Inventor

Motohiro Oka

Inventor
Tokyo, JP

Overview

13→
Patents
1991–2002
Patent span
Performing operations
Primary field (CPC B)

Patents· 13 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus18%
B29CShaping or joining of plastics11%
B29DProducing particular articles from plastics or from substances in a plastic state11%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form11%
C08JWorking-up11%
Y10TTechnical subjects covered by former us classification11%
A61BDiagnosis8%
H01JElectric discharge tubes or discharge lamps5%
B01LChemical or physical laboratory apparatus for general use3%
C08LCompositions of macromolecular compounds3%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1992Patents assigned to SHOWA PHARM CHEM IND (3)· patent assignee history
1991–2002Based in Tokyo, JP· patent location history
1993–2002Patents assigned to DAINIPPON PRINTING CO LTD (10)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DAINIPPON PRINTING CO LTD101993–2002
SHOWA PHARM CHEM IND31991–1992
Locations
LocationPatentsSpan
Tokyo, JP131991–2002