This inventor holds 2 USPTO granted patents and 2 published patent applications, plus 1 CIPO patent and 1 EPO patent. Top assignees: Nisshinbo Chemical Inc., Nisshinbo Holdings Inc.. Active years: 2022-2024.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2022-2024
Title: Takehiro Okei: Innovator in Fuel Cell Technology
Introduction
Takehiro Okei is a notable inventor based in Chiba, Japan. He has made significant contributions to the field of fuel cell technology, holding 2 patents that showcase his innovative approach to enhancing fuel cell performance.
Latest Patents
Okei's latest patents include a precursor sheet for a fuel cell separator and a fuel cell separator itself. The precursor sheet comprises a conductive substrate sheet, a dense layer with first graphite particles, and a conduction layer with second graphite particles. The dense layer and conduction layer include a resin, with the first graphite particles exhibiting a volume resistivity of 20 mΩ·cm or greater and a bulk density of 1.7 g/cm³ or greater when compressed at 30 MPa. The second graphite particles have a volume resistivity of less than 20 mΩ·cm and a bulk density of 1.5 g/cm³ or greater when compressed at 30 MPa. This innovative precursor sheet provides a fuel cell separator that boasts excellent shapability, mechanical strength, conductivity, and gas impermeability. Additionally, the fuel cell separator precursor is created by impregnating a porous sheet containing a conductive filler with a resin composition that includes a thermoplastic resin and a conductive filler.
Career Highlights
Throughout his career, Okei has worked with prominent companies such as Nisshinbo Chemical Inc. and Nisshinbo Holdings Inc. His work in these organizations has allowed him to develop and refine his inventions, contributing to advancements in fuel cell technology.
Collaborations
Okei has collaborated with talented individuals in his field, including Kosuke Yasuda and Tomoyuki Araki. These collaborations have further enriched his work and fostered innovation in fuel cell technology.
Conclusion
Takehiro Okei's contributions to fuel cell technology through his patents and collaborations highlight his role as an influential inventor. His innovative solutions continue to pave the way for advancements in energy efficiency and sustainability.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile