Inventor

Kroum S. Stoev

Inventor

Pleasanton, CA, US

Overview

2004–2020

Patent span

Physics

Primary field (CPC G)

Patents· 56 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Bprimary

G11BInformation storage based on relative movement between record carrier and transducer58%

G11CStatic stores19%

G06FElectric digital data processing10%

Y10TTechnical subjects covered by former us classification7%

H05KPrinted circuits3%

B24BMachines, devices, or processes for grinding or polishing1%

B82YSpecific uses or applications of nanostructures1%

H03MCoding1%

PatentTitleYear

10,552,259Recovery combining hard decoding, soft decoding and artificial codeword generation2020 10,338,841Block management for data streams2019 10,223,022System and method for implementing super word line zones in a memory device2019 10,109,352Data retention flags in solid-state drives2018 10,032,488System and method of managing data in a non-volatile memory having a staging sub-drive2018 10,021,777Temperature-based data refreshing2018 9,672,934'Temperature compensation management in solid-state memory'2017 9,668,337'Temperature management in data storage devices'2017 9,620,220'Data retention flags in solid-state drives'2017 9,595,347'Data retention monitoring using temperature history in solid state drives'2017 9,563,397'Disk drive using non-volatile cache when garbage collecting log structured writes'2017 9,275,741'Temperature compensation management in solid-state memory'2016 9,263,136'Data retention flags in solid-state drives'2016 9,165,668'Data retention monitoring using temperature history in solid state drives'2015 9,013,920'Systems and methods of write precompensation to extend life of a solid-state memory'2015 9,007,841'Programming scheme for improved voltage distribution in solid-state memory'2015 8,854,929'Disk drive calibrating laser power and write current for heat assisted magnetic recording'2014 8,773,957'Disk drive destabilizing magnetization of test pattern using head laser to enhance defect detection'2014 8,537,495'Magnetic writer having a split yoke'2013 8,537,494'PMR head with an angled stitch layer'2013 8,472,288'Recording head with near field transducer having non-rectangular pin cross section'2013 8,462,592'Energy-assisted magnetic recording head having waveguide capable of providing small beam spots'2013 8,373,945'Magnetic writer having a split yoke'2013 8,351,307'Trailing edge optimized near field transducer having non-rectangular pin cross section'2013 8,320,219'Trailing edge optimized near field transducer'2012 8,310,901'Method and system for providing separate write and optical modules in an energy assisted magnetic recording disk drive'2012 8,164,855'Method and system for providing a write pole in an energy assisted magnetic recording disk drive'2012 7,869,160'Perpendicular recording head with shaped pole surfaces for higher linear data densities'2011 7,729,086'Perpendicular magnetic recording head with dynamic flying height heating element disposed below turns of a write coil'2010 7,729,087'Magnetic recording head with resistive heating element located near the write coil'2010 7,688,546'Perpendicular magnetic recording head having nonmagnetic insertion layers'2010 7,660,080'Read/write head with dynamic flying height control by magnetostriction'2010 7,554,767'Electrical lapping guide disposed laterally relative to a shield pedestal'2009 7,542,246'Transducer with pole tip protrusion compensation layer'2009 7,522,379'Write element with recessed pole and heat sink layer for ultra-high density writing'2009 7,443,632'Magnetic head with stitched top pole layer and single layer coil or solenoidal coil'2008 7,430,098'Perpendicular magnetic recording head with dynamic flying height heating element'2008 7,428,124'Magnetic recording head with resistive heating element and thermal barrier layer'2008 7,375,926'Inductive writer design using a soft magnetic pedestal having a high magnetic saturation layer'2008 7,372,665'Magnetic recording head with resistive heating element located near the write coil'2008 7,337,530'Method for manufacturing a shielded pole magnetic head for perpendicular recording'2008 7,310,204'Inductive writer design for using a soft magnetic pedestal having a high magnetic saturation layer'2007 7,292,409'Magnetic head with thin trailing pedestal layer'2007 7,283,327'Magnetic write head having resistive heater coil'2007 7,248,433'Magnetic head with stitched top pole layer and single layer coil or solenoidal coil'2007 7,212,384'Magnetic read head with recessed hard bias and current leads'2007 7,193,815'Shielded pole magnetic head for perpendicular recording'2007 7,126,788'Trailing edge recording magnetic head with reversed double bias coil and deflection pole for perpendicular recording with a non-perpendicular write field'2006 7,126,790'Magnetic head for perpendicular recording with magnetic loop providing non-perpendicular write field'2006 7,113,366'Double-nosed inductive transducer with reduced off-track writing'2006 7,092,195'Method of using a magnetic write head having an internal heater'2006 6,989,972'Magnetoresistive sensor with overlapping leads having distributed current'2006 6,912,106'Writer with a hot seed zero throat and substantially flat top pole'2005 6,906,894'Write head having a recessed, magnetic adjunct pole formed atop a main pole, and method of making the same'2005 6,791,793'Perpendicular recording write head having a recessed magnetic adjunct pole and method of making the same'2004 6,724,572'Inductive transducer with recessed leading pole layer'2004

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2004–2007Patents assigned to WESTERN DIGITAL FREMONT INC (11)· patent assignee history

2004–2010Based in Fremont, CA, US· patent location history

2006–2020Based in Pleasanton, CA, US· patent location history

2007–2013Patents assigned to WESTERN DIGITAL FREMONT LLC (26)· patent assignee history

2012–2017Patents assigned to STOEV KROUM S (8)· patent assignee history

2012–2017Patents assigned to CHAMPION ERIC J (4)· patent assignee history

2014–2020Patents assigned to WESTERN DIGITAL TECH INC (17)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
WESTERN DIGITAL FREMONT LLC	26	2007–2013
WESTERN DIGITAL TECH INC	17	2014–2020
WESTERN DIGITAL FREMONT INC	11	2004–2007
STOEV KROUM Sself	8	2012–2017
CHAMPION ERIC J	4	2012–2017

Locations

Location	Patents	Span
Pleasanton, California, US	42	2006–2020
Fremont, California, US	14	2004–2010