sentences:  His first patent in this field, "Three-Phase Induction Motor with Single-Phase Power Supply", , was issued 20 December 1988.He coined the words "enabler" and "phaseable" and "semi-hex" to distinguish these techniques from traditional static phase conversion, rotary phase conversion and electronic means of synthesizing three phase voltages and current.These techniques allow the use of large three phase motors up to over 100 hp where only single-phase power is available.