Inventor

Hirotatsu Kojima

Inventor
Tokyo, JP

Overview

15→
Patents
1999–2020
Patent span
Chemistry
Primary field (CPC C)

Patents· 15 as inventor

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

C07Dprimary
C07DHeterocyclic compounds34%
Y10TTechnical subjects covered by former us classification22%
G01NInvestigating or analysing materials by determining their chemical or physical properties12%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments10%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations7%
A61KPreparations for medical, dental or toiletry purposes5%
C09KMaterials for miscellaneous applications, not provided for elsewhere5%
Y02PClimate change mitigation technologies in the production or processing of goods2%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2015Patents assigned to NAGANO TETSUO (10)· patent assignee history
1999–2020Based in Tokyo, JP· patent location history
2002–2004Patents assigned to DAIICHI PURE CHEMICALS CO LTD (4)· patent assignee history
2011–2015Patents assigned to KOJIMA HIROTATSU (4)· patent assignee history
2013–2020Patents assigned to UNIV TOKYO (6)· patent assignee history
2013Patents assigned to KIYOSE KAZUKI (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NAGANO TETSUO101999–2015
UNIV TOKYO62013–2020
DAIICHI PURE CHEMICALS CO LTD42002–2004
KOJIMA HIROTATSUself42011–2015
KIYOSE KAZUKI22013
Locations
LocationPatentsSpan
Tokyo, JP151999–2020