Robert Koon Kit Li

US Patent:

6385007, May 7, 2002

Filed:

Aug 29, 2000

Appl. No.:

09/652227

Inventors:

Robert Yuan-Shih Li - Fremont CA

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11B 3314

US Classification:

360 9702, 360 69

Abstract:

A system to control the interior temperature and particularly the slider and disk temperature of hard disk drives that utilizes the spindle motor to spin a fanning structure. The fanning structure is preferably integrated into the hard disk drive and initiates a cooling air stream that is directed within the contained interior of the hard disk drive toward a Peltier-element that drains the thermal energy into the surrounding environment. In an alternate embodiment, the fanning structure initiates an exterior air stream that provides a cooling air stream at the outside of the Peltier-element. The Peltier-element is controllable to decouple operational temperature variations from environmental temperature variations.

US Patent:

6401214, Jun 4, 2002

Filed:

Mar 4, 1999

Appl. No.:

09/262426

Inventors:

Robert Yuan-Shih Li - Fremont CA

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1100

US Classification:

714 6, 711112

Abstract:

A method in a data processing system for minimizing read/write errors caused by impaired performance of a hard disk drive during runtime operation of the hard disk drive. The runtime operation includes an active mode during which read/write operations are conducted and a standby mode which occurs while no read/write operation is underway. First, at least one performance parameter of a hard disk drive is monitored during a standby mode of operation. Next, in response to detecting a degraded value of the at least one performance parameter, performing preventive recovery action only during the standby mode of operation, such that the performance parameter is restored to an acceptable value without interfering with hard disk drive operation during an active mode.

US Patent:

6410664, Jun 25, 2002

Filed:

Jan 15, 1998

Appl. No.:

09/007443

Inventors:

Donald Albert Bansleben - Columbia MD
Stefan K. Friedrich - San Gabriel CA
Todd Ross Younkin - Pasadena CA
Robert Howard Grubbs - South Pasadena CA
Chunming Wang - Highland Park NJ
Robert Tan Li - Longview TX

Assignee:

Cryovac, Inc. - Duncan SC

International Classification:

C08F 4602

US Classification:

526141, 526161, 5261691, 526172, 526147, 526 91, 526129, 526139, 526140, 526142, 526145, 526146, 526281

Abstract:

The present invention is directed to processes of polymerization of olefins and copolymerization of olefins and functionalized olefins in the presence of certain late transition metal bidentate salicylaldimine chelates represented by the formula: wherein each of the symbols R, R , R , R , R , R , R , L, M, A, X and z are defined within the specification herein below.

US Patent:

6421193, Jul 16, 2002

Filed:

Jan 26, 1999

Appl. No.:

09/237398

Inventors:

Robert Yuan-Shih Li - Fremont CA

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11B 502

US Classification:

360 25, 360 53

Abstract:

A method and apparatus for compensating for multiple thermal asperity events in a sector. The present invention provides for the detection, recording and recovery from errors caused by multiple thermal asperities occurring in a single sector. The method includes detecting thermal asperity events in a sector, setting a flag indicating each occurrence of a thermal asperity event in the sector, maintaining a count of the detected thermal asperity events in the sector and recording a byte location for each of the detected thermal asperity events in the sector. The method further includes performing a data recovery procedure in response to the detected thermal asperity events. The data recovery procedure is performed using the flag settings and a location corresponding to the detected thermal asperity events. The data recovery procedure is performed using the count of the detected thermal asperity events. The setting of a flag includes setting a bit in a register.

US Patent:

6498693, Dec 24, 2002

Filed:

Aug 2, 1999

Appl. No.:

09/365429

Inventors:

Andrew Hoan Au - Palo Alto CA
Robert Li - Fremont CA

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11B 2736

US Classification:

360 31, 360 66, 360 75, 360 7702

Abstract:

Method and system aspects for calibrating an MR offset in an MR head are presented. A method aspect includes identifying an occurrence of a calibration condition to initiate an MR offset check, and performing the MR offset check to ensure an MR offset value has not changed beyond an acceptable tolerance in order to maintain proper servoing of the MR head. A system aspect includes a hard disk for storing data, a read/write MR head for reading and writing data to/from the hard disk, and a control unit. The control unit performs an MR offset calibration of an MR offset value for the read/write MR head in response to a calibration condition occurring in order to ensure maintenance of the MR offset value within an acceptable tolerance for proper servoing of the read/write MR head.

US Patent:

6573345, Jun 3, 2003

Filed:

Jan 15, 1998

Appl. No.:

09/007442

Inventors:

Donald Albert Bansleben - Columbia MD
Stefan K. Friedrich - San Gabriel CA
Todd Ross Younkin - Pasadena CA
Robert Howard Grubbs - South Pasadena CA
Chunming Wang - Highland Park NJ
Robert Tan Li - Longview TX

Assignee:

Cryovac, Inc. - Duncan SC

International Classification:

C08F 464

US Classification:

526161, 526 91, 526 93, 5261231, 5261241, 526141, 526147, 5261691, 526171, 526172, 502117, 502155

Abstract:

The present invention is directed to processes of polymerizing olefin monomers and copolymerizing olefin monomer(s) with functionalized alpha-olefin monomers in the presence of certain late transition metal pyrrolaldimine chelates, especially bidenate or in the presence of a combination of a transition metal in its zero valence and a pyrrolaldimine represented by the formula: wherein each R , R , R , R , R , R , M and L are defined in the specification herein below.

US Patent:

6576779, Jun 10, 2003

Filed:

May 10, 2000

Appl. No.:

09/568132

Inventors:

Donald Albert Bansleben - Columbia MD
Stefan K. Friedrich - San Gabriel CA
Todd Ross Younkin - Pasadena CA
Robert Howard Grubbs - South Pasadena CA
Chunming Wang - Highland Park NJ
Robert Tan Li - Longview TX

Assignee:

Cryovac, Inc. - Duncan SC

International Classification:

C07F 710

US Classification:

556413, 564272, 564273, 564274

Abstract:

The present invention is directed to certain novel late transition metal salicylaldimine chelates and, further, to novel bidentate ligand compounds of substituted salicylaldimine, and their utility as polymerization catalysts alone or in combination with adjunct agent and/or Lewis base in processes of polymerizing olefin monomers and copolymerizing olefin monomers with functionalized olefin monomers.

US Patent:

6988308, Jan 24, 2006

Filed:

Jan 18, 2002

Appl. No.:

10/053734

Inventors:

Christopher William Bergevin - San Jose CA, US
Carol Inouye Chiu - San Jose CA, US
Robert Yuan-Shih Li - Fremont CA, US
Albert Shou-Chi Su - San Jose CA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11B 5/127
H04R 31/00

US Classification:

2960303, 29417, 2960308, 2960314, 2960315, 2960316, 2960318, 216 65, 3603241, 36032411, 36032412, 3603242, 360317, 427127, 427128, 451 4, 451 51

Abstract:

Hard biasing of a magnetoresistive sensor or a spin valve sensor in a magnetic read head is initialized by repeatedly applying a magnetic field to the hard biasing at any level of fabrication of the magnetic read head or any combination of levels of fabrication of the read head such as at the wafer level, row bar level, single slider level, head gimbal assembly (HGA) level and/or head stack assembly (HSA) level.