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Inventor

Yoshito Kawai

Inventor
Chiba, JP

Overview

3→
Patents
1986–1989
Patent span
Performing operations
Primary field (CPC B)

Patents· 3 as inventor

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

B21Bprimary
B21BRolling of metal40%
B23KSoldering or unsoldering40%
G02BOptical elements, systems or apparatus20%
PatentTitleYear
4,806,724'Laser beam machining device'19894,741,193'Method and apparatus for cooling rolling mill rolls'19884,623,777'Apparatus for butt welding steel strips by using a laser beam in a steel strip-processing line'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1989Patents assigned to KAWASAKI STEEL CO (3)· patent assignee history
1986–1989Based in Chiba, JP· patent location history
1988Patents assigned to HITACHI LTD (1)· patent assignee history
1989Patents assigned to MIYAMA CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KAWASAKI STEEL CO31986–1989
HITACHI LTD11988
MIYAMA CO LTD11989
Locations
LocationPatentsSpan
Chiba, JP31986–1989