Inventor
KUMANO MASAFUMI
JP17 patents
⚠️ This page may combine multiple inventors who share the name “KUMANO MASAFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
14 patentsUS5304357AApr 19, 1994
Apparatus for zone melting recrystallization of thin semiconductor film
RICOH KK374 citations98
US5108843AApr 28, 1992
Thin film semiconductor and process for producing the same
RICOH KK371 citations96
US7001457B2Feb 21, 2006
Crystal growth method, crystal growth apparatus, group-III nitride crystal and group-III nitride semiconductor device
RICOH KK31 citations92
US5140397AAug 18, 1992
Amorphous silicon photoelectric device
RICOH KK40 citations92
US7531038B2May 12, 2009
Crystal growth method
RICOH KK9 citations84
US4792510ADec 20, 1988
Electrophotographic element with silicide treated porous Al2 O3 sublayer
RICOH KK23 citations81
US4966821AOct 30, 1990
Perpendicular magnetic recording medium
RICOH KK21 citations75
US5283207AFeb 1, 1994
Photoconductive material and photosensor employing the photoconductive material
RICOH KK9 citations74
US5155567AOct 13, 1992
Amorphous photoconductive material and photosensor employing the photoconductive material
RICOH KK11 citations74
US4943839AJul 24, 1990
Contact type image sensor
RICOH KK15 citations74
US5144458ASep 1, 1992
Total contact type image sensor
RICOH KK9 citations73
US4734346AMar 29, 1988
Photosensitive material for electrophotography
RICOH KK9 citations73
US5393953AFeb 28, 1995
Electron-beam heating apparatus and heating method thereof
RICOH KK11 citations72
US5053844AOct 1, 1991
Amorphous silicon photosensor
RICOH KK19 citations71