Inventor
HAYASHI KEISUKE
JP46 patents
⚠️ This page may combine multiple inventors who share the name “HAYASHI KEISUKE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEMICONDUCTOR ENERGY LAB
20 patentsUS6597348B1Jul 22, 2003
Information-processing device
SEMICONDUCTOR ENERGY LAB248 citations99
US6472684B1Oct 29, 2002
Nonvolatile memory and manufacturing method thereof
SEMICONDUCTOR ENERGY LAB157 citations99
US7697052B1Apr 13, 2010
Electronic view finder utilizing an organic electroluminescence display
SEMICONDUCTOR ENERGY LAB62 citations98
US6753854B1Jun 22, 2004
Display device
SEMICONDUCTOR ENERGY LAB75 citations98
US6555422B1Apr 29, 2003
Thin film transistor and method of manufacturing the same
SEMICONDUCTOR ENERGY LAB76 citations98
US6867752B1Mar 15, 2005
Portable information processing system
SEMICONDUCTOR ENERGY LAB61 citations96
US6756640B2Jun 29, 2004
Nonvolatile memory and manufacturing method thereof
SEMICONDUCTOR ENERGY LAB34 citations96
US6509602B2Jan 21, 2003
Nonvolatile memory and manufacturing method thereof
SEMICONDUCTOR ENERGY LAB65 citations96
US6483484B1Nov 19, 2002
Goggle type display system
SEMICONDUCTOR ENERGY LAB58 citations96
US7368338B2May 6, 2008
Nonvolatile memory and manufacturing method thereof
SEMICONDUCTOR ENERGY LAB10 citations93
US6856304B1Feb 15, 2005
Liquid crystal projector
SEMICONDUCTOR ENERGY LAB20 citations93
US6590581B1Jul 8, 2003
Display device
SEMICONDUCTOR ENERGY LAB39 citations93
US6573952B1Jun 3, 2003
Goggle type display device
SEMICONDUCTOR ENERGY LAB47 citations93
US6515648B1Feb 4, 2003
Shift register circuit, driving circuit of display device, and display device using the driving circuit
SEMICONDUCTOR ENERGY LAB25 citations93
US9201244B2Dec 1, 2015
Goggle type display system
SEMICONDUCTOR ENERGY LAB5 citations84
US7158098B2Jan 2, 2007
Portable information processing system
SEMICONDUCTOR ENERGY LAB13 citations84
US7989873B2Aug 2, 2011
Nonvolatile memory and manufacturing method thereof
SEMICONDUCTOR ENERGY LAB5 citations74
US7528816B2May 5, 2009
Shift register circuit, driving circuit of display device, and display device using the driving circuit
SEMICONDUCTOR ENERGY LAB4 citations74
US7078769B2Jul 18, 2006
Nonvolatile memory and manufacturing method thereof
SEMICONDUCTOR ENERGY LAB8 citations74
US7075510B2Jul 11, 2006
Shift register circuit, driving circuit of display device and display device using the driving circuit
SEMICONDUCTOR ENERGY LAB0 citations52
HAYASHI KEISUKE
8 patentsUS9067427B2Jun 30, 2015
Liquid discharge head and image forming apparatus
HAYASHI KEISUKE8 citations83
US8888260B2Nov 18, 2014
Liquid-jet head and image forming apparatus
HAYASHI KEISUKE5 citations72
US10391770B2Aug 27, 2019
Liquid discharge head, liquid discharge unit, and device of discharging liquid
HAYASHI KEISUKE1 citations62
US9242464B1Jan 26, 2016
Liquid droplet discharge head, image forming apparatus including same, and method of inspecting liquid droplet discharge head
HAYASHI KEISUKE2 citations62
US9375923B2Jun 28, 2016
Piezoelectric element, liquid droplet discharging head, liquid droplet discharging device, image forming apparatus, and manufacturing method of piezoelectric element
HAYASHI KEISUKE1 citations51
US8926068B2Jan 6, 2015
Liquid discharge head, method of manufacturing liquid discharge head, and image forming device
HAYASHI KEISUKE1 citations51
US8425013B2Apr 23, 2013
Piezoelectric actuator, liquid ejection head, and image forming apparatus
HAYASHI KEISUKE0 citations51
US8801153B2Aug 12, 2014
Liquid drop ejecting head, image forming device, and method of manufacturing liquid drop ejecting head
HAYASHI KEISUKE0 citations41
RICOH KK
4 patentsUS5184184AFeb 2, 1993
Image forming apparatus
RICOH KK25 citations92
US7651205B2Jan 26, 2010
Liquid discharging head using piezoelectric actuator and image forming apparatus using the liquid discharging head
RICOH KK7 citations74
US6108511AAug 22, 2000
Toner collecting and reusing device for use in an image forming apparatus and a method thereof
RICOH KK11 citations73
US5382129AJan 17, 1995
Sheet feed device for an image forming apparatus
RICOH KK9 citations73
RICOH CO LTD
2 patentsTOYOTA MOTOR CO LTD
2 patentsMASUDA TOSHIAKI
2 patentsUS10124585B2Nov 13, 2018
Liquid discharge head, liquid discharge device, and liquid discharge apparatus
MASUDA TOSHIAKI1 citations51
US9362478B2Jun 7, 2016
Method of producing electromechanical transducer element, electromechanical transducer element, liquid droplet discharge head, and image forming apparatus
MASUDA TOSHIAKI0 citations51