Inventor
SAKATA KAZUHIRO
JP25 patents
⚠️ This page may combine multiple inventors who share the name “SAKATA KAZUHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
10 patentsUS4367811AJan 11, 1983
Elevator control system
HITACHI LTD40 citations92
US4350225ASep 21, 1982
Elevator control system
HITACHI LTD43 citations92
US4330838AMay 18, 1982
Elevator test operation apparatus
HITACHI LTD49 citations92
US5526256AJun 11, 1996
Passenger conveyer control apparatus
HITACHI LTD44 citations91
US4958707ASep 25, 1990
Elevator control system
HITACHI LTD51 citations89
US5083653AJan 28, 1992
Control apparatus for passenger conveyer
HITACHI LTD20 citations80
US4387436AJun 7, 1983
Method and apparatus for detecting elevator car position
HITACHI LTD23 citations80
US4326606AApr 27, 1982
Apparatus for controlling rescue operation of an elevator
HITACHI LTD18 citations74
US4341287AJul 27, 1982
Elevator control apparatus
HITACHI LTD17 citations73
US4756389AJul 12, 1988
Apparatus for detecting a position of a cage in a hydraulic elevator
HITACHI LTD6 citations62
NEC CORP
9 patentsUS6343316B1Jan 29, 2002
Cooperative work support system
NEC CORP113 citations98
US7567800B2Jul 28, 2009
Content delivery system
NEC CORP29 citations91
US7177907B2Feb 13, 2007
Message reception device, message reception method, and program for receiving message is recorded
NEC CORP11 citations84
US6377977B1Apr 23, 2002
Method for loading application program and opening files in host terminals before collaborating on a joint project
NEC CORP13 citations74
US7079950B2Jul 18, 2006
Location information conversion device, control method therefor, location information providing system using them, and control method therefor
NEC CORP6 citations73
US7305428B2Dec 4, 2007
Retrieval device, retrieval server, and retrieval system, as well as retrieval method and computer program with greater extent of retrieval conditions
NEC CORP6 citations63
US7228435B2Jun 5, 2007
Program executing method in service system and program executing apparatus for the same
NEC CORP1 citations52
US7197538B2Mar 27, 2007
Time-dependent message delivery method and system
NEC CORP1 citations52
US7965831B2Jun 21, 2011
Telephone control device, telephone control method, telephone control program, telephone terminal, telephone calling method, telephone calling program and telephone control system
NEC CORP0 citations41