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Inventor

Shigeharu Onozuka

Inventor
Tokyo, JP

Overview

1→
Patents
1991
Patent span
Chemistry
Primary field (CPC C)

Patents· 1 as inventor

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

C08Fprimary
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds50%
G02BOptical elements, systems or apparatus50%
PatentTitleYear
5,023,305'Oxygen-permeable hard contact lens material with excellent impact resistance'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to HOYA CORP (1)· patent assignee history
1991Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HOYA CORP11991
Locations
LocationPatentsSpan
Tokyo, JP11991