Location History:
- Tokyo, JA (1978)
- Nikahomachi, JP (1981 - 1987)
Company Filing History:
Years Active: 1978-1987
Title: Kazumasa Umeya: Innovator in PTC Heating Technology
Introduction
Kazumasa Umeya is a notable inventor based in Nikahomachi, Japan. He has made significant contributions to the field of heating technology, particularly through his innovative work on positive temperature coefficient (PTC) heating elements. With a total of 3 patents to his name, Umeya continues to push the boundaries of what is possible in this area.
Latest Patents
Umeya's latest patents include a PTC heating apparatus and a heating element made of PTC ceramic material. The PTC heating apparatus features a honeycomb ceramic body that comprises barium titanate and a semiconductor element. This design provides the ceramic body with a positive temperature coefficient of resistance over the Curie point. Notably, the electrodes deposited on each end of the honeycomb body exhibit non-ohmic properties, which help to decrease high rush current and migration, a significant improvement over conventional electrodes.
The second patent focuses on a heating element for air heaters, characterized by its relatively high heat generation capability compared to conventional heating elements of the same size. The ceramic materials used in this heating element have a temperature coefficient of electrical resistance ranging from 5 to 20% per degree Celsius. The composition includes specific molar percentages of BaO, PbO, TiO2, a semiconductor forming element, and manganese.
Career Highlights
Kazumasa Umeya is currently employed at TDK Electronics Company, Limited, where he continues to develop innovative heating technologies. His work has garnered attention for its practical applications and efficiency improvements in heating systems.
Collaborations
Umeya has collaborated with notable coworkers, including Kazunari Yonezuka and Ryoichi Shioi. Their combined expertise has contributed to the advancement of PTC heating technology.
Conclusion
Kazumasa Umeya stands out as a pioneering inventor in the field of PTC heating technology. His innovative patents and contributions to TDK Electronics Company, Limited, highlight his commitment to advancing heating solutions. His work continues to influence the industry and improve heating efficiency.