Inventors list |
Assignees list |
Classification tree browser |
Top 100 Inventors |
Top 100 Assignees |
OPTNICS PRECISION CO., LTD.
| OPTNICS PRECISION CO., LTD. Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20110056873 | SIEVE, SIFTING DEVICE, SOLDER BALLS, AND METHOD OF SIFTING SPHERICAL PARTICLES - This invention aims to enhance efficiency of a sieve and to greatly improve productivity of a sifting operation. There is provided a sieve comprising a metal plate including long holes, wherein the long holes are plurally provided such that lines extending in length directions thereof cross one another. | 03-10-2011 |