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Inventor

Osami Ishida

Inventor
Kamakura, JP

Overview

5→
Patents
1982–1997
Patent span
Electricity
Primary field (CPC H)

Patents· 5 as inventor

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

H01Pprimary
H01PWaveguides44%
H04BTransmission33%
H01QAntennas, i.e. radio aerials22%
PatentTitleYear
5,684,492'Antenna device having a band pass filter'19975,434,579'Inverted F antenna with non-contact feeding'19954,607,240'Directional coupler'19864,490,696'Crossed waveguide type polarization separator'19844,345,255'Antenna feed system'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982Patents assigned to KOKUSAI DENSHIN DENWA CO LTD (1)· patent assignee history
1982–1997Based in Kamakura, JP· patent location history
1984–1997Patents assigned to MITSUBISHI ELECTRIC CORP (4)· patent assignee history
1986–1995Based in Kanagawa, JP· patent location history
1995Patents assigned to NIPPON TELEGRAPH & TELEPHONE CORP. (1)· patent assignee history
1995Patents assigned to TELEPHONE CORP (1)· patent assignee history
1997Patents assigned to NIPPON TELEGRAPH & TELEPHONE (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MITSUBISHI ELECTRIC CORP41984–1997
KOKUSAI DENSHIN DENWA CO LTD11982
NIPPON TELEGRAPH & TELEPHONE11997
NIPPON TELEGRAPH & TELEPHONE CORP.11995
TELEPHONE CORP11995
Locations
LocationPatentsSpan
Kamakura, JP31982–1997
Kanagawa, JP21986–1995