Masayoshi Tsujii

Title: Masayoshi Tsujii: Inventor of a High-Performance Porous Film

Introduction

Masayoshi Tsujii is an inventor associated with Mitsubishi Plastics, Inc., and is listed in connection with one patent. His work described here concerns a porous film designed to combine permeability with protective and masking properties.

Latest Patents

Tsujii’s listed patent is “Porous Film and Its Production Process.” It describes a film made by melting and kneading a resin composition whose main components are a polyolefin resin and a bulking agent, together with silicone, or silicone and castor oil, and then drawing the composition.

The patent specifies that, after immersion in silicone oil at 200°C for 60 seconds, the film shrinks by 40 to 95 percent in one direction and expands by 5 to 40 percent in the transverse direction. The stated aim is to provide gas and moisture permeability while also improving resistance to liquid leakage and bleeding, as well as concealment and masking at an adhesion area. Tsujii is credited with 1 patent.

Career Highlights

The available information associates Tsujii’s patent work with Mitsubishi Plastics, Inc. The invention focuses on balancing the permeability of a porous material with its ability to contain liquids and conceal an adhesion portion.

Collaborations

Kyosuke Watanabe and Yutaka Kawai are identified as Tsujii’s coworkers. The provided information does not specify their roles in the patent or whether they collaborated on this invention.

Conclusion

Masayoshi Tsujii’s listed invention presents a porous-film production process intended to unite gas and moisture permeability with liquid resistance and masking performance.