| TOKUSEN KOGYO CO., LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20100236211 | RUBBER-PRODUCT-REINFORCING STEEL CORD AND METHOD FOR MANUFACTURING THE SAME - A single-layered rubber-product-reinforcing steel cord with good rubber penetration properties, excellent fatigue resistance, and small low-load stretch is obtained. All of wires | 09-23-2010 |
| 20090103207 | ROTOR HUB, SPINDLE MOTOR AND HARD DISK DRIVE - In a method for manufacturing a rotor hub for use in a spindle motor, free-cutting stainless steel is used as a material of the rotor hub. A slug of free-cutting stainless steel is subjected to a plastic working to form a disk mounting portion and a cylindrical surface positioned radially inwardly of the disk mounting portion. Then, a cylindrical disk fitting surface is formed by machining substantially the entirety of the cylindrical surface. The rotor hub contains A-type inclusions appearing in a cross section taken along a center axis of the disk mounting portion. The A-type inclusions are oriented in directions different than the center axis. | 04-23-2009 |
