Inventor

Edward J. Yarmchuk

Inventor

Mahopac, NY, US

Overview

1984–2021

Patent span

Physics

Primary field (CPC G)

Patents· 65 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 transducer46%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1011%

G01NInvestigating or analysing materials by determining their chemical or physical properties8%

H01LSemiconductor devices8%

G01BMeasuring length, thickness or similar linear dimensions7%

G01RMeasuring electric variables5%

H05KPrinted circuits5%

Y10TTechnical subjects covered by former us classification4%

B41JTypewriters3%

C23CCoating metallic material1%

PatentTitleYear

10,908,110Using in situ capacitance measurements to monitor the stability of interface materials in complex PCB assemblies and other structures2021 10,338,024Using in situ capacitance measurements to monitor the stability of interface materials in complex PCB assemblies and other structures2019 10,141,236Flip chip ball grid array with low impedence and grounded lid2018 10,043,725Flip chip ball grid array with low impedence and grounded lid2018 9,786,572'Flip chip ball grid array with low impedance and grounded lid'2017 9,714,911'Using in situ capacitance measurements to monitor the stability of interface materials in complex PCB assemblies and other structures'2017 8,877,566'Curvilinear heat spreader/lid with improved heat dissipation'2014 8,589,102'Using in situ capacitance measurements to monitor the stability of interface materials in complex PCB assemblies and other structures'2013 8,269,340'Curvilinear heat spreader/lid with improved heat dissipation'2012 8,026,730'Process for measuring heat spreader tilt'2011 7,808,257'Ionization test for electrical verification'2010 7,764,069'Process for measuring bond-line thickness'2010 7,136,243'Method and apparatus for correcting for systematic errors in timing pattern generation'2006 6,898,035'Method and apparatus for correcting for systematic errors in timing pattern generation'2005 6,735,031'Method for storage of self-servowriting timing information'2004 6,687,069'Methods, apparatus and program products for determining off-track time shift estimates to be used in writing timing patterns on a storage medium'2004 6,654,196'Avoiding write to read interference during self-servowriting'2003 6,633,451'Self-servo-writing timing pattern generation with non-overlapping read and write elements'2003 6,611,395'Rotating media recording system with adaptive track density'2003 6,603,627'Creating an initial set of tracks in a self-servowriting system using a compliant crashstop to control head movement'2003 6,600,621'Techniques for multitrack positioning and controlling error growth in self-servowriting systems'2003 6,476,989'Radial self-propagation pattern generation for disk file servowriting'2002 6,469,859'Method and system for accurate self-servowriting with normalization in a disk drive'2002 6,430,001'Integrated data storage disk and disk drive'2002 6,411,453'Methods, apparatus and program products for determining off-track time shaft estimates to be used in writing timing patterns on a storage medium'2002 6,344,942'Method and apparatus for absolute track spacing determination for self-servowriting'2002 6,324,027'Method and apparatus for correcting for random errors in timing pattern generation'2001 6,307,697'Method and apparatus for correcting for systematic errors in timing pattern generation'2001 6,301,071'Methods and systems for self-servowriting including maintaining a reference level within a usable dynamic range'2001 6,259,574'Trigger pattern detection method and apparatus'2001 6,252,732'Method and apparatus for correcting systematic errors in timing pattern generation'2001 6,249,399'Methods and systems for self-servowriting including maintaining a reference level within a useable dynamic range'2001 6,242,923'Method for detecting power plane-to-power plane shorts and I/O net-to power plane shorts in modules and printed circuit boards'2001 6,215,606'Method and system for determining the widest recording head of a recording device'2001 6,141,093'Method and apparatus for locating power plane shorts using polarized light microscopy'2000 6,101,055'Trigger pattern detection method and apparatus'2000 6,101,063'Methods and systems for self-servowriting including maintaining a reference level within a usable dynamic range'2000 6,078,450'Method and apparatus for correcting for random errors in timing pattern generation'2000 6,075,668'Method and apparatus for correcting for random errors in timing pattern generation'2000 6,031,680'Methods and systems for self-servowriting including maintaining a reference level within a usable dynamic range'2000 6,005,738'Methods and systems for self-servo-writing including writing positioning and timing bursts at different track pitches'1999 5,991,115'Method and apparatus for determining separation between read and write elements of a transducer'1999 5,907,447'Radial self-propagation pattern generation for disk file servowriting'1999 5,901,003'Method and apparatus for determining systematic errors'1999 5,875,064'Method and system for accurate self-servowriting with normalization in a disk drive'1999 5,844,742'Radial self-propagation pattern generation for disk file servowriting'1998 5,821,759'Method and apparatus for detecting shorts in a multi-layer electronic package'1998 5,793,554'Self-servowriting system with dynamic error propagation reduction'1998 5,757,574'Methods and systems for self-servowriting including maintaining a reference level within a usable dynamic range'1998 5,659,436'Radial self propagation pattern generation for disk file servowriting'1997 5,648,720'Apparatus and method for producing a magnetic image of a conductive pattern using eddy currents'1997 5,615,058'Method and system for writing a servo-pattern on a storage medium'1997 5,612,833'Radial self-propagation pattern generation for disk file servowriting'1997 5,581,420'Method and system for determining a radial positioning valve used for writing tracks at a desired track pitch'1996 5,485,322'Method and system for writing a clock track on a storage medium'1996 5,469,051'Electrical defect detector for circuit lines'1995 5,434,504'Position sensors for linear motors including plural symmetrical fluxes generated by a planar drive coil and received by planar sense coils being colinear along an axis of motion'1995 5,130,660'Miniature electronic device aligner using capacitance techniques'1992 4,939,599'Method and apparatus for measuring dynamic track misregistration'1990 4,931,887'Capacitive measurement and control of the fly height of a recording slider'1990 4,739,342'Crossed-element magnetographic print head'1988 4,725,850'Electromagnetic head with separate addressability resolution and imaging resolution functions'1988 4,623,554'Method for controlling plating rate in an electroless plating system'1986 4,525,724'Magnetic recording head array for longitudinal magnetic printing with staggered head arrangement and clustered wiring'1985 4,479,980'Plating rate monitor'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–2021Patents assigned to IBM (56)· patent assignee history

1984–1986Based in Purdys, NY, US· patent location history

1988–2014Based in Mahopac, NY, US· patent location history

1992–2003Based in Somers, NY, US· patent location history

2003–2006Patents assigned to HITACHI GLOBAL STORAGE TECH (8)· patent assignee history

2012–2014Patents assigned to GAYNES MICHAEL A (3)· patent assignee history

2012–2014Patents assigned to MCGLASHAN-POWELL MAURICE (2)· patent assignee history

2012–2014Patents assigned to PARK SOOJAE (2)· patent assignee history

2013–2021Based in Creedmoor, NC, US· patent location history

2017–2018Based in Armonk, NY, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
IBM	56	1984–2021
HITACHI GLOBAL STORAGE TECH	8	2003–2006
GAYNES MICHAEL A	3	2012–2014
MCGLASHAN-POWELL MAURICE	2	2012–2014
PARK SOOJAE	2	2012–2014

Locations

Location	Patents	Span
Mahopac, New York, US	33	1988–2014
Somers, New York, US	22	1992–2003
Creedmoor, NC, US	4	2013–2021
Armonk, New York, US	3	2017–2018
Purdys, New York, US	3	1984–1986