Inventor
KOGURE MAKOTO
JP14 patents
Patents
14 patentsUS6023399AFeb 8, 2000
Decentralized control system and shutdown control apparatus
HITACHI LTD109 citations97
US5835534ANov 10, 1998
Intrinsically safe barrier and field bus system
HITACHI LTD55 citations95
US5469156ANov 21, 1995
Field sensor communication system
HITACHI LTD86 citations95
US6681139B1Jan 20, 2004
Distributed control system and filtering method used in the distributed control system
HITACHI LTD14 citations92
US6172615B1Jan 9, 2001
Communicator for field instruments and method of supplying power to this communicator
HITACHI LTD16 citations92
US5412643AMay 2, 1995
Duplex field bus system
HITACHI LTD20 citations92
US5757265AMay 26, 1998
Multiple-cable field bus system
HITACHI LTD37 citations86
US6996130B2Feb 7, 2006
Distributed control system and filtering method used in the distributed control system
HITACHI LTD4 citations73
US6708069B2Mar 16, 2004
Distributed control system and filtering method used in the distributed control system
HITACHI LTD8 citations73
US5717385AFeb 10, 1998
Field bus system and virtual field apparatus
HITACHI LTD16 citations73
US5663985ASep 2, 1997
Communication apparatus and method in a field bus system
HITACHI LTD12 citations73
US6957109B2Oct 18, 2005
Distributed control system and filtering method used in the distributed control system
HITACHI LTD1 citations62
US5995021ANov 30, 1999
Communicator for field instruments and method for supplying power to this communicator
HITACHI LTD5 citations62
US5184121AFeb 2, 1993
Field sensor communication method and system
HITACHI LTD6 citations62