Lei PI

City:

Beijing

Country:

China

Published Applications:

Last publication date:

2025-11-27

Top Assignees for applications by Lei PI

The entities that hold a legal rights for patent applications filed by inventor PI Lei:

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

CALIBRATION PLATE FOR DETECTING A SUBSURFACE DEPTH AND PREPARATION METHOD THEREFOR

Composite measurement system for measuring nanometer displacement

InventorID:

5616490 ⎘