Inventor

Steven A. Buhler

Inventor

Sunnyvale, CA, US

Overview

53→

Patents

1987–2013

Patent span

Electricity

Primary field (CPC H)

Patents· 53 as inventor

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

B41Jprimary

B41JTypewriters26%

H10NElectric solid-state devices not otherwise provided for18%

Y10TTechnical subjects covered by former us classification12%

H10DInorganic electric semiconductor devices11%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h104%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light3%

B06BMethods or apparatus for generating or transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency, e.g. for performing mechanical work in general2%

G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure2%

G01NInvestigating or analysing materials by determining their chemical or physical properties2%

G02BOptical elements, systems or apparatus2%

PatentTitleYear

8,579,414'Self-assembling structures for electrostatic extraction of pigments from liquid inks for marking'2013 8,359,748'Method of forming micromachined fluid ejectors using piezoelectric actuation'2013 8,210,661'Stacked slice printhead'2012 8,001,666'Method for forming ceramic thick film element arrays with fine feature size, high-precision definition, and/or high aspect ratios'2011 7,905,580'Multi-layer monolithic fluid ejectors using piezoelectric actuation'2011 7,574,787'Methods to make piezoelectric ceramic thick film array and single elements with a reusable single layer substrate structure'2009 7,517,043'Fluidic structures'2009 7,467,857'Micromachined fluid ejectors using piezoelectric actuation'2008 7,445,315'Thin film and thick film heater and control architecture for a liquid drop ejector'2008 7,401,403'Method for forming ceramic thick film element arrays with fine feature size, high-precision definition, and/or high aspect ratios'2008 7,293,411'Energy scavengers which adjust their frequency by altering liquid distributions on a beam'2007 7,290,336'Method of fabricating an array of multi-electroded piezoelectric transducers for piezoelectric diaphragm structures'2007 7,234,214'Methods for making thick film elements'2007 7,193,643'Scan non-linearity correction using frequency modulation and synchronization with a master clock'2007 7,176,600'Poling system for piezoelectric diaphragm structures'2007 7,118,990'Methods for making large dimension, flexible piezoelectric ceramic tapes'2006 7,089,635'Methods to make piezoelectric ceramic thick film arrays and elements'2006 7,091,650'Piezoelectric ceramic thick film element, array of elements, and devices'2006 7,084,555'Piezoelectric diaphragm structure with outer edge electrode'2006 7,057,330'Broad frequency band energy scavenger'2006 7,053,532'Radially poled piezoelectric diaphragm structures'2006 6,987,348'Piezoelectric transducers'2006 6,967,431'Piezoelectric transducers and methods of manufacture'2005 6,964,201'Large dimension, flexible piezoelectric ceramic tapes'2005 6,924,584'Piezoelectric transducers utilizing sub-diaphragms'2005 6,650,151'Process insensitive electronic driver circuitry for integrated RF switching diodes'2003 6,447,086'Method and apparatus for achieving controlled RF switching ratios to maintain thermal uniformity in the acoustic focal spot of an acoustic ink printhead'2002 6,447,097'Row scrambling in ejector arrays'2002 6,299,272'Pulse width modulation for correcting non-uniformity of acoustic inkjet printhead'2001 5,786,722'Integrated RF switching cell built in CMOS technology and utilizing a high voltage integrated circuit diode with a charge injecting node'1998 5,757,065'High voltage integrated circuit diode with a charge injecting node'1998 5,742,047'Highly uniform five volt CMOS image photodiode sensor array with improved contrast ratio and dynamic range'1998 5,701,060'On-chip high frequency damping for laser diode driver chips'1997 5,614,771'Extended high voltage SCR switch'1997 5,541,439'Layout for a high voltage darlington pair'1996 5,488,301'Electrostatic voltmeter employing a differential cascode'1996 5,465,264'Electronic simulation for compensating laser diode thermal effects'1995 5,349,223'High current high voltage vertical PMOS in ultra high voltage CMOS'1994 5,321,293'Integrated device having MOS transistors which enable positive and negative voltage swings'1994 5,313,252'Apparatus and method for measuring and correcting image transfer smear'1994 5,258,638'Thermal ink jet power MOS device design/layout'1993 5,257,042'Thermal ink jet transducer protection'1993 5,229,308'Bipolar transistors with high voltage MOS transistors in a single substrate'1993 5,214,535'Lens cover assembly for binary diffractive optic lenses'1993 5,214,449'Thermal ink jet bubble containment chamber design for acoustic absorption'1993 5,208,700'Lens cover assembly for binary diffractive optic lenses'1993 5,204,518'Background light compensation for sensor array'1993 5,156,688'Thermoelectric device'1992 5,150,371'Laser diode carrier with a semiconductor cooler'1992 5,144,341'Thermal ink jet drivers device design/layout'1992 4,899,180'On chip heater element and temperature sensor'1990 4,853,718'On chip conductive fluid sensing circuit'1989 4,680,605'High voltage depletion mode transistor with serpentine current path'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2013Patents assigned to XEROX CORP (31)· patent assignee history

1987–1997Based in Redondo Beach, CA, US· patent location history

1997–2013Based in Sunnyvale, CA, US· patent location history

2005–2013Patents assigned to PALO ALTO RES CT INC (22)· patent assignee history

2012–2013Patents assigned to BUHLER STEVEN A (3)· patent assignee history

2012Patents assigned to CHEUNG PATRICK C P (1)· patent assignee history

2013Patents assigned to BIEGELSEN DAVID K (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
XEROX CORP	31	1987–2013
PALO ALTO RES CT INC	22	2005–2013
BUHLER STEVEN Aself	3	2012–2013
BIEGELSEN DAVID K	1	2013
CHEUNG PATRICK C P	1	2012

Locations

Location	Patents	Span
Sunnyvale, California, US	33	1997–2013
Redondo Beach, California, US	20	1987–1997