Inventor

Hiroyo Ogawa

Inventor

Tokyo, JP

Overview

15→

Patents

1987–2011

Patent span

Electricity

Primary field (CPC H)

Patents· 15 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Bprimary

H04BTransmission50%

H01QAntennas, i.e. radio aerials11%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein7%

H04LTransmission of digital information, e.g. telegraphic communication7%

H04WWireless communication networks7%

A47KSanitary equipment4%

E05YIndexing scheme associated with subclasses e05d and e05f, relating to construction elements, electric control, power supply, power signal or transmission, user interfaces, mounting or coupling, details, accessories, auxiliary operations not otherwise provided for, application thereof4%

G02BOptical elements, systems or apparatus4%

H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner4%

H04HBroadcast communication4%

PatentTitleYear

7,872,609'Circular waveguide antenna and circular waveguide array antenna'2011 7,869,668'Method for generating carrier residual signal and its device'2011 7,804,883'Method and system for frequency hopping radio communication'2010 7,697,846'Method for changing frequency and base station in radio optical fusion communication system'2010 7,697,574'Radio communication apparatus, transmitter apparatus and receiver apparatus'2010 7,599,672'Millimeter-wave-band radio communication method in which both a modulated signal and an unmodulated carrier are transmitted to a system with a receiver having plural receiving circuits'2009 7,302,236'Radio communication method and system for performing communication among a plurality of radio communication terminals'2007 7,292,831'Radio communicate method and system'2007 7,280,824'Wireless communication system'2007 7,251,461'Wireless communications system, wireless transmitter, and wireless receiver'2007 7,177,599'Line quality characteristic evaluation system'2007 7,107,011'Interference measurement and evaluation system'2006 7,043,201'Two-way radio communication system and two-way radio communication method'2006 6,826,234'Radio communication apparatus and radio communication method'2004 4,700,348'Hot standby communications system'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987Patents assigned to NEC CORP (1)· patent assignee history

1987–2011Based in Kanagawa, JP· patent location history

2004–2011Patents assigned to NAT INST INF & COMM TECH (11)· patent assignee history

2004–2010Based in Koganei, JP· patent location history

2006–2007Patents assigned to KDDI CORP (2)· patent assignee history

2006Patents assigned to COMM RES LAB INDEPENDENT ADMIN (1)· patent assignee history

2006–2011Based in Tokyo, JP· patent location history

2010–2011Patents assigned to SUMITOMO OSAKA CEMENT CO LTD (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NAT INST INF & COMM TECH	11	2004–2011
KDDI CORP	2	2006–2007
SUMITOMO OSAKA CEMENT CO LTD	2	2010–2011
COMM RES LAB INDEPENDENT ADMIN	1	2006
NEC CORP	1	1987

Locations

Location	Patents	Span
Tokyo, JP	9	2006–2011
Koganei, JP	4	2004–2010
Kanagawa, JP	2	1987–2011