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Inventor

Keiko Shiokawa

Inventor
Azumino, JP

Overview

2→
Patents
1988–2021
Patent span
Physics
Primary field (CPC G)

Patents· 2 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus25%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them25%
G11BInformation storage based on relative movement between record carrier and transducer25%
H04NPictorial communication, e.g. television25%
PatentTitleYear
10,895,719Projection system and projector20214,760,481'Thin film magnetic head having an improved coil'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988Patents assigned to HITACHI LTD (1)· patent assignee history
1988Based in Higashiyamato, JP· patent location history
2021Patents assigned to SEIKO EPSON CORP (1)· patent assignee history
2021Based in Azumino, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD11988
SEIKO EPSON CORP12021
Locations
LocationPatentsSpan
Azumino, JP12021
Higashiyamato, JP11988