Inventor
YOKOYAMA KAZUO
JP44 patents
⚠️ This page may combine multiple inventors who share the name “YOKOYAMA KAZUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
24 patentsUS5920418AJul 6, 1999
Diffractive optical modulator and method for producing the same, infrared sensor including such a diffractive optical modulator and method for producing the same, and display device including such a diffractive optical modulator
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD164 citations99
US6101164AAug 8, 2000
High density recording by a conductive probe contact with phase change recording layer
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD119 citations98
US5949570ASep 7, 1999
Diffractive optical modulator and method for producing the same, infrared sensor including such a diffractive optical modulator and method for producing the same, and display device including such a diffractive optical modulator
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD97 citations98
US7258379B2Aug 21, 2007
Laminated-type multi-joint portion drive mechanism and manufacturing method therefor, grasping hand and robot arm provided with the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD58 citations96
US6903491B2Jun 7, 2005
Piezoelectric element, actuator, and inkjet head
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD52 citations96
US6724580B2Apr 20, 2004
Actuator with piezoelectric member
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD55 citations96
US6072620AJun 6, 2000
Output efficiency control device, projection-type display apparatus, infrared sensor, and non-contact thermometer
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD56 citations96
US5381753AJan 17, 1995
Fabrication method of fine structures
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD79 citations96
US7259495B2Aug 21, 2007
Conductive polymer actuator
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD20 citations93
US6982932B2Jan 3, 2006
Recording/reproducing head and recording/reproducing apparatus incorporating the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD28 citations93
US6943990B1Sep 13, 2005
Head support mechanism, information recording/reproducing apparatus, and method of manufacturing head support mechanism
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD22 citations92
US5438206AAug 1, 1995
Positioning device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD26 citations92
US5286977AFeb 15, 1994
Positioning device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD33 citations92
US5157523AOct 20, 1992
Projection type liquid crystal display unit including orthogonal phase plates
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD39 citations92
US4989954AFeb 5, 1991
Projection type liquid cyrstal display device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD24 citations92
US4835070AMay 30, 1989
Magnetic recording medium and method of producing the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD19 citations82
US6504796B1Jan 7, 2003
Magneto-optical head having thickness of the core same as a track width
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations74
US4288307ASep 8, 1981
Method of making a magnetic head
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD14 citations74
US5448386ASep 5, 1995
Optical liquid crystal element
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations73
US5237440AAug 17, 1993
Method of manufacturing a liquid crystal display panel
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations73
US4170032AOct 2, 1979
Magnetic head and method for preparing the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations73
US4238215ADec 9, 1980
Magnetic head and method for preparing the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations68
US6650598B2Nov 18, 2003
Magnetic head having magnetoresistance device and recording/reproducing apparatus incorporating the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations63
US5835312ANov 10, 1998
Magnetic head for use with a recording medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations63
PANASONIC CORP
9 patentsUS7778732B2Aug 17, 2010
Robot apparatus performing shielding operation of an object from workspace
PANASONIC CORP23 citations92
US7654595B2Feb 2, 2010
Articulated driving mechanism, method of manufacturing the mechanism, and holding hand and robot using the mechanism
PANASONIC CORP46 citations92
US8000044B2Aug 16, 2011
Lens holder driving device and image pickup unit employing planary-driven polymer actuator
PANASONIC CORP9 citations84
US7679268B2Mar 16, 2010
Polymer actuator having active member layer that expands or contracts upon application of electric field
PANASONIC CORP10 citations84
US7643217B2Jan 5, 2010
Varifocal lens device
PANASONIC CORP9 citations84
US7586242B2Sep 8, 2009
Actuator and method for manufacturing planar electrode support for actuator
PANASONIC CORP18 citations84
US7539558B2May 26, 2009
Robot apparatus
PANASONIC CORP13 citations84
US7839055B2Nov 23, 2010
Flat-plate lamination-type conductive polymer actuator and flat-plate lamination-type conductive polymer actuator device as well as operating method thereof
PANASONIC CORP3 citations63
US9197969B2Nov 24, 2015
Optical microphone
PANASONIC CORP1 citations52