This inventor holds 17 USPTO granted patents and 1 EPO patent. Top assignee: Murata Manufacturing Co., Ltd.. Active years: 2001-2010.
Location History:
- Nagaokakyo, JP (2003)
- Lausanne, CH (2003 - 2004)
- Moriyama, JP (2001 - 2010)
Company Filing History:
Years Active: 2001-2010
Title: Takuya Sawada: Innovator in Piezoelectric Ceramics
Introduction
Takuya Sawada is a prominent inventor based in Moriyama, Japan. He has made significant contributions to the field of piezoelectric ceramics, holding a total of 17 patents. His work focuses on enhancing the performance and characteristics of piezoelectric materials, which are essential in various electronic applications.
Latest Patents
Among his latest patents are innovations related to piezoelectric ceramics and resonators. One notable patent describes a piezoelectric ceramic whose resonance frequency temperature characteristic can be easily adjusted. This invention includes first and second parts that can be alternately stacked in layers. Each part is composed of a compound with a bismuth layer structure, such as a complex oxide containing at least strontium (Sr), bismuth (Bi), and niobium (Nb). The differing degrees of c-axis orientation in these parts allow for the resonance frequency temperature characteristics to be adjusted effectively.
Another significant patent involves a piezoelectric ceramic composition that includes a bismuth layered compound containing Sr, Bi, Nb, and a metal element other than Bi with a valence of 3. This composition meets specific relational expressions that ensure the bismuth content is equal to or less than the stoichiometric value, making it suitable for piezoelectric ceramic elements with a sufficient Q-factor for practical use.
Career Highlights