Inventor

Andrew L. Van Brocklin

Inventor

Corvallis, OR, US

Overview

1999–2020

Patent span

Physics

Primary field (CPC G)

Patents· 182 as inventor

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

B41Jprimary

B41JTypewriters21%

G11BInformation storage based on relative movement between record carrier and transducer14%

G11CStatic stores9%

H10BElectronic memory devices7%

G06FElectric digital data processing5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%

G09GArrangements or circuits for control of indicating devices using static means to present variable information4%

H10NElectric solid-state devices not otherwise provided for3%

G02BOptical elements, systems or apparatus3%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h103%

PatentTitleYear

10,836,159Apparatus with microelectromechanical die and application specific integrated circuit2020 10,654,268Modifying firing parameters for printheads2020 10,513,113Printhead circuit2019 10,493,752Detecting a drive bubble formation and collapse2019 10,434,766Bias current control for print nozzle amplifier2019 10,434,768Printing system comprising a microelectromechanical die and an application specific integrated circuit2019 10,421,273Method and apparatus to regulate temperature of printheads2019 10,369,785Inkjet printhead device, fluid ejection device, and method thereof2019 10,336,089Printheads with sensor plate impedance measurement2019 10,315,414Printhead waveform voltage amplifier2019 10,308,035Fluid level sensor and related methods2019 10,272,428Microfluidic sensing device and system2019 10,189,248Printhead with microelectromechanical die and application specific integrated circuit2019 10,183,488Printer fluid impedance sensing in a printhead2019 10,124,582Method and apparatus to regulate temperature of printheads2018 10,112,390Piezoelectric fluid ejection assembly2018 10,076,905Piezoelectric printhead assembly2018 10,040,280Printhead circuit with trimming2018 10,016,974Actuating element driver circuit with trim control2018 9,962,949Printheads with sensor plate impedance measurement2018 9,956,765Inkjet printing system, fluid ejection system, and method thereof2018 9,950,517Detecting a drive bubble formation and collapse2018 9,925,767'Waveform selection and/or scaling for driving nozzle of fluid-jet printing device'2018 9,925,787'Fluid level sensor and related methods'2018 9,862,186'Inkjet printhead device, fluid ejection device, and method thereof'2018 9,862,183'Printhead waveform voltage amplifier'2018 9,855,746'Piezoelectric printhead assembly'2018 9,776,404'Piezoelectric printhead assembly'2017 9,701,116'Determining an issue in an inkjet nozzle with impedance measurements'2017 9,586,410'Inkjet printing system, fluid ejection system, and method thereof'2017 9,579,885'Method and system to store drop counts'2017 9,517,630'Inkjet printing system, fluid ejection system, and method thereof'2016 9,511,596'Replaceable printing component with factory identity code'2016 9,463,622'Determining an issue in an inkjet nozzle with impedance measurements'2016 9,452,604'Fluid level sensor and related methods'2016 9,421,764'Waveform selection and/or scaling for driving nozzle of fluid-jet printing device'2016 9,409,393'Detecting a drive bubble formation and collapse'2016 9,352,564'Determining an issue in an inkjet nozzle with impedance measurements'2016 9,327,512'Inkjet printhead device, fluid ejection device, and method thereof'2016 9,289,977'Bias current reduction for print nozzle amplifier'2016 9,283,747'Fluid ejection devices and methods thereof'2016 9,266,321'Replaceable printing component with factory identity code'2016 9,221,251'Adaptive level shifter for print nozzle amplifier'2015 9,044,936'Inkjet issue determination'2015 9,044,942'Thermal sensing fluid ejection assembly and method'2015 8,899,709'Determining an issue with an inkjet nozzle using an impedance difference'2014 8,882,213'Fluid ejection systems and methods thereof'2014 8,864,280'Switchable feedback damping of drop-on-demand piezoelectric fluid-ejection mechanism'2014 8,828,570'Battery temperature sensor'2014 8,789,932'Printhead and related methods and systems'2014 8,770,692'Crosstalk reduction in piezo printhead'2014 8,770,707'Drop detector assembly and method'2014 8,757,750'Crosstalk reduction in piezo printhead'2014 8,540,355'Fluid ejection device with circulation pump'2013 8,513,833'Circuit limiting an absolute voltage difference between electrical paths of photovoltaic dies'2013 8,497,891'Enhancing optical density'2013 8,353,567'Drive waveform generation'2013 