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Inventor

Sadao Yoshizawa

Inventor
Hokkaido, JP

Overview

4→
Patents
1994–2001
Patent span
Performing operations
Primary field (CPC B)

Patents· 4 as inventor

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

B21Bprimary
B21BRolling of metal100%
PatentTitleYear
6,237,387'Entrance roller guide apparatus'20015,970,772'Positioning control device for guide apparatus'19995,412,970'Guiding method for steel materials to be rolled and roller guide system therefor'19955,363,682'Four-roller type sizing mill apparatus for producing round steel rods'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–2001Patents assigned to KOTOBUKI SANGYO (4)· patent assignee history
1994Patents assigned to KAWASAKI STEEL CO (1)· patent assignee history
1994–2001Based in Hokkaido, JP· patent location history
1995Based in Sapporo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KOTOBUKI SANGYO41994–2001
KAWASAKI STEEL CO11994
Locations
LocationPatentsSpan
Hokkaido, JP31994–2001
Sapporo, JP11995