Inventor
SHIMIZU RYUUICHI
JP13 patents
⚠️ This page may combine multiple inventors who share the name “SHIMIZU RYUUICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
6 patentsUS5649273AJul 15, 1997
Belt-type fixing device having an irregular surface contour
HITACHI LTD24 citations92
US5345301ASep 6, 1994
Image fixing device and electrophotographic apparatus incorporated with such device
HITACHI LTD23 citations92
US5519479AMay 21, 1996
Fixing device for electrophotography and electrophotographic apparatus incorporating the fixing device
HITACHI LTD12 citations82
US5363180ANov 8, 1994
Fixing device for electrophotography and electrophotographic apparatus incorporating the fixing device
HITACHI LTD18 citations82
US5508138AApr 16, 1996
Fixing device for electrophotography and electrophotographic apparatus incorporating the fixing device
HITACHI LTD10 citations74
US6131000AOct 10, 2000
Electrophotographic printing apparatus using electric potential dividing development
HITACHI LTD2 citations63
RICOH PRINTING SYS LTD
4 patentsUS7022448B2Apr 4, 2006
Electrophotographic toner and image-forming system
RICOH PRINTING SYS LTD8 citations73
US7459252B2Dec 2, 2008
Electrophotographic toner
RICOH PRINTING SYS LTD4 citations62
US7327974B2Feb 5, 2008
Electrophotographic toner and image-forming system
RICOH PRINTING SYS LTD3 citations62
US7144667B2Dec 5, 2006
Electrostatic charge image developing toner, and developer, image forming apparatus and image forming method using the same toner
RICOH PRINTING SYS LTD2 citations62