Company Filing History:
1 out of 107 
1 out of 7 
2 out of 832,718 Years Active: 1999-2003
Title: Yuuji Ukena: Innovator in Water Hardness Analysis
Introduction
Yuuji Ukena is a notable inventor based in Matsuyama, Japan. He has made significant contributions to the field of water hardness analysis, holding a total of 3 patents. His innovative work focuses on developing methods and compositions that enhance the measurement of water hardness.
Latest Patents
Ukena's latest patents include a hardness indicator composition and a method of water hardness analysis. This invention is capable of measuring hardness even in higher-hardness water without requiring titration by a two-liquid system. The hardness indicator composition is formulated with a metal indicator and a desensitizer. The hardness indicator is highly reactive to trace amounts of calcium and is designed to be stable in high-temperature environments exceeding 50°C. Various embodiments of the hardness indicator include components such as EBT, a pH buffer, and a masking agent, along with admixtures of Mg-EDTA and potassium sorbate.
Career Highlights
Throughout his career, Ukena has worked with Miura Co., Ltd., where he has further developed his expertise in water hardness analysis. His innovative approaches have contributed to advancements in the field, making him a respected figure among his peers.
Collaborations
Ukena has collaborated with notable individuals such as Junichi Nakajima and Kazuhiro Tachino. These collaborations have fostered a creative environment that has led to the development of his impactful inventions.
Conclusion
Yuuji Ukena's work in water hardness analysis exemplifies the importance of innovation in scientific research. His patents reflect a commitment to improving measurement techniques, which can have significant implications for various industries.