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Inventor

Kohtaroh Nagahara

Inventor
Aizuwakamatsu, JP

Overview

2→
Patents
1998–2003
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 2 as inventor

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

F28Fprimary
F28FDetails of heat-exchange and heat-transfer apparatus, of general application40%
B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling20%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
Y10TTechnical subjects covered by former us classification20%
PatentTitleYear
6,662,860'Heat transfer pipe for liquid medium having grooved inner surface and heat exchanger employing the same'20035,704,424'Heat transfer tube having grooved inner surface and production method therefor'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998Patents assigned to MITSUBISHI SHINDO KK (1)· patent assignee history
1998–2003Based in Aizuwakamatsu, JP· patent location history
2003Patents assigned to JAPAN STEEL WORKS LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
JAPAN STEEL WORKS LTD12003
MITSUBISHI SHINDO KK11998
Locations
LocationPatentsSpan
Aizuwakamatsu, JP21998–2003