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Inventor

Yasuyuki Katoh

Inventor
Shizuoka, JP

Overview

2→
Patents
1989–1991
Patent span
Human necessities
Primary field (CPC A)

Patents· 2 as inventor

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

A61Pprimary
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations40%
A61KPreparations for medical, dental or toiletry purposes20%
C07CAcyclic or carbocyclic compounds20%
C07DHeterocyclic compounds20%
PatentTitleYear
5,051,509'Novel quinolonecarboxylic acid derivatives'19914,855,497'Novel diamine derivatives'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989Patents assigned to CHUGAI SEIYAKU KAUBSHIKI KAISH (1)· patent assignee history
1989Based in Kanagawa, JP· patent location history
1991Patents assigned to CHUGAI PHARMACEUTICAL CO LTD (1)· patent assignee history
1991Based in Shizuoka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHUGAI PHARMACEUTICAL CO LTD11991
CHUGAI SEIYAKU KAUBSHIKI KAISH11989
Locations
LocationPatentsSpan
Shizuoka, JP11991
Kanagawa, JP11989