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Inventor

Youichi Ushiyama

Inventor
Suwa, JP

Overview

1→
Patents
1998
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 bonds33%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments33%
G02BOptical elements, systems or apparatus33%
PatentTitleYear
5,708,049'Colored contact lens and method for producing the same'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998Patents assigned to SEIKO EPSON CORP (1)· patent assignee history
1998Based in Suwa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SEIKO EPSON CORP11998
Locations
LocationPatentsSpan
Suwa, JP11998