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Inventor

Ken Tomioka

Inventor
Yokohama, JP

Overview

6→
Patents
1993–2000
Patent span
Human necessities
Primary field (CPC A)

Patents· 6 as inventor

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

A61Bprimary
A61BDiagnosis63%
G02BOptical elements, systems or apparatus38%
PatentTitleYear
6,033,074'Subjective eye refractive power measuring apparatus'20005,801,807'Ophthalmic illumination device having adjustable transmittance member and microscope for operation using the same'19985,668,661'Microscope'19975,661,598'Optical instrument'19975,424,788'Slit lamp microscope'19955,250,966'Ophthalmic photographing apparatus having a displacement measurement unit'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993–2000Patents assigned to NIKON CORP (6)· patent assignee history
1993–1995Based in Zushi, JP· patent location history
1997–2000Based in Yokohama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NIKON CORP61993–2000
Locations
LocationPatentsSpan
Yokohama, JP41997–2000
Zushi, JP21993–1995