Inventor
NIWA MASARU
JP3 patents
Patents
3 patentsUS5167149ADec 1, 1992
Apparatus and method for detecting the presence of gas in a borehole flow stream
SCHLUMBERGER TECHNOLOGY CORP152 citations97
US5201220AApr 13, 1993
Apparatus and method for detecting the presence of gas in a borehole flow stream
SCHLUMBERGER TECHNOLOGY CORP144 citations96
US6111340AAug 29, 2000
Dual-mode thickness-shear quartz pressure sensors for high pressure and high temperature applications
SCHLUMBERGER TECHNOLOGY CORP26 citations92