Nobuhito Takeshima

Title: Nobuhito Takeshima: Innovator in Glass Technology

Introduction

Nobuhito Takeshima is a prominent inventor based in Chiba, Japan. He has made significant contributions to the field of glass technology, particularly in the development of low temperature co-fired substrates and glass polarizers. With a total of 2 patents, his work is recognized for its innovative approach and practical applications.

Latest Patents

One of his latest patents is a low temperature co-fired substrate composition. This invention addresses the demand for a substrate that maintains low relative permittivity and high Q value without reacting with silver, which is commonly used as an electrode material. The composition includes 83 to 91 wt. % of CaO—B2O3—SiO2 based glass powder, along with nanometer-sized SiO2 powders and β-wollastonite powder as a crystallization agent. This innovative substrate is designed to prevent silver migration during co-firing operations at low temperatures.

Another notable patent is for a glass polarizer and its manufacturing method. This glass polarizer exhibits excellent transmittance and extinction ratio for visible light, including blue light. The manufacturing process involves using borosilicate glass with dispersed silver halide particles, which are reduced to generate metallic silver particles. The resulting glass polarizers are characterized by their orientation and stretching, enhancing their optical properties.

Career Highlights

Nobuhito Takeshima is currently associated with Okamoto Glass Co., Ltd., where he continues to push the boundaries of glass technology. His work has not only advanced the field but has also contributed to the practical applications of glass in various industries.

Collaborations

He has collaborated with notable coworkers, including Khaled Jabri and Atsushi Arai, who have contributed to his innovative projects and research endeavors.

Conclusion

Nobuhito Takeshima's contributions to glass technology through his patents and collaborations highlight his role as a leading inventor in the field. His innovative solutions continue to impact the industry positively.