Inventor
SHIDA MASAAKI
27 patents
⚠️ This page may combine multiple inventors who share the name “SHIDA MASAAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
17 patentsUS6031863AFeb 29, 2000
Wireless LAN system
HITACHI LTD143 citations97
US6014406AJan 11, 2000
Frequency-hopped wireless communication system and mobile wireless terminal
HITACHI LTD97 citations97
US6570490B1May 27, 2003
Contactless IC card
HITACHI LTD61 citations96
US6508400B1Jan 21, 2003
Automatic identification equipment and IC cards
HITACHI LTD61 citations96
US7167712B2Jan 23, 2007
Method, system, and apparatus for detecting a position of a terminal in a network
HITACHI LTD39 citations92
US7139583B2Nov 21, 2006
Positioning system and method based on time difference of arrival
HITACHI LTD24 citations92
US6963269B2Nov 8, 2005
Contactless IC card
HITACHI LTD17 citations92
US6010075AJan 4, 2000
Moving object identification method and apparatus
HITACHI LTD25 citations92
US7817741B2Oct 19, 2010
MIMO wireless data communication system, MIMO wireless data communication method and MIMO wireless data communication apparatus
HITACHI LTD8 citations84
US7493092B2Feb 17, 2009
Wireless transceiver having plural transmission methods
HITACHI LTD15 citations84
US7016665B2Mar 21, 2006
Charging method and terminal equipment in the information and communication network system
HITACHI LTD11 citations83
US6675007B2Jan 6, 2004
Charging method and terminal equipment in the information and communication network system
HITACHI LTD14 citations83
US6527177B1Mar 4, 2003
Automatic identification equipment and IC cards
HITACHI LTD9 citations74
US8363634B2Jan 29, 2013
Wireless communication method, wireless communication apparatus and access point apparatus
HITACHI LTD3 citations63
US7773686B2Aug 10, 2010
MIMO wireless data transmission system
HITACHI LTD5 citations63
US7353032B2Apr 1, 2008
Method, system, and apparatus for detecting a position of a terminal in a network
HITACHI LTD5 citations63
US7660288B2Feb 9, 2010
Radio communication device
HITACHI LTD0 citations52
SHIDA MASAAKI
3 patentsHAYASE SHIGENORI
2 patentsUS8494076B2Jul 23, 2013
MIMO wireless data communication system, MIMO wireless data communication method and MIMO wireless data communication apparatus
HAYASE SHIGENORI2 citations60
US8155219B2Apr 10, 2012
Apparatus and method for peak suppression in wireless communication systems
HAYASE SHIGENORI0 citations39