This inventor holds 2 USPTO granted patents and 1 EPO patent. Top assignees: Kuraray Co., Ltd., Kuraray Co., Ltd.. Active years: 2025-2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2025-2026
Title: Kazutoshi Mishima: Innovator in Block Copolymer Technology
Introduction
Kazutoshi Mishima is a notable inventor based in Kurashiki, Japan. He has made significant contributions to the field of polymer science, particularly in the development of block copolymers. With a total of 2 patents, his work has advanced the understanding and application of these materials.
Latest Patents
Mishima's latest patents include a block copolymer and a method for producing the same, as well as an absorber and absorbent article using the block copolymer. The first patent describes a block copolymer that consists of a vinyl alcohol-based polymer block and an ionic polymer block. This ionic polymer block contains a monomer unit with an ionic group, such as a carboxylic acid group, a sulfonic acid group, or an ammonium group. The vinyl alcohol-based polymer block has a number-average molecular weight ranging from 15,000 to 220,000, while the ionic polymer block has a content of the vinyl alcohol-based monomer unit between 5 to 95 mol % based on the total monomer units. The block copolymer itself has a number-average molecular weight from 20,000 to 440,000, with a ratio of the number-average molecular weight to the number-average molecular weight ranging from 0.1 to 0.9.
The second patent focuses on a vinyl alcohol-based block copolymer composed of a vinyl alcohol-based polymer block and a copolymer block that includes both vinyl alcohol-based and acrylic acid-based monomer units. This copolymer has a saponification degree of 80 to 99.99 mol % and a number-average molecular weight of 20,000 to 440,000. It also features a molecular weight distribution of 1.05 to 1.95, providing a fine balance of solubility in water and mechanical strength.
Career Highlights
Kazutoshi Mishima has worked with Kuraray Co., Ltd., a leading company in the field of chemical manufacturing. His experience at Kuraray has allowed him to develop innovative materials that have practical applications in various industries.
Collaborations
Mishima has collaborated with notable colleagues such as Kazuhiko Maekawa and Takumi Takayama. These partnerships have contributed to the advancement
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile