Mingdong Xu — 7 Patents at Evolution Engineering

Issued Patents 2017

Showing 1–7 of 7 patents

Patent #	Title	Co-Inventors	Date
9771792	Method and apparatus for multi-channel downhole electromagnetic telemetry	Jili Liu, David A. Switzer, Aaron W. Logan	2017-09-26
9765615	Optimizing electromagnetic telemetry transmissions	Jili Liu, Aaron W. Logan, David A. Switzer, Monica E. Varga, Mojtaba Kazemi Miraki	2017-09-19
9752429	Downhole electromagnetic and mud pulse telemetry apparatus	David A. Switzer, Jili Liu, Aaron W. Logan	2017-09-05
9719345	Electromagnetic communications system and method for a drilling operation	David A. Switzer, Jili Liu, Mojtaba Kazemi Miraki, Aaron W. Logan	2017-08-01
9664038	Method and system for transmitting a data frame of an electromagnetic telemetry signal to or from a downhole location	David A. Switzer, Jili Liu, Aaron W. Logan	2017-05-30
9605535	Integrated downhole system with plural telemetry subsystems	Aaron W. Logan, David A. Switzer, Jili Liu, Justin C. Logan	2017-03-28
9574441	Downhole telemetry signal modulation using pressure pulses of multiple pulse heights	Jili Liu, David A. Switzer, Aaron W. Logan	2017-02-21