Hirokazu Niwa

Title: Hirokazu Niwa: Innovator in Chemical Additives and Retardation Films

Introduction

Hirokazu Niwa is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of chemical engineering, particularly in the development of additives for medicinal agents and advanced retardation films. With a total of 5 patents to his name, Niwa continues to push the boundaries of innovation in his industry.

Latest Patents

Niwa's latest patents showcase his expertise and creativity. One of his notable inventions is an additive for medicinal agents. This additive is designed to enhance the functions of various chemical agents. It comprises a polymer containing 50 mol % to 100 mol % of a structural unit derived from an N-vinyl lactam-based monomer. The additive has an average particle diameter of 100 μm or less, achieved through a drying process under reduced pressure.

Another significant patent is for a retardation film composed primarily of an acrylic polymer. This film exhibits excellent transparency, heat resistance, and substantial retardation. It has an in-plane retardation ranging from 130 nm to 500 nm per 100 μm thickness at a wavelength of 589 nm. Additionally, the film boasts a total light transmittance of not less than 85% and a glass transition temperature between 110° C. and 200° C.

Career Highlights

Hirokazu Niwa has established himself as a key figure in the chemical industry through his work at Nippon Shokubai Co., Ltd. His innovative approach and dedication to research have led to the successful development of various chemical products that have practical applications in multiple sectors.

Collaborations

Niwa has collaborated with notable colleagues, including Tsuyoshi Hirata and Tsutomu Yuasa. These partnerships have fostered a creative environment that encourages the exchange of ideas and the advancement of technology.

Conclusion

Hirokazu Niwa's contributions to the field of chemical engineering are noteworthy. His innovative patents and collaborative efforts highlight his commitment to advancing technology. As he continues to develop new solutions, his work will undoubtedly have a lasting impact on the industry.