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Inventor

Kazuyuki Wakasugi

Inventor
Yokohama, JP

Overview

3→
Patents
1981–1990
Patent span
Performing operations
Primary field (CPC B)

Patents· 3 as inventor

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

B41Mprimary
B41MPrinting, duplicating, marking, or copying processes50%
C07CAcyclic or carbocyclic compounds17%
C07DHeterocyclic compounds17%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments17%
PatentTitleYear
4,912,259'Pentadiene amino compound'19904,612,558'Fluoran compounds'19864,271,075'Process for producing 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1990Patents assigned to HODOGAYA CHEMICAL CO LTD (3)· patent assignee history
1981–1986Based in Yokohama, JP· patent location history
1990Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HODOGAYA CHEMICAL CO LTD31981–1990
Locations
LocationPatentsSpan
Yokohama, JP21981–1986
Tokyo, JP11990