Hideto Umekawa

Title: The Innovations of Hideto Umekawa

Introduction

Hideto Umekawa is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of chemical engineering, particularly in the development of sizing agents for papermaking. With a total of three patents to his name, Umekawa's work has had a considerable impact on the industry.

Latest Patents

Umekawa's latest patents include an alkenylsuccinic acid emulsion sizing agent and an emulsified alkenylsuccinic acid sizing agent. The alkenylsuccinic acid emulsion sizing agent features a solid concentration of at least 25% by weight and comprises active components that include alkenylsuccinic acid. This acid is present in an amount of at least 50 parts by weight per 100 parts by weight of the total active components. The alkenylsuccinic acid is obtained by dispersing a product prepared by reacting a branched inner olefin with maleic anhydride in water using an amphoteric acrylamide-series polymer. The emulsified alkenylsuccinic acid sizing agent is particularly useful for acid papermaking, offering good storage stability and an excellent sizing effect at a low addition ratio.

Career Highlights

Umekawa is currently employed at Mitsubishi Oil Co., Ltd., where he continues to innovate and develop new products. His expertise in chemical formulations has positioned him as a key player in the advancement of papermaking technologies.

Collaborations

Throughout his career, Umekawa has collaborated with notable colleagues such as Yoshio Takahashi and Junji Okazaki. These partnerships have fostered a creative environment that encourages the exchange of ideas and the development of innovative solutions.

Conclusion

Hideto Umekawa's contributions to the field of chemical engineering, particularly in papermaking, highlight his role as an influential inventor. His patents reflect a commitment to innovation and the advancement of industry standards.