Woodcock, Washburn, Kurtz, Mackiewicz & Norris
Ultrasonic probe
 The ultrasonic probe of this invention contains a uniaxially elongated polymer piezoelectric element in which the piezoelectric element provided at the both sides with a thin layer electrode is disposed such that at least one of the electrodes is divided into long and small electrode portions to form a unit element and the unit elements are arranged in a direction at an angle in the scope ranging from 45.degree. to 135.degree. with respect to the direction in which the piezoelectric material is uniaxially elongated. The ultrasonic probe having the aforesaid structure is constructed such that each of the unit elements undergoes no adverse influence from the adjacent unit elements so that it permits a high resolving power without any noise acoustic waves generated. 
Kureha Kagaku Kogyo Kabushiki Kaisha
B Y
B06B Y10S
inventional additional
Hiroshi Naohiro
Obara Murayama