 360323

To protect the MR read head element from ESD damage during wafer level manufacturing, a lead from the MR element is electrically connected to one or both of the read head element shields during manufacturing. In a preferred embodiment of the present invention, the electrical connection is fabricated in the kerf area between adjacent magnetic heads as they are fabricated upon a wafer substrate. Thereafter, when the magnetic heads are separated by saw cutting through the kerf areas, the electrical connections are thereby removed, such that the MR element electrical leads and the shields are electrically isolated. In an alternative embodiment, one or more of the shields, as well as the MR element leads can also be electrically connected to the substrate upon which the magnetic head is fabricated. In further alternative embodiments, the electrical connection between one or more of the shields and the MR element electrical lead can be fabricated within the magnetic head area, rather than in the kerf area, and a suitable resistance is fabricated into the interconnecting circuit. In this embodiment, the electrical interconnection between the MR element electrical lead and one or more of the shields has a pre-designed electrical resistance and it remains in the magnetic head following fabrication.

6477011, Nov 5, 2002

Aug 24, 1998

09/138770

Richard Hsiao - San Jose CA
Son Van Nguyen - Los Gatos CA
Andrew Chiuyan Ting - San Jose CA
John David Westwood - San Jose CA

International Business Machines Corporation - Armonk NY

G11B 560

3602351

The invention relates to a magnetic recording device comprising (a) a disk comprising a substrate, a metallic magnetic layer, a carbon layer and a lubricant layer; (b) a motor associated with a disk operable for rotating the disk; (c) a head supported on an air bearing slider for magnetically reading data to or magnetically writing data from the magnetic layer on the disk, the trailing surface of the slider coated with a multilayered film having low surface energy; and (d) an actuator connected to the slider for moving the head across the disk. The multilayered film on the trailing surface of the slider substantially reduces stiction of the slider.

6503406, Jan 7, 2003

Aug 7, 2000

09/633500

Yiping Hsiao - San Jose CA
Cherngye Hwang - San Jose CA
Ciaran A. Fox - Sunnyvale CA
Richard Hsiao - San Jose CA

International Business Machines Corporation - Armonk NY

G11B 5127

216 22, 216 41, 216 49, 216 51, 216 67, 216 81, 2960315, 430961

The invention relates to a method for producing magnetic sliders having a permanent protective coating of carbon over the air bearing surface. The method comprises the steps of: (a) depositing a temporary protective coating on a surface of the slider, the temporary protective coating comprising a layer carbon; (b) depositing a photoresist layer onto the temporary protective coating; (c) imagewise exposing the photoresist layer to radiation; (d) developing the image in the photoresist layer to expose the temporary protective coating; (e) transferring the image through the temporary protective coating and into the slider to form the air bearing pattern in the slider; (f) removing the temporary protective coating using nonreactive plasma; and (g) depositing a permanent protective coating comprising a layer of carbon.