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Darren Todd Imai

from Los Gatos, CA
Age ~64
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Also known as:
Darren T Imai, Darren Tr Imai, Mai Di
Phone and address:
15065 Blossom Hill Rd, Los Gatos, CA 95032
(408) 356-6586
Related to:
Shawna Dicanio, 32John E LeachBruce B Imai, 62Marsha A Chenoweth, 47Amy Imai, 93Shawn E Imai, 63Susan K Imai, 62Patricia J Leach, 88Robert N ImaiAlyssa A Imai, 32Charles E Leach, 92Minnie O LeachMichelle A Imai, 36Lain Imai MooiRobert J Imai, 66Robert ImaiLorene L Morris, 65
Connected to:
Jackie K Imai, 46Natasha S Imai, 41Noriko Imai, 70Yuta ImaiAlyssa Imaizumi, 39Atsushi Imaizumi, 66Afrim Imami, 82Holly B Imamovic, 53Kenan F Imamovic, 46Hideko L Imamura, 86

Darren Imai Phones & Addresses

  • 15065 Blossom Hill Rd, Los Gatos, CA 95032 (408) 356-6586
  • 211 Ada Ave, Mountain View, CA 94043 (650) 960-4094
  • South Lake Tahoe, CA
  • Santa Clara, CA
  • El Dorado, CA

Business Records

Name / Title
Company / Classification
Phones & Addresses
Darren Todd Imai
President
KUMAKO, INC
Eating Place
211 Jackson St, San Jose, CA 95112
283 Washington Ave, Albany, NY 12206

Publications

Us Patents

Planar Magnetic Ring Head For Contact Recording With A Rigid Disk

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US Patent:
6493191, Dec 10, 2002
Filed:
Sep 15, 1995
Appl. No.:
08/528890
Inventors:
William C. Cain - San Jose CA
Richard D. Anderson - Sunnyvale CA
Michael A. Baldwinson - Cupertino CA
Keith R. Berding - San Jose CA
Michael E. Devillier - San Jose CA
Garrett A. Garrettson - Los Altos Hills CA
Randolph S. Gluck - San Jose CA
Harold J. Hamilton - Santa Clara CA
Robert D. Hempstead - Los Gatos CA
Darren T. Imai - Los Gatos CA
Kwang K. Kim - Saratoga CA
Dimitre A. Latev - San Jose CA
Alexander P. Payne - Ben Lomond CA
David D. Roberts - Santa Cruz CA
Assignee:
Censtor Corporation - Los Gatos CA
International Classification:
G11B 5187
US Classification:
3602462, 3602461
Abstract:
A transducer for a hard disk drive system has a planar magnetic core and a pair of poletips that project transversely from the core for sliding contact with the disk during reading and writing. The transducer is formed entirely of thin films in the shape of a low profile table having three legs that slide on the disk, the poletips being exposed at a bottom of one of the legs for high resolution communication with the disk, the throat height of the poletips affording sufficient tolerance to allow for wear. The legs elevate the transducer from the disk sufficiently to minimize lifting by a thin air layer that moves with the spinning disk which, in combination with the small size of the thin film head allows a low load and a flexible beam and gimbal to hold the transducer to the disk. The transducer includes a loop shaped core of magnetic material that ends at the poletips, the core extending further parallel than perpendicular to the disk surface and preferably being formed of a plurality of slightly spaced ribbons of magnetic material in order to increase high frequency permeance. A high magnetic saturation layer may be formed adjoining the gap in at least the trailing poletip, in order to avoid saturation at the poletips during writing.

Contact Planar Magnetoresistive Head

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US Patent:
6535361, Mar 18, 2003
Filed:
Feb 28, 2001
Appl. No.:
09/795954
Inventors:
William C. Cain - San Jose CA
Michael E. Devillier - San Jose CA
Harold J. Hamilton - Santa Clara CA
Robert D. Hempstead - Los Gatos CA
Darren T. Imai - Los Gatos CA
Dimitre A. Latev - San Jose CA
Assignee:
Censtor Corp. - Los Gatos CA
International Classification:
G11B 539
US Classification:
3603181
Abstract:
A hard disk drive head operates in close proximity and dynamic contact with a rapidly spinning rigid disk surface, the head including a transducer with a magnetically permeable path between a poletip disposed adjacent to the disk surface and a magnetoresistive (MR) sensor situated outside the range of thermal noise generated by the surface contact. The magnetically permeable path is the same as that used to write data to the disk, eliminating errors that occur in conventional transducers having MR sensors at a separate location from the writing poletips. Moreover, the magnetically permeable path is preferably formed in a low profile, highly efficient âplanarâ loop that allows for manufacturing tolerances in throat height and wear of the terminal poletips from disk contact without poletip saturation or poletip smearing. The MR layer is formed in one of the first manufacturing steps atop the substrate, so that the MR layer has a relatively uniform planar template that is free from contaminants. A preferred embodiment has a laminated yoke for improved high frequency efficiency, with the MR element situated between the yoke lamina for improved sensitivity.

