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Inventor

Keiji Murakami

Inventor
Kanagawa, JP

Overview

8→
Patents
1979–2015
Patent span
Physics
Primary field (CPC G)

Patents· 8 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus25%
H04WWireless communication networks25%
G10HElectrophonic musical instruments17%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
C03CChemical composition of glasses, glazes or vitreous enamels8%
H04LTransmission of digital information, e.g. telegraphic communication8%
PatentTitleYear
9,031,041'Mobile communication method and base station'20158,983,473'Radio base station and handover control method in a multi-system environment'20158,903,401'Radio base station and connection establishment control method'20147,261,827'Method of processing end portions of optical fibers and optical fibers having their end portions processed'20076,846,111'Method of processing optical fiber end portion'20056,491,442'Optical fiber connector in which an optical fiber is protected even when connection is not made'20024,207,791'Automatic tuning device'19804,176,576'Electronic musical instrument'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1980Patents assigned to KAWAI MUSICAL INSTR MFG CO (2)· patent assignee history
1979–1980Based in Okegawa, JP· patent location history
2002–2007Patents assigned to JAPAN AVIATION ELECTRON (3)· patent assignee history
2005Based in Ichihara, JP· patent location history
2007Based in Tokyo, JP· patent location history
2014–2015Patents assigned to KYOCERA CORP (3)· patent assignee history
2014–2015Patents assigned to MURAKAMI KEIJI (3)· patent assignee history
2014–2015Patents assigned to FUJITO KYOKO (2)· patent assignee history
2014–2015Based in Kanagawa, JP· patent location history
2015Based in Kawasaki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
JAPAN AVIATION ELECTRON32002–2007
KYOCERA CORP32014–2015
MURAKAMI KEIJIself32014–2015
FUJITO KYOKO22014–2015
KAWAI MUSICAL INSTR MFG CO21979–1980
Locations
LocationPatentsSpan
Kanagawa, JP22014–2015
Okegawa, JP21979–1980
Kawasaki, JP12015
Tokyo, JP12007
Ichihara, JP12005