8,262,201'Micro writing and reading'2012 8,257,906'Multi-layered radiation imageable coating'2012 8,126,141'Interferometric communication'2012 7,935,404'System and method for marking an optical disk'2011 7,933,191'Optical disc drive having two optomechanical mechanisms'2011 7,916,164'Labeling methods and apparatus using energy of two wavelengths'2011 7,889,220'Device and method for maintaining optical energy density on a medium'2011 7,890,968'Optical disc device having two optomechanical mechanisms'2011 7,816,722'Memory array'2010 7,768,878'Actuator calibration using a focus error signal'2010 7,733,298'Display device'2010 7,729,216'Methods and apparatus for marking media with collimated electromagnetic radiation beam'2010 7,728,859'Optical printhead'2010 7,728,912'Display system'2010 7,724,627'Encoder spokes detection prior to forming image on optically writable label surface of optical disc'2010 7,678,438'Optical media'2010 7,679,633'Facilitating focusing of a multi-function digital media drive'2010 7,676,119'Method and system for using an optical sensor array to control a labeling device'2010 7,672,213'Optical print head using a glass arm waveguide'2010 7,670,659'Substrate marking using encapsulated materials'2010 7,656,573'Method and apparatus for controlling a gap between conductors in an electro-mechanical device'2010 7,657,487'Apparatus and method for providing data storage device security'2010 7,636,280'Calibration of lens position in an optical disc drive'2009 7,577,063'Calibration of a focus offset in an optical drive'2009 7,569,331'Conductive patterning'2009 7,551,524'Methods and apparatus to compensate for power output variations over time'2009 7,538,889'Calibration feedback-control circuit for diffraction light devices'2009 7,532,226'Bleaching the background of a medium'2009 7,514,661'Focus calibration in an optical drive'2009 7,515,165'Laser power calibration in an optical disc drive'2009 7,515,514'Approximating topology of optically writable medium surface'2009 7,486,263'Electrostatic device'2009 7,477,274'Thermally sensitive medium and methods and systems for forming an image on a thermally sensitive medium'2009 7,443,772'Focus offset calibration'2008 7,443,581'Adjustable optical characteristic'2008 7,439,997'System and method for controlling a multi-function digital media drive'2008 7,433,114'Phase change electophoretic imaging for rewritable applications'2008 7,400,489'System and a method of driving a parallel-plate variable micro-electromechanical capacitor'2008 7,379,083'Optical disc drive focusing apparatus'2008 7,372,714'Methods and memory structures using tunnel-junction device as control element'2008 7,370,978'Encrypting data'2008 7,364,780'Thermally-sensitive medium with Fabry-Perot cavities'2008 7,358,966'Selective update of micro-electromechanical device'2008 7,333,126'Optical disc having layers corresponding to different colors and sensitive to optical beam wavelengths'2008 7,327,056'Marked hub for sensing motor speed'2008 7,324,419'Focus control via AC input signal'2008 7,324,128'Synchronization of pixilated labeling media'2008 7,315,493'Apparatus and method for calibrating a laser imagible apparatus'2008 7,301,879'Optical print head'2007 7,298,677'Optical disc drive apparatus and method'2007 7,290,221'User interface, method and apparatus for providing three-dimensional object fabrication status'2007 7,286,120'Large area display and method of manufacturing same'2007 7,239,582'Interpolation of optical disc vertical displacement information'2007 7,239,587'Approximating topology of optical disc surface'2007 7,218,499'Charge control circuit'2007 7,213,939'Hue adjusting lighting system'2007 7,212,292'Interferometer calibration methods and apparatus'2007 7,201,732'Dispensing method and device for delivering material to an eye'2007 7,187,637'Opto-mechanical adjustment based on sensing label side of optical disc'2007 7,188,348'Optical disc drive apparatus and method'2007 7,184,199'Phase change electrophoretic imaging for rewritable applications'2007 7,177,246'Optical disk drive focusing apparatus using sum signal'2007 7,148,088'Memory structure and method making'2006 7,145,586'Marking optical disc based on information related to data side thereof'2006 7,133,036'Display with data group comparison'2006 7,130,207'Methods and memory structures using tunnel-junction device as control element'2006 7,125,644'Systems and methods for storing data on an optical disk'2006 7,110,122'Interferometer calibration methods and apparatus'2006 7,103,896'Mechanism to aid optical beam focusing on optical