Inventor
HASEGAWA KAZUMASA
JP33 patents
⚠️ This page may combine multiple inventors who share the name “HASEGAWA KAZUMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO EPSON CORP
25 patentsUS6373461B1Apr 16, 2002
Piezoelectric transducer and electrophoretic ink display apparatus using piezoelectric transducer
SEIKO EPSON CORP165 citations99
US6345424B1Feb 12, 2002
Production method for forming liquid spray head
SEIKO EPSON CORP89 citations98
US5933167AAug 3, 1999
Printer head for ink jet recording
SEIKO EPSON CORP45 citations96
US5802686ASep 8, 1998
Process for the preparation of an ink jet printer head
SEIKO EPSON CORP90 citations96
US5719607AFeb 17, 1998
Liquid jet head
SEIKO EPSON CORP87 citations96
US5530465AJun 25, 1996
Liquid spray head and its production method
SEIKO EPSON CORP85 citations96
US6842166B2Jan 11, 2005
Piezoelectric transducer and electrophoretic ink display apparatus using piezoelectric transducer
SEIKO EPSON CORP14 citations93
US6717837B2Apr 6, 2004
Ferroelectric memory device and method of operating memory cell including ferroelectric capacitor
SEIKO EPSON CORP20 citations93
US7169621B2Jan 30, 2007
Ferroelectric memory device
SEIKO EPSON CORP21 citations92
US6791863B2Sep 14, 2004
Ferroelectric memory device and method of manufacturing the same
SEIKO EPSON CORP21 citations92
US6690598B2Feb 10, 2004
Ferroelectric memory device and method of manufacturing the same
SEIKO EPSON CORP27 citations92
US6276781B1Aug 21, 2001
Liquid jet recording head and manufacturing method therefor, and liquid jet recording head drive circuit and drive method
SEIKO EPSON CORP22 citations92
US6690599B2Feb 10, 2004
Ferroelectric memory device
SEIKO EPSON CORP15 citations84
US6639823B2Oct 28, 2003
Ferroelectric memory device and method of driving the same
SEIKO EPSON CORP17 citations84
US7173602B2Feb 6, 2007
Piezoelectric transducer and electrophoretic ink display apparatus using piezoelectric transducer
SEIKO EPSON CORP7 citations74
US6930339B2Aug 16, 2005
Ferroelectric memory and electronic apparatus
SEIKO EPSON CORP8 citations74
US6930340B2Aug 16, 2005
Memory cell array including ferroelectric capacitors, method for making the same, and ferroelectric memory device
SEIKO EPSON CORP9 citations74
US6913937B2Jul 5, 2005
Memory cell array having ferroelectric capacity, method of manufacturing the same and ferroelectric memory device
SEIKO EPSON CORP7 citations74
US6737690B2May 18, 2004
Ferroelectronic memory and electronic apparatus
SEIKO EPSON CORP10 citations74
US6727536B2Apr 27, 2004
Ferroelectric memory device
SEIKO EPSON CORP12 citations74
US6617627B2Sep 9, 2003
Memory cell array having ferroelectric capacitors, method of fabricating the same, and ferroelectric memory device.
SEIKO EPSON CORP7 citations74
US6455106B1Sep 24, 2002
Method of forming oxide-ceramics film
SEIKO EPSON CORP11 citations74
US7244979B2Jul 17, 2007
Semiconductor memory device and method for manufacturing the same
SEIKO EPSON CORP7 citations73
US7184293B2Feb 27, 2007
Crosspoint-type ferroelectric memory
SEIKO EPSON CORP4 citations63
US6891741B2May 10, 2005
Ferroelectric memory device
SEIKO EPSON CORP0 citations52