Inventor
HOSOKAWA HIROSHI
JP164 patents
⚠️ This page may combine multiple inventors who share the name “HOSOKAWA HIROSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
34 patentsUS7480476B2Jan 20, 2009
Developer container, developer supplying device, and image forming apparatus
RICOH KK115 citations99
US7321744B2Jan 22, 2008
Developer container, developer supplying device, and image forming apparatus
RICOH KK111 citations99
US7697870B2Apr 13, 2010
Developer container, developer supplying device, and image forming apparatus
RICOH KK54 citations98
US7519317B2Apr 14, 2009
Developer container, developer supplying device, and image forming apparatus
RICOH KK72 citations98
US7076192B2Jul 11, 2006
Powder conveying device and image forming apparatus using the same
RICOH KK55 citations96
US6560431B2May 6, 2003
Toner replenishing device and image forming apparatus using the same
RICOH KK56 citations96
US6249661B1Jun 19, 2001
Device for supporting an image carrier included in an image forming apparatus
RICOH KK60 citations96
US6033818AMar 7, 2000
Developing device for an image forming apparatus
RICOH KK53 citations96
US5879752AMar 9, 1999
Method of coating a toner conveyor roller
RICOH KK62 citations96
US5845183ADec 1, 1998
Developing device for an image forming apparatus
RICOH KK52 citations96
US5826144AOct 20, 1998
Developing device for an electrophotographic recording apparatus including bias control of a toner supplying roller
RICOH KK68 citations96
US5768665AJun 16, 1998
Image forming apparatus with bias control to prevent undesirable toner deposition
RICOH KK58 citations96
US5708942AJan 13, 1998
Developing device for an image forming apparatus
RICOH KK53 citations96
US5697026ADec 9, 1997
Developing device having the lengths of two toner transporting rollers and an image bearing member in specific relationships
RICOH KK62 citations96
US5625440AApr 29, 1997
Developing device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scattering
RICOH KK64 citations96
US5625438AApr 29, 1997
Toner, and devices for electrostatically depositing a uniform application thereof
RICOH KK40 citations96
US5625441AApr 29, 1997
Developing device for an image forming apparatus
RICOH KK54 citations96
US5617191AApr 1, 1997
Toner conveyor roller and image forming apparatus having the same
RICOH KK84 citations96
US5489747AFeb 6, 1996
Developing device for an image forming apparatus
RICOH KK73 citations96
US5486909AJan 23, 1996
Developing device for an image forming apparatus
RICOH KK56 citations96
US5482265AJan 9, 1996
Sheet feeder for an image forming apparatus
RICOH KK91 citations96
US5666625ASep 9, 1997
Device for electrostatically developing a latent image on an image carrier
RICOH KK62 citations95
US6212343B1Apr 3, 2001
Developing device, process cartridge and image forming apparatus that prevent toner leakage
RICOH KK93 citations94
US6163666ADec 19, 2000
Process cartridge and an image forming apparatus using the same process cartridge and a method of manufacturing the same process cartridge
RICOH KK81 citations94
US5689782ANov 18, 1997
Developing apparatus for electronic photographic recording equipment, having two developer transfer rollers
RICOH KK64 citations94
US4875063AOct 17, 1989
Electrostatic recording apparatus
RICOH KK58 citations94
US7398038B2Jul 8, 2008
Image forming apparatus using a toner container and a process cartridge
RICOH KK47 citations93
US7212767B2May 1, 2007
Image forming apparatus and process cartridge removably mounted thereto
RICOH KK27 citations93
US5819145AOct 6, 1998
Image forming device for forming a uniform toner layer on a developing roller
RICOH KK41 citations93
US5627630AMay 6, 1997
Developing apparatus having a toner supporting roller with an inner layer and surface layer
RICOH KK48 citations93
US7136610B2Nov 14, 2006
Image forming apparatus using installable process cartridge, method of positioning process cartridge, and process cartridge itself
RICOH KK38 citations92
US7024133B2Apr 4, 2006
Image forming apparatus using a user installable process cartridge, a method of arranging the process cartridge, and the process cartridge itself
RICOH KK50 citations92
US5930561AJul 27, 1999
Process cartridge and image-formation device suitable for miniaturization
RICOH KK44 citations92
US5552870ASep 3, 1996
Developing device for an image forming apparatus
RICOH KK39 citations92
SANYO ELECTRIC CO
5 patentsUS4981525AJan 1, 1991
Photovoltaic device
SANYO ELECTRIC CO176 citations98
US5580473ADec 3, 1996
Methods of removing semiconductor film with energy beams
SANYO ELECTRIC CO97 citations96
US5428961AJul 4, 1995
Micromachines
SANYO ELECTRIC CO61 citations96
US6573001B1Jun 3, 2003
Method of manufacturing enclosed battery and enclosed battery
SANYO ELECTRIC CO17 citations92
US5413959AMay 9, 1995
Method of modifying transparent conductive oxide film including method of manufacturing photovoltaic device
SANYO ELECTRIC CO49 citations92
RICOH CO LTD
4 patentsUS8005406B2Aug 23, 2011
Developer container, developer supplying device, and image forming apparatus
RICOH CO LTD60 citations98
US7835673B2Nov 16, 2010
Developer container, developer supplying device, and image forming apparatus
RICOH CO LTD58 citations98
US9581937B2Feb 28, 2017
Powder container and image forming apparatus
RICOH CO LTD11 citations92
USD433441SNov 7, 2000
Toner cartridge
RICOH CO LTD25 citations92
HOSOKAWA HIROSHI
2 patentsCANON KK
2 patentsMITSUBISHI RAYON CO
1 patentSEIKO EPSON CORP
1 patentMITSUBISHI ELECTRIC CORP
1 patentShowing the top 50 of 164 patents by PatentIndex Score.