Location History:
- Abiko, JP (1991 - 1995)
- Chiba-ken, JP (1996)
Company Filing History:
5 out of 776 
3 out of 137 
2 out of 128 
Years Active: 1991-1996
Title: Kazuhiko Hirose: Innovator in Gas Barrier Technology
Introduction
Kazuhiko Hirose is a prominent inventor based in Abiko, Japan, known for his significant contributions to the field of gas barrier technology. With a total of 10 patents to his name, Hirose has developed innovative solutions that enhance the performance of materials used in various applications.
Latest Patents
Hirose's latest patents include a gas barrier film and its production process. This gas barrier film is formed from a mixture containing polyvinyl alcohol and a partially neutralized product of poly(meth)acrylic acid in a weight ratio of 95:5 to 10:90. It boasts an oxygen permeability constant of 1.25 × 10⁻³ ml(STP)·cm/m²·h·atm{Pa} or smaller, measured under conditions of 30°C and 80% relative humidity. The production process involves subjecting a film formed from this mixture to heat treatment under specific conditions. The resulting gas barrier film exhibits excellent water resistance and oxygen gas barrier properties, is free of chlorine atoms, and is scarcely colored.
Another notable patent is for a gas barrier laminate that consists of at least two layers. This laminate includes a gas barrier film (A) made from a similar mixture and a layer (B) formed from a thermoplastic resin. The production process for this laminate involves casting a solution containing polyvinyl alcohol and poly(meth)acrylic acid onto the thermoplastic resin layer, drying it to form a film, and then applying heat treatment. The contiguous structure of the gas barrier film and the thermoplastic layer enhances the overall performance of the laminate.
Career Highlights
Kazuhiko Hirose has worked with notable companies such as Kureha Kagaku Kogyo Kabushiki Kaisha and Kureha Kagaku Kogyo K.K. His work in these organizations has significantly contributed to advancements in material science and engineering.
Collaborations
Hirose has collaborated with esteemed colleagues, including Hiroyuki Ohba and Hideaki Tanaka, to further his research and development efforts in gas barrier technologies.
Conclusion
Kazuhiko Hirose's innovative work in gas barrier technology has led to the development of advanced materials that are crucial for various applications. His contributions continue to impact the industry