Kazuaki Rikiyama

Title: Kazuaki Rikiyama and Advances in Single-Polymer Particles.

Introduction

Kazuaki Rikiyama is an inventor associated with the National Institutes for Quantum Science and Technology in Japan. His patent work concerns precisely controlled single-macromolecule particles and potential applications in biological imaging, tumor measurement, and drug delivery.

Latest Patents

Rikiyama is credited with 1 patent: “Single-polymer particles, active molecular complex, method for producing single-polymer particles, method for measuring tumor size, method for measuring fine structure within tumor, method for imaging biological tissue, drug delivery system, and contrast agent kit.”

The invention describes particles formed from a single macromolecule, with a molecular-weight distribution ratio of no more than 1.5. This narrow distribution is intended to enable more accurate control of particle hydrodynamic diameter. The disclosed structures may consist of a single hydrophilic macromolecule or a main-chain hydrophilic macromolecule joined to one or more hydrophilic side-chain macromolecules. The patent also addresses production methods and possible uses in imaging biological tissue, measuring tumor size and fine structure, drug delivery, and contrast-agent kits.

Career Highlights

Rikiyama’s listed patent reflects research at the intersection of macromolecular materials and biomedical applications. Its proposed particle design aims to improve control over particle size, a property relevant to imaging and other diagnostic or therapeutic technologies.

Collaborations

The patent’s listed coworkers include Kensuke Osada and Akira Sumiyoshi. Rikiyama is associated with the National Institutes for Quantum Science and Technology.

Conclusion

Kazuaki Rikiyama’s patent focuses on single-macromolecule particles with tightly controlled molecular-weight distribution and potential applications in biological imaging, tumor assessment, and drug delivery.