Resumes
Resumes
Venkat Koka Phones & Addresses
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112 Durlington Ct, San Ramon, CA 94582 (925) 230-8627
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6816 Corte De Flores, Pleasanton, CA 94566 (952) 393-3076
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2768 Camino Casa Buena, Pleasanton, CA 94566 (925) 461-3129
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Tracy, CA
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17268 Acorn Rdg, Eden Prairie, MN 55347
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500 Rolls Rd, Saint Paul, MN 55112
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New Brighton, MN
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Rochester, MN
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Fort Pierce, FL
Publications
Us Patents
Ramp Assemblies To Load/Unload Heads At The Inner Diameter Of Disk Drives
View pageUS Patent:
20030011937, Jan 16, 2003
Filed:
Jun 20, 2001
Appl. No.:
09/886792
Inventors:
Wuxing Gan - Fremont CA, US
Venkat Koka - Pleasanton CA, US
Venkat Koka - Pleasanton CA, US
International Classification:
G11B005/54
US Classification:
360/254700
Abstract:
A ramp assembly for loading and unloading of one or more sliders at the inner diameter of a disk drive. The disk drive has a base casting and one or more disk surfaces. The ramp assembly includes one or more projecting members, each projecting member including a disk-facing surface, a ramp which itself includes an inclined surface, a base member, which fastens to the base casting of the disk drive, and an upright member which connects the projecting member to the base member. A second embodiment is a double-sided ramp assembly including an upper projecting member and a lower projecting member, having two disk-facing surfaces and two ramps, each of which includes an inclined plane, a second upright member, a horizontal support member, and a connecting upright. A third embodiment uses multiple stories, where each double-sided ramp assembly is considered one story.
Slider With Protective Dlc Or Nonhygroscopic Coating On The Trailing Edge Face
View pageUS Patent:
57813779, Jul 14, 1998
Filed:
Jul 2, 1996
Appl. No.:
8/675377
Inventors:
Venkat R. Koka - Vadnais Heights MN
Ramesh Sundaram - Eden Prairie MN
Ramesh Sundaram - Eden Prairie MN
Assignee:
Seagate Technology, Inc. - Scotts Valley CA
International Classification:
G11B 560
G11B 5187
G11B 2121
G11B 5187
G11B 2121
US Classification:
360103
Abstract:
An improved magnetic head slider is disclosed. The slider includes an air bearing surface and a trailing edge face. A magnetic transducer located at the trailing edge face end of the slider is encapsulated in alumina. A coating of non-hygroscopic material covers at least portions of the alumina to form at least portions of the trailing edge face.
Method Of Applying Lubricant To Magnetic Disc
View pageUS Patent:
58209450, Oct 13, 1998
Filed:
Apr 1, 1997
Appl. No.:
8/831050
Inventors:
Bo Wei - Santa Clara CA
Dallas W. Meyer - Burnsville MN
Venkat R. Koka - Vadnais Heights MN
Dallas W. Meyer - Burnsville MN
Venkat R. Koka - Vadnais Heights MN
Assignee:
Seagate Technology, Inc. - Scotts Valley CA
International Classification:
B05D 300
US Classification:
427555
Abstract:
A magnetic disc for a computer disc drive has distinct zones of differing lubricant thickness. A bonded+mobile zone covers a portion of the disc which preferably coincides with the landing zone. A zone of different lubricant thickness, such as lubricant-free, bonded-only or mostly-bonded, covers a different portion of the disc such as over the data zone. After a uniform layer of lubricant is coated over the disc surface, lubricant can be removed from distinct zones by solvent removal over a periphery of the disc and by removal by laser. The lubricant removal from distinct zones can occur either before or after bonding. Multiple lubricant thickness zones may be used, and the lubricant thickness profile over the entire disc can be controlled as desired.
Magnetic Disc With Zoned Lubricant Thickness
View pageUS Patent:
56509006, Jul 22, 1997
Filed:
Jul 12, 1996
Appl. No.:
8/680591
Inventors:
Bo Wei - Santa Clara CA
Dallas W. Meyer - Burnsville MN
Venkat R. Koka - Vadnais Heights MN
Dallas W. Meyer - Burnsville MN
Venkat R. Koka - Vadnais Heights MN
Assignee:
Seagate Technology, Inc. - Scotts Valley CA
International Classification:
G11B 572
US Classification:
360135
Abstract:
A magnetic disc for a computer disc drive has distinct zones of differing lubricant thickness. A bonded+mobile zone covers a portion of the disc which preferably coincides with the landing zone. A zone of different lubricant thickness, such as lubricant-free, bonded-only or mostly-bonded, covers a different portion of the disc such as over the data zone. After a uniform layer of lubricant is coated over the disc surface, lubricant can be removed from distinct zones by solvent removal over a periphery of the disc and by removal by laser. The lubricant removal from distinct zones can occur either before or after bonding. Multiple lubricant thickness zones may be used, and the lubricant thickness profile over the entire disc can be controlled as desired.
Moveable Disk Wiper Apparatus And Method
View pageUS Patent:
61885452, Feb 13, 2001
Filed:
Jul 23, 1999
Appl. No.:
9/360489
Inventors:
Long Nguyen - San Jose CA
Venkat R. Koka - Pleasanton CA
Frank Morris - San Jose CA
Syed Iftikar - Pleasanton CA
Venkat R. Koka - Pleasanton CA
Frank Morris - San Jose CA
Syed Iftikar - Pleasanton CA
Assignee:
Castlewood Systems, Inc. - Pleasanton CA
International Classification:
G11B 358
G11B 3314
G11B 3314
US Classification:
360128
Abstract:
Methods and apparatus for increasing the reliability of removable storage media by dynamically reducing particulate contaminants from magnetic disks. The apparatus and methods include using wipers which slidingly engage both sides of the magnetic disk as the disk rotates, in order to reduce particulates. In some embodiments, the wiper can be coupled to a swing-type actuator or to any resilient member which can be moved over the surface of the magnetic disk.