LexDanaLexDanabeta
Inventor

Keizo Oka

Inventor
Marugame, JP

Overview

3→
Patents
1991–1994
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.

C30Bprimary
C30BSingle-crystal growth29%
B29CShaping or joining of plastics14%
C01BNon-metallic elements14%
C03BManufacture, shaping, or supplementary processes14%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds14%
C08JWorking-up14%
PatentTitleYear
5,290,497'Process for producing molded articles of polyimide precursor'19945,064,631'Process for preparation of aluminum borate whisker'19915,061,468'Process for preparation of aluminum borate whisker'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to SHIKOKU CHEM (2)· patent assignee history
1991Based in Marugame, JP· patent location history
1994Patents assigned to CHISSO CORP (1)· patent assignee history
1994Based in Chiba, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SHIKOKU CHEM21991
CHISSO CORP11994
Locations
LocationPatentsSpan
Marugame, JP21991
Chiba, JP11994