Location History:
- Tokyo, JA (1978)
- Nikahomachi, JP (1981)
Company Filing History:
Years Active: 1978-1981
Title: Kazunari Yonezuka: Innovator in Heating Element Technology
Introduction
Kazunari Yonezuka is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of heating elements, particularly through his innovative use of ceramic materials. With a total of 2 patents to his name, Yonezuka continues to push the boundaries of technology in his field.
Latest Patents
Yonezuka's latest patents include a heating element made of PTC ceramic material. This invention is designed for air heaters and similar applications, featuring a ceramic material in a honeycomb structure. The heating element is notable for its high heat generation capability compared to conventional heating elements of the same size. The preferred ceramic materials for this heating element have a temperature coefficient of electrical resistance ranging from 5 to 20% per degree Celsius. These materials consist of 38.7 to 47.3 molar % of BaO, 2.5 to 11 molar % of PbO, 49.8 to 50% of TiO2, and specific amounts of a semiconductor forming element and manganese.
Another significant patent is a semiconductor ceramic composition that exhibits positive temperature characteristics. This composition includes titanates of barium, lead, and calcium, with specific mole percentages of lead titanate, calcium titanate, and barium titanate, along with a semiconductor-forming component.
Career Highlights
Kazunari Yonezuka is currently employed at TDK Electronics Company, Limited, where he continues to develop innovative technologies. His work has been instrumental in advancing the efficiency and effectiveness of heating elements in various applications.
Collaborations
Yonezuka has collaborated with notable coworkers, including Kazumasa Umeya and Ryoichi Shioi. Their combined expertise has contributed to the successful development of new technologies in the field.
Conclusion
Kazunari Yonezuka is a key figure in the innovation of heating element technology, with a focus on ceramic materials. His patents reflect a commitment to enhancing the performance of heating elements, making significant strides in the industry.