Naoki Doi

City:

Tokyo

Country:

Japan

Published Applications:

Last publication date:

2013-02-14

Top Assignees for applications by Naoki Doi

The entities that hold a legal rights for patent applications filed by inventor Doi Naoki:

NIPPON STEEL & SUMITOMO METAL CORPORATION 1 Tokyo, Japan

Recent patent applications by Doi Naoki

Naoki Doi from Tokyo, JP has applied for patents for these inventions. The list has both pending applications and granted patents:

#1 | 2013-02-14

US20130037162A1

Chemistry; metallurgy

Thick welded steel pipe excellent in low temperature toughness, manufacturing method of thick welded steel pipe excellent in low temperature toughness, and steel plate for manufacturing thick welded steel pipe

#2 | 2009-04-09

US20090092514A1

Performing operations; transporting

Steel pipe for high strength line pipe superior in strain aging resistance and steel plate for high strength line pipe and methods of production of the same

InventorID:

83770 ⎘