John C. Purkett

Person

Longmont, CO, US

People

Patents Grantslast 30 patents

Information Patent Grant
Writable servo overlap zones
- Patent number 9,070,411
- Issue date Jun 30, 2015
- Seagate Technology LLC
- Timothy Ellis
- G11 - INFORMATION STORAGE
Information Patent Grant
Impedance mitigation of a microactuator conductive joint
- Patent number 8,891,200
- Issue date Nov 18, 2014
- Seagate Technology LLC
- John C. Purkett
- G11 - INFORMATION STORAGE
Information Patent Grant
Seam to seam embedded runout correction propagation
- Patent number 7,561,370
- Issue date Jul 14, 2009
- Seagate Technology LLC
- Thomas O. Melrose
- G11 - INFORMATION STORAGE
Information Patent Grant
Dynamic shock detection in disk drive using hair trigger timer
- Patent number 7,253,982
- Issue date Aug 7, 2007
- Maxtor Corporation
- Don Brunnett
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for reducing effective track width through hig...
- Patent number 7,193,807
- Issue date Mar 20, 2007
- Maxtor Corporation
- Bruce Liikanen
- G11 - INFORMATION STORAGE
Information Patent Grant
Dynamic shock detection in disk drive using accumulated average pos...
- Patent number 7,154,690
- Issue date Dec 26, 2006
- Maxtor Corporation
- Don Brunnett
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for determining embedded runout correction val...
- Patent number 7,106,542
- Issue date Sep 12, 2006
- Maxtor Corporation
- Yu Sun
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for automatically determining an embedded runo...
- Patent number 6,947,249
- Issue date Sep 20, 2005
- Maxtor Corporation
- Jim Hargarten
- G11 - INFORMATION STORAGE
Information Patent Grant
Dynamic off-track detector
- Patent number 6,882,489
- Issue date Apr 19, 2005
- Maxtor Corporation
- Don Brunnett
- G11 - INFORMATION STORAGE
Information Patent Grant
Transducer head with separate data and servo read elements
- Patent number 6,606,216
- Issue date Aug 12, 2003
- Maxtor Corporation
- Bruce A. Liikanen
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of correcting a read error in a disk drive
- Patent number 6,332,207
- Issue date Dec 18, 2001
- Maxtor Corporation
- Bobby Ray Southerland
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for servo positioning in a direct access stora...
- Patent number 6,219,197
- Issue date Apr 17, 2001
- International Business Machines Corporation
- Dana Henry Brown
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of correcting read errors in a data storage system using tar...
- Patent number 6,147,827
- Issue date Nov 14, 2000
- Maxtor Corporation
- Bobby Ray Southerland
- G11 - INFORMATION STORAGE
Information Patent Grant
System and method of encoding an index mark into a servo address
- Patent number 6,104,558
- Issue date Aug 15, 2000
- International Business Machines Corporation
- Richard Greenberg
- G11 - INFORMATION STORAGE
Information Patent Grant
Data recovery using targeted ECC correction
- Patent number 6,084,734
- Issue date Jul 4, 2000
- Maxtor Corporation
- Bobby Ray Southerland
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive zoned sequential data format and head switch sequence
- Patent number 6,034,837
- Issue date Mar 7, 2000
- International Business Machines Corporation
- John Charles Purkett
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive zoned sequential data format and head switch sequence
- Patent number 5,872,673
- Issue date Feb 16, 1999
- International Business Machines Corporation
- John Charles Purkett
- G11 - INFORMATION STORAGE
Information Patent Grant
Information storage device with an odd number of track sequences in...
- Patent number 5,760,993
- Issue date Jun 2, 1998
- International Business Machines Corporation
- John Charles Purkett
- G11 - INFORMATION STORAGE
Information Patent Grant
System and method for encoding a servo address
- Patent number 5,757,568
- Issue date May 26, 1998
- International Business Machines Corporation
- Richard Greenberg
- G11 - INFORMATION STORAGE
Information Patent Grant
Pulsed current velocity controlled head load method and apparatus w...
- Patent number 5,615,064
- Issue date Mar 25, 1997
- International Business Machines Corporation
- Timothy J. Blank
- G11 - INFORMATION STORAGE
Information Patent Grant
System and method for encoding a servo address
- Patent number 5,596,460
- Issue date Jan 21, 1997
- International Business Machines Corporation
- Richard Greenberg
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
SEAM TO SEAM EMBEDDED RUNOUT CORRECTION PROPAGATION
- Publication number 20090059420
- Publication date Mar 5, 2009
- Seagate Technology LLC
- THOMAS O. MELROSE
- G11 - INFORMATION STORAGE

John C. Purkett

Person

Patents Grantslast 30 patents

Writable servo overlap zones

Impedance mitigation of a microactuator conductive joint

Seam to seam embedded runout correction propagation

Dynamic shock detection in disk drive using hair trigger timer

Method and apparatus for reducing effective track width through hig...

Dynamic shock detection in disk drive using accumulated average pos...

Method and apparatus for determining embedded runout correction val...

Method and apparatus for automatically determining an embedded runo...

Dynamic off-track detector

Transducer head with separate data and servo read elements

Method of correcting a read error in a disk drive

Method and apparatus for servo positioning in a direct access stora...

Method of correcting read errors in a data storage system using tar...

System and method of encoding an index mark into a servo address

Data recovery using targeted ECC correction

Disk drive zoned sequential data format and head switch sequence

Disk drive zoned sequential data format and head switch sequence

Information storage device with an odd number of track sequences in...

System and method for encoding a servo address

Pulsed current velocity controlled head load method and apparatus w...

System and method for encoding a servo address

Patents Applicationslast 30 patents

SEAM TO SEAM EMBEDDED RUNOUT CORRECTION PROPAGATION