Inventor
MASUDA KATSUMI
JP26 patents
⚠️ This page may combine multiple inventors who share the name “MASUDA KATSUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KUMIAI CHEMICAL INDUSTRY CO
10 patentsUS5763616AJun 9, 1998
Indazolesulfonylurea derivative, its use and intermediate for its production
KUMIAI CHEMICAL INDUSTRY CO17 citations91
US6090815AJul 18, 2000
Pyrimidinyloxyalkanoic amide derivatives and fungicides for agricultural and horticultural use
KUMIAI CHEMICAL INDUSTRY CO27 citations90
US4992438AFeb 12, 1991
Pyrimidine derivatives, process for preparing the same and agricultural or horticultural fungicidal composition containing the same
KUMIAI CHEMICAL INDUSTRY CO34 citations90
US5670452ASep 23, 1997
Indazolesulfonylurea derivative, its use and intermediate for its production
KUMIAI CHEMICAL INDUSTRY CO17 citations81
US5534481AJul 9, 1996
Indazolesulfonylurea derivative, its use and intermediate for its production
KUMIAI CHEMICAL INDUSTRY CO17 citations81
US4814338AMar 21, 1989
Pyrimidine derivative, process for preparing same and agricultural or horticultural fungicidal composition containing same
KUMIAI CHEMICAL INDUSTRY CO20 citations81
US5418212AMay 23, 1995
Alkanoic acid amide derivative or its salt, and herbicidal composition
KUMIAI CHEMICAL INDUSTRY CO8 citations73
US4988704AJan 29, 1991
Pyrimidine derivative, process for preparing same and argicultural or horticultural fungicidal composition containing same
KUMIAI CHEMICAL INDUSTRY CO9 citations72
US5411934AMay 2, 1995
Alkanoic acid amide derivative or its salt, process for producing the same and herbicidal composition
KUMIAI CHEMICAL INDUSTRY CO6 citations62
US6075055AJun 13, 2000
Phenylalkane amide derivatives and agricultural or horticultural fungicides
KUMIAI CHEMICAL INDUSTRY CO3 citations60
RICOH KK
9 patentsUS7212773B2May 1, 2007
Image forming apparatus
RICOH KK107 citations98
US5946529AAug 31, 1999
Image forming apparatus using a roller type charging system
RICOH KK53 citations96
US5878317AMar 2, 1999
Electrophotographic method and apparatus including a toner recycle feature
RICOH KK85 citations96
US7599650B2Oct 6, 2009
Developer bearing member, developing device, process cartridge and image forming apparatus
RICOH KK25 citations92
US7272342B2Sep 18, 2007
Image forming apparatus having a detachable cartridge including a photoconductive drum with axis shaft having a minimal rotational eccentricity, and a method of assembling the image forming apparatus
RICOH KK26 citations92
US7043182B2May 9, 2006
Developer regulating member, developing device, electrophotographic image forming process cartridge, and image forming apparatus including the developer regulating member
RICOH KK35 citations92
US7457570B2Nov 25, 2008
Image forming apparatus including a magnetic brush developing system using a two-component developer comprising toner and carrier
RICOH KK23 citations90
US7813680B2Oct 12, 2010
Developing device, and image forming apparatus and process cartridge comprising the same
RICOH KK11 citations84
US7228093B2Jun 5, 2007
Method and apparatus for image forming capable of performing a stable image development
RICOH KK19 citations84