Location History:
- Shiga, JP (1993 - 1994)
- Nagoakakyo, JP (1994)
- Shiga-ken, JP (1998 - 2002)
- Yasu, JP (2008 - 2012)
- Nagaokakyo, JP (1991 - 2017)
Company Filing History:
17 out of 13,692 
1 out of 132 
1 out of 150 Years Active: 1991-2017
Title: **The Innovative Journey of Nobuyuki Wada**
Introduction
Nobuyuki Wada, an accomplished inventor hailing from Shiga-ken, Japan, has made significant contributions to the field of electrical engineering. With a remarkable portfolio of 19 patents, Wada is particularly renowned for his work on multilayer ceramic capacitors and piezoelectric elements, showcasing his deep expertise and innovative spirit.
Latest Patents
Wada's latest patents highlight his pioneering advancements in capacitor and piezoelectric technology. One of his notable inventions, the *Multilayer Ceramic Capacitor and Method for Producing the Same*, involves a dielectric ceramic that forms the dielectric layers of the capacitor. This innovative material includes a Ba and Ti containing perovskite compound, along with specified ratios of Ca, R (where R represents a rare earth element like La), M (which denotes Mn and similar elements), and Si. Key specifications include a Ca content of 0.5 to 2.5 molar parts, R content of 0.5 to 4 molar parts, M content of 0.5 to 2 molar parts, and Si content ranging from 1 to 4 molar parts, based on 100 molar parts of Ti. Additionally, in perovskite crystal grains, the Ca diffusion depth is maintained at 10% or less of the average grain size, with a higher concentration of Ca in the Ca diffusion region compared to the center of the crystal grains.
Another significant invention by Wada is the *Method of Manufacturing a Piezoelectric Element*, which describes a process for creating a piezoelectric ceramic body that contains an internal electrode. This ceramic body is primarily composed of a perovskite complex oxide that includes alkali metal niobate-based compounds containing elements such as K, Li, and Na. To enhance performance, the internal electrode is crafted from base metal materials, such as Ni or Cu, and is produced through co-sintering in a reducing atmosphere.
Career Highlights
Wada's career is marked by his association with esteemed companies, notably Murata Manufacturing Co., Ltd. and Murata Mfg. Co., Ltd. His ingenuity and expertise have played pivotal roles in the development of advanced electronic components, contributing to the company’s reputation for innovation in the industry.
Collaborations
Throughout his career, Wada has collaborated with talented individuals such as Yukio Hamaji and Takashi Hiramatsu. These partnerships have further enriched the innovative landscape of the projects they undertook, reflecting a strong teamwork dynamic that fosters creativity and excellence.
Conclusion
Nobuyuki Wada exemplifies the spirit of innovation and discovery in the field of electrical engineering. His extensive patent portfolio and pioneering inventions serve as a testimony to his dedication and expertise. As he continues to push the boundaries of technology, Wada remains a prominent figure in advancing the capabilities of electronic components.