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Inventor

Takamasa Kawai

Inventor
Ogaki, JP

Overview

3→
Patents
1993–2021
Patent span
Human necessities
Primary field (CPC A)

Patents· 3 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 preparations20%
B01DSeparation20%
C07DHeterocyclic compounds20%
E21BEarth or rock drilling20%
F16LPipes20%
PatentTitleYear
11,071,945Filter membrane202110,900,595Threaded joint for oil well tubing20215,210,224'Process for preparing lankacidin carbamate derivatives'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993Patents assigned to TAKEDA CHEMICAL INDUSTRIES LTD (1)· patent assignee history
1993Based in Sanda, JP· patent location history
2021Patents assigned to IBIDEN CO LTD (1)· patent assignee history
2021Patents assigned to JFE STEEL CORP (1)· patent assignee history
2021Based in Ogaki, JP· patent location history
2021Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
IBIDEN CO LTD12021
JFE STEEL CORP12021
TAKEDA CHEMICAL INDUSTRIES LTD11993
Locations
LocationPatentsSpan
Ogaki, JP12021
Tokyo, JP12021
Sanda, JP11993