ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,635, issued on June 17, was assigned to EXPRO NORTH SEA Ltd. (Dyce, Great Britain).
"Downhole transmitter, systems and methods" was invented by Julian Richard Trinder (Southampton, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A transmitter for use in downhole telemetry and/or control is provided. The transmitter includes a mixer; modulator; and signal generation apparatus configured to generate a frequency modulated signal. The mixer is configured to generate an output signal based on the frequency modulated signal. A frequency spectrum of the output signal includes upper and lower sidebands disposed about a suppressed or reduced fre...