Inventor
SUGIYAMA YOSHIHIRO
JP25 patents
⚠️ This page may combine multiple inventors who share the name “SUGIYAMA YOSHIHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
14 patentsUS6011271AJan 4, 2000
Semiconductor device and method of fabricating the same
FUJITSU LTD147 citations98
US6235547B1May 22, 2001
Semiconductor device and method of fabricating the same
FUJITSU LTD93 citations97
US6573527B1Jun 3, 2003
Quantum semiconductor device including quantum dots and a fabrication process thereof
FUJITSU LTD72 citations96
US6281519B1Aug 28, 2001
Quantum semiconductor memory device including quantum dots
FUJITSU LTD71 citations96
US6177684B1Jan 23, 2001
Quantum semiconductor device having a quantum dot structure
FUJITSU LTD72 citations96
US5936258AAug 10, 1999
Optical semiconductor memory device and read/write method therefor
FUJITSU LTD55 citations94
US6809371B2Oct 26, 2004
Semiconductor memory device and manufacturing method thereof
FUJITSU LTD27 citations92
US6459107B2Oct 1, 2002
Photodetector having a mixed crystal layer of SiGeC
FUJITSU LTD24 citations92
US5392307AFeb 21, 1995
Vertical optoelectronic semiconductor device
FUJITSU LTD43 citations92
US5160993ANov 3, 1992
High speed optosemiconductor device having multiple quantum wells
FUJITSU LTD10 citations73
US4929984AMay 29, 1990
Resonant tunnelling barrier structure device
FUJITSU LTD7 citations73
US7129136B2Oct 31, 2006
Semiconductor memory device and manufacturing method thereof
FUJITSU LTD2 citations63
US6780699B2Aug 24, 2004
Semiconductor device and method for fabricating the same
FUJITSU LTD5 citations61
US6949805B2Sep 27, 2005
Semiconductor device having low interface state density and method for fabricating the same
FUJITSU LTD0 citations49
RICOH KK
6 patentsUS6258502B1Jul 10, 2001
Two-component developer, two-component developer holding container, and electrophotographic image formation apparatus equipped with the container
RICOH KK73 citations96
US6183926B1Feb 6, 2001
Toner and two-component developer for electrophotographic process and image formation method and image formation apparatus using the toner
RICOH KK73 citations95
US4860050AAug 22, 1989
Developing replenisher material for use in image forming device
RICOH KK33 citations92
US4957842ASep 18, 1990
Liquid developer for electrostatic latent images using flushed pigments
RICOH KK8 citations69
US7621448B2Nov 24, 2009
Information display medium, information managing apparatus, information managing method, guidance managing method, and guidance managing program
RICOH KK5 citations59
US7593737B2Sep 22, 2009
Transportation management system, transportation management method, communication sheet, and communication antenna
RICOH KK0 citations37