Shyoji Yokokoji

Title: Shyoji Yokokoji: Inventor of Specialized Packaging Technologies.

Introduction

Shyoji Yokokoji is an inventor associated with Yashio, Japan, and Toppan Printing Co., Ltd. His work includes packaging technologies designed for demanding medical and sterilization applications. He is credited with 3 patents.

Latest Patents

Yokokoji’s listed patents include inventions for preserving biological materials and packaging items for sterilization.

“Container bag” describes a bag intended to preserve blood or blood components in liquid nitrogen. Its layered construction pairs an inner layer of ethylene-tetrafluoroethylene copolymer with an outer layer made from one of several specified materials, including polyethylene naphthalate, cross-linked polyethylene, or fluoropolymer resins. The design focuses on maintaining physical properties at extremely low temperatures.

“Package for a sterilized material” concerns packaging, such as for a medical instrument, that can be sterilized using ethylene oxide gas. The package combines a coated paper substrate with a thermoplastic resin layer and a covering sheet heat-sealed around the contents. It also includes an indicator that makes completion of disinfection visibly recognizable.

Career Highlights

Yokokoji’s listed inventions address practical challenges in medical packaging, including protecting biological materials during cryogenic storage and enabling sterilization while keeping packaged contents hermetically sealed. His work is associated with Toppan Printing Co., Ltd.

Collaborations

Among Yokokoji’s listed coworkers are Kazuhisa Hoshino and Sunao Thukamoto.

Conclusion

Shyoji Yokokoji’s patent work reflects a focus on specialized packaging solutions for biological preservation and sterilized materials.