Inventor

Yasuo Ohtsuka

Inventor
Yokohama, JP

Overview

6→
Patents
1997–2007
Patent span
Chemistry
Primary field (CPC C)

Patents· 6 as inventor

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

C07Dprimary
C07DHeterocyclic compounds30%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations25%
C07CAcyclic or carbocyclic compounds15%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium15%
Y02PClimate change mitigation technologies in the production or processing of goods15%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–1998Patents assigned to MEIJI SEIKA CO (2)· patent assignee history
1997–2000Based in Kanagawa, JP· patent location history
2000–2007Patents assigned to MEIJI SEIKA KAISHA (4)· patent assignee history
2002–2007Based in Yokohama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MEIJI SEIKA KAISHA42000–2007
MEIJI SEIKA CO21997–1998
Locations
LocationPatentsSpan
Yokohama, JP32002–2007
Kanagawa, JP31997–2000