Electricity: measuring and testing – Of geophysical surface or subsurface in situ – With radiant energy or nonconductive-type transmitter
Reexamination Certificate
2006-06-06
2006-06-06
Ledynh, Bot (Department: 2862)
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
With radiant energy or nonconductive-type transmitter
C324S339000
Reexamination Certificate
active
07057392
ABSTRACT:
A resistivity tool has a body with at lest one pair of grooves on its exterior oriented orthogonal to the tool axis. A coil antenna is oriented orthogonal to the grooves in a hole intersecting the grooves and oriented orthogonal to the tool axis. The antenna and an antenna core define a plurality of small antenna loops.
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patent: 5138263 (1992-08-01), Towle
patent: 5491488 (1996-02-01), Wu
patent: 5530358 (1996-06-01), Wisler et al.
patent: 6297639 (2001-10-01), Clark et al.
patent: 6577129 (2003-06-01), Thompson et al.
Fang Sheng
Signorelli John
Tabarovsky Leonty
Tchakarov Boris
Wang Tsili
Aurora Reena
Baker Hughes Incorporated
Ledynh Bot
Madan Mossman & Sriram P.C.
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