disc'2006 7,084,894'Optical disc drive focusing apparatus'2006 7,072,108'Enhanced contrast projection screen'2006 7,057,258'Resistive memory device and method for making the same'2006 7,038,878'Micromover configured to move a magnetic storage medium in perpendicular directions in a plane'2006 7,019,381'Method of providing multiple logical bits per memory cell'2006 6,970,285'Phase change electrophoretic imaging for rewritable applications'2005 6,967,149'Storage structure with cleaved layer'2005 6,967,350'Memory structures'2005 6,958,946'Memory storage device which regulates sense voltages'2005 6,940,085'Memory structures'2005 6,917,532'Memory storage device with segmented column line array'2005 6,897,506'Systems and methods using non-volatile memory cells'2005 6,893,951'Vertical interconnection structure and methods'2005 6,879,525'Feedback write method for programmable memory'2005 6,872,437'Optical disc with pseudorandom series of marks on optical disc track'2005 6,870,751'Low-energy writing in cross-point array memory devices'2005 6,858,883'Partially processed tunnel junction control element'2005 6,853,486'Enhanced contrast projection screen'2005 6,847,350'Optical pointing device'2005 6,842,369'Intermesh memory device'2005 6,839,275'Memory system having control circuit configured to receive data, provide encoded received data to match a fault pattern in the array of memory cells'2005 6,831,861'Methods and memory structures using tunnel-junction device as control element'2004 6,821,848'Tunnel-junction structures and methods'2004 6,818,549'Buried magnetic tunnel-junction memory cell and methods'2004 6,781,858'Cubic memory array'2004 6,777,270'Resistive memory for data storage devices'2004 6,774,458'Vertical interconnection structure and methods'2004 6,717,234'Resistive memory for data storage devices'2004 6,717,215'Memory structures'2004 6,711,045'Methods and memory structures using tunnel-junction device as control element'2004 6,707,698'Dual memory cell'2004 6,707,087'Structure of chalcogenide memory element'2004 6,703,652'Memory structure and method making'2004 6,687,147'Cubic memory array with diagonal select lines'2004 6,677,220'Antifuse structure and method of making'2004 6,661,691'Interconnection structure and methods'2003 6,643,159'Cubic memory array'2003 6,625,055'Multiple logical bits per memory cell in a memory device'2003 6,597,794'Portable electronic device having an external speaker chamber'2003 6,570,795'Defective memory component of a memory device used to represent a data bit in a bit sequence'2003 6,559,516'Antifuse structure and method of making'2003 6,552,713'Optical pointing device'2003 6,549,447'Memory cell structure'2003 6,534,841'Continuous antifuse material in memory structure'2003 6,501,697'High density memory sense amplifier'2002 6,472,848'Reducing battery discharge current by throttling CPU power'2002 6,449,575'Voltage control of integrated circuits'2002 6,393,371'Voltage control of integrated circuits'2002 6,304,824'Voltage control of integrated circuits'2001 6,266,241'Notebook computer with ergonomic stand'2001 6,191,546'Proportional integral cooling device controller for electronic device'2001 6,167,955'Multi-mode heat transfer using a thermal heat pipe valve'2001 6,160,719'Custom docking tray for EMI reduction'2000 6,047,766'Multi-mode heat transfer using a thermal heat pipe valve'2000 6,011,371'Proportional integral fan controller for electronic device'2000 5,929,581'Proportional integral fan controller for computer'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2003Patents assigned to HEWLETT PACKARD CO (14)· patent assignee history

1999–2020Based in Corvallis, OR, US· patent location history

2003–2020Patents assigned to HEWLETT PACKARD DEVELOPMENT CO (143)· patent assignee history

2003–2010Based in Corvalis, OR, US· patent location history

2003Based in Corvalllis, OR, US· patent location history

2008–2018Patents assigned to VAN BROCKLIN ANDREW L (36)· patent assignee history

2008–2016Patents assigned to ANDERSON DARYL E (9)· patent assignee history

2016–2018Patents assigned to HEWLETT PACKARD DEVELOPMENT CO LP (12)· patent assignee history

2019Based in Covallis, OR, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HEWLETT PACKARD DEVELOPMENT CO	143	2003–2020
VAN BROCKLIN ANDREW Lself	36	2008–2018
HEWLETT PACKARD CO	14	1999–2003
HEWLETT PACKARD DEVELOPMENT CO LP	12	2016–2018
ANDERSON DARYL E	9	2008–2016

Locations

Location	Patents	Span
Corvallis, OR, US	178	1999–2020
Corvalis, OR, US	2	2003–2010
Covallis, OR, US	1	2019
Corvalllis, OR, US	1	2003