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Inventor profile of:

Yongjun CHENG

City:

Lanzhou

Country:

China

Published Applications:

1

Last publication date:

2020-12-24

Recent patent applications by CHENG Yongjun

Yongjun CHENG from Lanzhou, CN has applied for patents for these inventions. The list has both pending applications and granted patents:

#1 | 2020-12-24

US20200402783A1

NOVEL PARTIAL-PRESSURE MASS SPECTROMETER CALIBRATION DEVICE AND METHOD

InventorID:

2945752 ⎘