Hard Disk Drive For Perpendicular Recording With Transducer Having Submicron Gap Between Pole Tips

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US Patent:
7095585, Aug 22, 2006
Filed:
Oct 20, 2004
Appl. No.:
10/970782
Inventors:
Alexander P. Payne - Ben Lomond CA, US
William C. Cain - Foothill Ranch CA, US
Michael E. Devillier - San Jose CA, US
Harold J. Hamilton - Santa Clara CA, US
Robert D. Hempstead - Los Gatos CA, US
Darren T. Imai - Los Gatos CA, US
Dimitre A. Latev - San Jose CA, US
David D. Roberts - Fremont CA, US
Assignee:
Seagate Technology LLC - Scotts Valley CA
International Classification:
G11B 5/147
G11B 5/235
US Classification:
360125, 360120
Abstract:
An information storage system includes a transducer having a loop of ferromagnetic material with pole tips separated by an nonferromagnetic gap located adjacent to a medium such as a rigid disk. During writing the separation between the pole tips and the media layer of the disk is a small fraction of the gap separation. Due to the small separation between the pole tips and the media layer, the magnetic field generated by the transducer and felt by the media has a larger perpendicular than longitudinal component, favoring perpendicular recording over longitudinal recording. The media may have an easy axis of magnetization oriented substantially along the perpendicular direction, so that perpendicular data storage is energetically favored. The transducer may also include a magnetoresistive sensor for reading magnetic information from the disk.

Device With Protective Layer

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US Patent:
8389084, Mar 5, 2013
Filed:
Feb 27, 2009
Appl. No.:
12/395510
Inventors:
Regan Nayve - San Jose CA, US
Darren T. Imai - Los Gatos CA, US
Alex F. Fong - San Jose CA, US
Assignee:
FUJIFILM Corporation - Tokyo
International Classification:
B32B 1/00
B32B 1/02
B32B 15/04
B32B 15/08
B32B 15/092
H02K 41/02
US Classification:
428 357, 428 358, 428 341, 310 1203
Abstract:
A fluid impermeable protective layer is described for a structure that has a 3-dimensional profile. The 3-dimensional profile can include actuators. The protective layer is applied so that there are no breaches in the protective layer and so that the protective layer is not too thick to prevent the actuators from being able to properly function.

Hard Disk Drive For Perpendicular Recording With Transducer Having Submicron Gap Between Pole Tips

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US Patent:
20020093761, Jul 18, 2002
Filed:
Nov 19, 2001
Appl. No.:
10/006453
Inventors:
Alexander Payne - Ben Lomond CA, US
William Cain - Foothill Ranch CA, US
Michael Devillier - San Jose CA, US
Harold Hamilton - Santa Clara CA, US
Robert Hempstead - Los Gatos CA, US
Darren Imai - Los Gatos CA, US
Dimitre Latev - San Jose CA, US
David Roberts - Fremont CA, US
International Classification:
G11B005/127
US Classification:
360/125000
Abstract:
An information storage system includes a transducer having a loop of ferromagnetic material with pole tips separated by an nonferromagnetic gap located adjacent to a medium such as a rigid disk. During writing the separation between the pole tips and the media layer of the disk is a small fraction of the gap separation. Due to the small separation between the pole tips and the media layer, the magnetic field generated by the transducer and felt by the media has a larger perpendicular than longitudinal component, favoring perpendicular recording over longitudinal recording. The media may have an easy axis of magnetization oriented substantially along the perpendicular direction, so that perpendicular data storage is energetically favored. The transducer may also include a magnetoresistive sensor for reading magnetic information from the disk.

Sensor For A Magnetic Memory Device And Method Of Manufacturing The Same

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US Patent:
20090137066, May 28, 2009
Filed:
Nov 7, 2008
Appl. No.:
12/289952
Inventors:
Darren Imai - Los Gatos CA, US
Cynthia A. Kuper - Villanova PA, US
International Classification:
H01L 21/00
US Classification:
438 3, 257E21001
Abstract:
The invention encompasses fabrication methods including the steps of preparing a silicon substrate, forming an amorphous III-V material layer on the silicon substrate, heating the amorphous III-V material layer, and epitaxially growing III-V material on the amorphous III-V material layer.

Magnetic Memory Device Having A C-Shaped Structure And Method Of Manufacturing The Same

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US Patent:
20090146231, Jun 11, 2009
Filed:
Nov 7, 2008
Appl. No.:
12/289951
Inventors:
Cynthia A. Kuper - Villanova PA, US
Darren Imai - Los Gatos CA, US
International Classification:
H01L 29/82
H01L 21/00
US Classification:
257421, 438 3, 257E21001, 257E29323
Abstract:
A non-volatile magnetic memory device having one or more memory cells, each of the memory cells includes a magnetic switch including a C-shaped magnetic component and a write coil located proximate the magnetic component, the write coil coupled to receive a current sufficient to create a remnant magnetic polarity in the magnetic component, and a Hall sensor, positioned proximate the magnetic component, to detect the remnant magnetic polarity indicative of a stored data bit.

Insulated Film Use In A Mems Device

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US Patent:
20110115341, May 19, 2011
Filed:
May 21, 2009
Appl. No.:
12/992246
Inventors:
Jeffrey Birkmeyer - San Jose CA, US
Darren T. Imai - Los Gatos CA, US
Andreas Bibl - Los Altos CA, US
Zhenfang Chen - Sunnyvale CA, US
International Classification:
H01L 41/047
H01L 41/22
US Classification:
310364, 29 2535
Abstract:
A method of forming an actuator and an actuable device formed by this method are disclosed. This method includes depositing a photoimageable material to form a first photoimageable layer on a piezoelectric layer; patterning the first photoimageable layer to form an aperture; and disposing a first conductive layer on the first photoimageable layer. The first conductive layer partially overlies the first photoimageable layer such that a first portion of the first conductive layer contacts the first photoimageable layer and a second portion of the first conductive layer electrically contacts the piezoelectric layer in the aperture.
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Darren Todd Imai from Los Gatos, CA, age ~64 Get Report