This inventor holds 23 USPTO granted patents and 4 EPO patents, primarily in Electronic Materials. Top assignees: Murata Manufacturing Co., Ltd., Murata Mfg. Co., Ltd., Senju Metal Industry Co., Ltd.. Active years: 1987-2012.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kyoto, JP (1987 - 1994)
- Omihachiman, JP (2000 - 2012)
Company Filing History:
22 out of 13,796 
1 out of 132 
1 out of 338 Years Active: 1987-2012
Areas of Expertise:
Title: Innovations of Shizuharu Watanabe in Solder Technology and Ceramic Capacitors
Introduction
Shizuharu Watanabe, based in Omihachiman, Japan, is a prominent inventor specializing in the field of materials science and electronic components. With an impressive portfolio of 23 patents, Watanabe has significantly contributed to the development and innovation of solder pastes and ceramics used in various electronic applications.
Latest Patents
One of his latest notable inventions involves a lead-free solder paste, which comprises a solder alloy powder and a flux. This solder paste boasts a minimal volumetric expansion of at most 0.5% during melting, enhancing reliability in high-temperature soldering applications. The flux formulation includes bisphenol A epoxy resin and a curing agent derived from carboxylic anhydride and dicarboxylic acid.
Additionally, Watanabe has developed a patented resistive paste used in monolithic ceramic capacitors. This invention focuses on forming a resistive electrode layer, contributing to the external electrode of the capacitor. While baking the resistive paste—which contains indium tin oxide (ITO), glass frit, and an organic vehicle—issues such as blisters or reduced denseness may arise, these concerns can be mitigated by incorporating a densification-promoting metal or oxide alongside a densification-preventing metal oxide.
Career Highlights
Throughout his career, Shizuharu Watanabe has made significant strides while working with reputable companies such as Murata Manufacturing Co., Ltd. and Senju Metal Industry Co., Ltd. His contributions have led to advancements in electronic components that are crucial in various technological applications.
Collaborations
Watanabe has collaborated with several talented individuals in his field, including Masahiro Kubota and Michiaki Iha. These partnerships have played a vital role in the evolution of his innovations and the successful realization of multiple patents.
Conclusion
Shizuharu Watanabe stands out as a prolific inventor dedicated to advancing solder technology and ceramic capacitors. His extensive patent portfolio emphasizes his innovative spirit and commitment to enhancing electronic component functionality and reliability. Through his ongoing efforts, Watanabe continues to shape the landscape of materials science in the field of electronics.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile