Hiroshi Akiyama

Title: Hiroshi Akiyama and His Contributions to Ion-Exchange Materials

Introduction

Hiroshi Akiyama is an inventor associated with Ichikawa, Japan, and Rohm and Haas Company. His listed work includes inventions for producing ion-exchange materials using activated carbon and fiber structures. He is credited with 3 patents.

Latest Patents

Akiyama’s listed patents address methods for creating ion-exchange resins and fiber-supported ion exchangers.

“Method of Manufacture of Ion Exchange Resins” describes a process in which granular activated carbon retains a polymerizable solution containing monovinyl and/or polyvinyl monomers and a polymerization initiator. The retained solution is polymerized in an aqueous medium, after which an ion-exchange group is introduced. The method uses activated carbon as the resin’s matrix.

“Fiber-Supported Ion Exchanger” describes retaining a vinyl monomer solution within the interstices of a woven or non-woven fiber structure. The monomers are polymerized in the presence of an organic solvent that is sparingly soluble or insoluble in water, forming a macroreticular polymer. The polymer is then functionalized with an ion-exchange group.

Career Highlights

Akiyama’s listed inventions focus on methods for incorporating polymer materials into porous or fibrous supports and converting them into ion exchangers. The described approaches use granular activated carbon or fiber structures as the supporting matrix.

Collaborations

Akiyama’s listed coworkers include Kohji Oinuma and Hideo Naotsuka. His company affiliation is Rohm and Haas Company.

Conclusion

Hiroshi Akiyama’s listed patent work centers on ion-exchange materials, with methods that use activated carbon and fiber structures to support functional polymers.