Inventor
YOSHITSUGU TAKAO
JP21 patents
⚠️ This page may combine multiple inventors who share the name “YOSHITSUGU TAKAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
13 patentsUS6364532B1Apr 2, 2002
Hydrodynamic bearing and motor having the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD56 citations96
US6787954B2Sep 7, 2004
Spindle motor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD47 citations92
US6357916B2Mar 19, 2002
Hydrodynamic bearing device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD28 citations92
US6196722B1Mar 6, 2001
Hydrodynamic bearing
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD50 citations92
US7420309B2Sep 2, 2008
Spindle motor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations90
US6717310B2Apr 6, 2004
Spindle motor and method for assembling the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD40 citations90
US7492548B2Feb 17, 2009
Hydrodynamic bearing device and disk rotating apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations84
US6467963B2Oct 22, 2002
Fluid bearing equipment
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations83
US6188152B1Feb 13, 2001
Motor and hard disk drive having a reduced vibration motor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations72
US7321178B2Jan 22, 2008
Spindle motor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations71
US5708520AJan 13, 1998
Rotating polygon mirror driving apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations71
US5555124ASep 10, 1996
Rotating polygon mirror driving apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations71
US5906440AMay 25, 1999
Dynamic pressure type fluid bearing device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations69
PANASONIC CORP
8 patentsUS7473034B2Jan 6, 2009
Hydrodynamic bearing device, motor, and disk driving apparatus
PANASONIC CORP20 citations92
US8013487B2Sep 6, 2011
Hydrodynamic bearing device, and spindle motor and information apparatus equipped with same
PANASONIC CORP13 citations82
US7535134B2May 19, 2009
Spindle motor, and recording and reproducing apparatus equipped with the same
PANASONIC CORP6 citations71
US7830637B2Nov 9, 2010
Hydrodynamic bearing device and disk rotation apparatus
PANASONIC CORP4 citations62
US7622837B2Nov 24, 2009
Hydrodynamic bearing device and spindle motor having the bearing device, and recording and/or reproducing apparatus using the spindle motor
PANASONIC CORP6 citations62
US7589934B2Sep 15, 2009
Hydrodynamic bearing device and disk rotating apparatus
PANASONIC CORP3 citations62
US7898129B2Mar 1, 2011
Spindle motor, and recording and reproducing apparatus equipped with the same
PANASONIC CORP0 citations49
US7940492B2May 10, 2011
Hydrodynamic bearing device, spindle motor, and recording and reproducing apparatus
PANASONIC CORP0 citations41