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Inventor

Yoshiyasu Tanaka

Inventor
Yokosuka, JP

Overview

5→
Patents
1988–2015
Patent span
Physics
Primary field (CPC G)

Patents· 5 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus40%
H04NPictorial communication, e.g. television40%
G01NInvestigating or analysing materials by determining their chemical or physical properties20%
PatentTitleYear
9,154,802'Emergable watermark superimposing method, emergable watermark superimposing apparatus, and emergable watermark superimposing system'20158,938,088'Method and apparatus for classifying sections of an image into a plurality of embedded areas'20156,024,922'Method of controlling an oxygen analyzer of the Hersch galvanic type'20004,927,229'Optical cable coupling adapter'19904,726,646'Optical switch'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1990Patents assigned to DU PONT (2)· patent assignee history
1988–1990Based in Yokohama, JP· patent location history
2000Based in Funabashi, JP· patent location history
2015Patents assigned to HITACHI SOLUTIONS LTD (2)· patent assignee history
2015Patents assigned to OSHIDA YUZO (2)· patent assignee history
2015Patents assigned to TANAKA YOSHIYASU (2)· patent assignee history
2015Patents assigned to YAMADA TAKAAKI (2)· patent assignee history
2015Based in Yokosuka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DU PONT21988–1990
HITACHI SOLUTIONS LTD22015
OSHIDA YUZO22015
TANAKA YOSHIYASUself22015
YAMADA TAKAAKI22015
Locations
LocationPatentsSpan
Yokosuka, JP22015
Yokohama, JP21988–1990
Funabashi, JP12000