International Business Machines Corporation

Headway Technologies, Incorporated

Other

Hewlett-packard Development Company, L.P.

Henry C Chang

Robert Otto Schwenker

Cheng Tzong Horng

Kochan Ju

Cherngye Hwang

Mao-Min Chen

Jei-Wei Chang

Si-Tuan Lam

Wensen Li

Liang-Jie Zhang

Xuehua Wu

Jun-Jang Jeng

Tian-Jy Chao

Jen-Yao Chung

David B Flaxer

Rama Kalyani Tirumala Akkiraju

Qun Zhou

Xue Hua Wu

Pooja Yadav

An automated software re-testing system for efficiently validating proper operation according to a specification. Regression tests are automatically created in an object-oriented system. The inheritance hierarchy of the system is used to determine which system classes should be tested. Regression test class destructors are used to test dependent classes. Unchanged system classes, and those dependent entirely on unchanged system classes need not be tested and time and effort are saved by skipping their re-testing.

Efficient re-validation of modified software

A method (and structure) of querying one or more Web-based data sources, includes receiving a query statement including at least one query, parsing the input query to identify a target data source for each query, and dispatching each query to a respective one of the data sources for a target data source search. The query statement further includes an aggregate operator defining at least one logical operation to be performed on a result returned from the target data source searches.

Method and structure for federated web service discovery search over multiple registries with result aggregation

Write head coils for magnetic disk systems are commonly formed through electroplating onto a seed layer in the presence of a photoresist mask. It is then necessary to remove the seed layer everywhere except under the coil itself. The present invention achieves this through etching in a solution of ammonium persulfate to which has been added the complexing agent 1,4,8,11 tetraazundecane. This suppresses the reduction of Cu to Cu, thereby increasing the dissolution rate of copper while decreasing that of nickel-iron. Two ways of implementing this are described&mdash;adding the complexing agent directly to the ammonium persulfate and introducing the 1,4,8,11 tetraazundecane through a dipping process that precedes conventional etching in the ammonium persulfate.

Etching process to selectively remove copper plating seed layer

A read track width defining layer is employed for defining first and second side edges of a read sensor. The read track width defining layer preferably remains in the head to planarize the read head at first and second hard bias and lead layers so as to overcome a problem of write gap curvature in an accompanying write head. The read track width defining layer is defined by a subtractive process about a bilayer photoresist layer. The subtractive process is selective to the read track width defining layer over a read sensor material layer therebelow. Ion milling is then employed for defining first and second side edges of a read sensor layer employing the read track width defining layer as a mask. First and second hard bias and lead layers are then deposited which make contiguous junctions with the first and second side edges of each of the read sensor and read track width defining layers. The photoresist is then removed and the remainder of the read head is completed.

Read head with read track width defining layer that planarizes the write gap layer of a write head

A method of making a magnetic head that has a read head with a track width includes the steps of depositing a read track width defining material layer on a read sensor material layer; forming a bi-layer photoresist mask on the read track width defining material layer that masks a read track width defining layer portion of the read track width defining material layer; removing by reactive ion etching (RIE) a portion of the read track width defining material layer not masked by the photoresist mask to form the read track width defining layer portion with exposed first and second side edges that are spaced apart a distance equal to the track width; removing by ion milling a first portion of the read sensor material layer not masked by the read track width defining layer portion to form a second portion of the read sensor material layer with exposed first and second side edges that have a width equal to the track width; depositing hard bias and lead material layers on the photoresist mask in contact with the first and second side edges of each of the second portion of the read sensor material layer and the read track width defining layer portion; and removing the photoresist mask, thereby lifting off a portion of the hard bias and lead material layers leaving first and second hard bias and lead layers connected to the first and second side edges of each of the second portion of the read sensor material layer and the read track width defining layer portion.

Method of manufacturing a magnetic head including a read head with read track width defining layer that planarizes the write gap layer of a write head

A method for making a magnetic head slider having a protective coating on the rails thereof, the protective coating containing a thin adhesion layer, a thin layer of amorphous hydrogenated carbon, and a thin masking layer. The protective coating is deposited on the air bearing surface of the slider after the thin film magnetic heads are lapped to a chosen dimension, but before the pattern of rails is produced on the air bearing surface. The protective coating protects the magnetic head during the rail fabrication process and in usage in a magnetic recording system protects the magnetic head from wear and corrosion damage.

Method for making a thin film magnetic head having a protective coating

A magnetic head slider having a protective coating on the rails thereof, the protective coating comprising a thin adhesion layer, a thin layer of amorphous hydrogenated carbon, and a thin masking layer. The protective coating is deposited on the air bearing surface of the slider after the thin film magnetic heads are lapped to a chosen dimension, but before the pattern of rails is produced on the air bearing surface. The protective coating protects the magnetic head during the rail fabrication process and in usage in a magnetic recording system protects the magnetic head from wear and corrosion damage.

Thin film magnetic head having a protective coating and method for

A back rest is movably supported on a wall behind a toilet in a manner whereby in one position the back rest is above the toilet and free therefrom and rests against the wall and in another position the back rest is over the raised toilet lid in juxtaposition therewith and supports the back of a user of the toilet.

Growing community of inventors

San Jose, CA, United States of America

Henry C Chang