This inventor holds 1 USPTO granted patent. Top assignee: Nippon Soda Co., Ltd.. Active years: 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: 2026
Title: Toshifumi Nosaki: Inventor in Polymer Production
Introduction
Toshifumi Nosaki is an inventor associated with Ichihara, Japan, and Nippon Soda Co., Ltd. His patent work concerns a method for producing block copolymers.
Latest Patents
Nosaki is credited with 1 patent: “Method for Producing Block Copolymer.” The method describes anionic polymerization in a mixed solvent containing a nonpolar solvent—methylcyclohexane or methylcyclopentane—and an aprotic polar solvent. It first polymerizes a vinyl aromatic monomer at temperatures from −5°C to 35°C, then adds a conjugated diene monomer for further polymerization within the same temperature range. A further vinyl aromatic monomer may be added afterward for additional polymerization.
Career Highlights
Nosaki’s listed invention focuses on controlling the stages and conditions of block copolymer production. The patent identifies Nippon Soda Co., Ltd. as his company affiliation.
Collaborations
Shota Osumi and Masahiro Umezawa are identified as Nosaki’s coworkers.
Conclusion
Toshifumi Nosaki’s patent documents a staged anionic polymerization method for producing block copolymers, reflecting his work in polymer-related innovation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile