Shigeo Harada

Title: Shigeo Harada: Innovator in Solder Detection and Temperature Indication

Introduction

Shigeo Harada is a notable inventor based in Isehara, Japan. He has made significant contributions to the field of materials science, particularly in the detection of impurities in molten solder and the development of reversible temperature indicating materials. With a total of 5 patents to his name, Harada's work reflects a commitment to innovation and practical applications in technology.

Latest Patents

One of Harada's latest patents is a "Detector of impurities in molten solder." This device is designed to detect the types and concentrations of impurity metals in molten solder, as well as changes in the tin-lead composition. The detector operates by measuring the dissolution rate of a metallic film, which is covered at the bottom cross-sectional area of a light-transmissive rod. The top area connects to an optical measurement system via an optical fiber cable, allowing for precise measurement of the time required to dissolve the metallic film in the molten solder sample.

Another significant patent is for "Reversible temperature indicating materials." This invention features a chemically stable material that is non-harmful and can be produced at a relatively low cost. The principal component is a polycrystalline bismuth-chromium oxide substance, created by firing a mixture containing 50-86 molar % of bismuth compounds and 50-14 molar % of chromium compounds. This innovation has potential applications in various industries requiring temperature monitoring.

Career Highlights

Throughout his career, Shigeo Harada has worked with prominent companies, including Sharp Corporation and RCA Inc. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking projects in the field of technology.

Collaborations

Harada has collaborated with notable individuals such as Soitiro Tosima and Yukiko Kobayashi. These partnerships have likely enriched his work and led to further advancements in his inventions.

Conclusion

Shigeo Harada's contributions to the fields of solder detection and temperature indication demonstrate his innovative spirit and dedication to improving technology. His patents reflect a blend of practicality and scientific advancement, making him a significant figure in the world of inventions.