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Inventor

Ryoichi Otsuka

Inventor
Osaka, JP

Overview

3→
Patents
2002–2014
Patent span
Chemistry
Primary field (CPC C)

Patents· 3 as inventor

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

C07Cprimary
C07CAcyclic or carbocyclic compounds75%
C30BSingle-crystal growth25%
PatentTitleYear
8,680,325'Process for preparing 2,5-dihydroxyterephthalic acid'20147,102,028'Method for producing 3,5-di-tert-butyl-4-hydroxybenzoic acid'20066,451,109'Columnar crystals of 6-hydroxy-2-naphthoic acid and process for manufacturing the same'2002

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2002–2006Patents assigned to UENO SEIYAKU OYO KENKYUJO KK (2)· patent assignee history
2002Based in Kobe, JP· patent location history
2006Based in Nishinomiya, JP· patent location history
2014Patents assigned to KITA YUSUKE (1)· patent assignee history
2014Patents assigned to OTSUKA RYOICHI (1)· patent assignee history
2014Patents assigned to UENO FINE CHEMICAL IND (1)· patent assignee history
2014Based in Osaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
UENO SEIYAKU OYO KENKYUJO KK22002–2006
KITA YUSUKE12014
OTSUKA RYOICHIself12014
UENO FINE CHEMICAL IND12014
Locations
LocationPatentsSpan
Osaka, JP12014
Nishinomiya, JP12006
Kobe, JP12002