Shohachi Ushijima

Title: Shohachi Ushijima: Innovator in Enteric Coating Technologies

Introduction

Shohachi Ushijima is a notable inventor based in Yatsushiro, Japan. He has made significant contributions to the field of enteric coating technologies, holding 2 patents that showcase his innovative approach to improving pharmaceutical formulations.

Latest Patents

Ushijima's latest patents include an aqueous enteric coating liquid that demonstrates excellent dispersion stability and resistance to gastric juice. This formulation comprises an alkali metal salt of an acid with a dissociation constant of at least 3 at 25°C, along with a water-insoluble oxycarboxylic acid type cellulose derivative. His second patent details a process for preparing carboxymethyl ethyl cellulose (CMEC) suitable for enteric coating. This process involves several steps, including the reaction of carboxymethyl cellulose with an ethyl halide and subsequent depolymerization, resulting in a product that is easily soluble in organic solvents and dispersible in water.

Career Highlights

Ushijima is currently associated with Kohjin Co., Ltd., where he continues to develop innovative solutions in the field of enteric coatings. His work has significantly advanced the quality and effectiveness of pharmaceutical coatings, making them more reliable for various applications.

Collaborations

He collaborates with notable colleagues, including Hideaki Mukohyama and Ryoichi Hiraoka, who contribute to his research and development efforts.

Conclusion

Shohachi Ushijima's contributions to enteric coating technologies reflect his dedication to innovation and excellence in the pharmaceutical industry. His patents not only enhance the quality of pharmaceutical products but also pave the way for future advancements in the field.