| CITIZEN SEIMITSU CO., LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20080233841 | DISK-SHAPED SUBSTRATE MANUFACTURING METHOD - The disk-shaped substrate manufacturing method is provided with: generating an air stream downward from an upper area during grinding a disk-shaped substrate in a grinding apparatus; arranging the grinding apparatus on an upper floor face of a floor and arranging water on a lower floor face of the floor, the upper floor face being made of a board having penetration holes or a mesh member, and the lower floor face supporting the upper floor face so as to be located above the lower floor face with a distance; and guiding dust made by the grinding apparatus to the water by use of the air stream. | 09-25-2008 |
| 20080223402 | DISK-SHAPED SUBSTRATE MANUFACTURING METHOD AND WASHING APPARATUS - The disk-shaped substrate manufacturing method is provided with: scrub-washing a first surface and a second surface of a disk-shaped substrate by respectively using a first porous roller and a second porous roller that have a cylindrical shape and are rotationally driven. The process of the scrub-washing determines a distance between axes of the first porous roller and the second porous roller that sandwich the disk-shaped substrate in between, and performs scrub-washing while the determined distance between the axes is under control. | 09-18-2008 |
| 20080200097 | POLISHING METHOD AND POLISHING APPARATUS - The polishing method of a disk-shaped substrate for polishing an outer circumference | 08-21-2008 |
