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Inventor

Chikanori Tomioka

Inventor
Ohtsu, JP

Overview

2→
Patents
1980–1991
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 preparations33%
C07KPeptides33%
A61KPreparations for medical, dental or toiletry purposes17%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
PatentTitleYear
5,000,953'Biologically active substance'19914,234,570'Proteinic active substances'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980Patents assigned to KAKENYAKU KAKO KK (1)· patent assignee history
1980–1991Based in Ohtsu, JP· patent location history
1991Patents assigned to KAKEN CHEMICAL CO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KAKEN CHEMICAL CO11991
KAKENYAKU KAKO KK11980
Locations
LocationPatentsSpan
Ohtsu, JP21980–1991