Inventor

CHUNG KWANG HWA

KR8 patents

⚠️ This page may combine multiple inventors who share the name “CHUNG KWANG HWA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KOREA RES INST OF STANDARDS

4 patents

US7664618B2Feb 16, 2010

Trend monitoring and diagnostic analysis method and system for failure protection and for predictive maintenance of a vacuum pump

KOREA RES INST OF STANDARDS20 citations79

US7228742B2Jun 12, 2007

Pressure measuring system for vacuum chamber using ultrasonic wave

KOREA RES INST OF STANDARDS0 citations50

US7716991B2May 18, 2010

Apparatus for measuring pressure using acoustic impedance variation

KOREA RES INST OF STANDARDS1 citations49

US7569178B2Aug 4, 2009

Apparatus and method for in-situ calibration of vacuum gauge by absolute method and comparison method

KOREA RES INST OF STANDARDS0 citations45

KOREA RESERCH INST OF STANDARD

1 patent

US7653512B2Jan 26, 2010

Precision diagnostic method for the failure protection and predictive maintenance of a vacuum pump and a precision diagnostic system therefor

KOREA RESERCH INST OF STANDARD58 citations90

KOREA RES INST STANDARDS & SCI

1 patent

US5899666AMay 4, 1999

Ion drag vacuum pump

KOREA RES INST STANDARDS & SCI32 citations85

KOREA RES INST OF STANDARDS OF

1 patent

US7061184B2Jun 13, 2006

Plasma electron density measuring and monitoring device

KOREA RES INST OF STANDARDS OF9 citations63

KOREAN RES INST OF STANDARDS A

1 patent

US7456633B2Nov 25, 2008

Apparatus for and method of measuring composition and pressure of the discharged gas from ion gauge using residual gas analyzer

KOREAN RES INST OF STANDARDS A2 citations56