The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 2010
Filed:
Aug. 23, 2007
Tsutomu Yamate, Yokohama, JP;
Hiroshi Inoue, Yokohama, JP;
Jiro Takeda, Machida, JP;
Yukio Sudo, Machida, JP;
Emmanuel Desroques, Tokyo, JP;
Satoru Umemoto, Kawasaki, JP;
Tsutomu Yamate, Yokohama, JP;
Hiroshi Inoue, Yokohama, JP;
Jiro Takeda, Machida, JP;
Yukio Sudo, Machida, JP;
Emmanuel Desroques, Tokyo, JP;
Satoru Umemoto, Kawasaki, JP;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A downhole tool, configured to be suspended in a borehole traversing an earth formation, includes a downhole data acquisition system placed in the tool body and electrically connected to an electric power generator at the formation surface. The downhole data acquisition system includes a sensor for detecting local conditions in the borehole, and a transducer for transducing the voltage of an input signal from high to low or low to high. The transducer having a gallium nitride or silicon carbide based discrete semiconductor device.