Chengfa YANG

City:

Beijing

Country:

China

Published Applications:

Last publication date:

2021-06-10

Top Assignees for applications by Chengfa YANG

The entities that hold a legal rights for patent applications filed by inventor YANG Chengfa:

Chengfa YANG from Beijing, CN has applied for patents for these inventions. The list has both pending applications and granted patents:

Mask, preparation method and operation method thereof

Method and apparatus for calculating equivalent mechanical parameters of film layer etching region

InventorID:

3047270 ⎘