Location History:
- Ichihara, JP (2003 - 2008)
- Chiba, JP (2015)
- Yamaguchi, JP (2021)
Company Filing History:
Years Active: 2003-2021
Title: The Innovative Contributions of Yuuichi Fujii in Polyimide Film Technology
Introduction
Yuuichi Fujii is an accomplished inventor based in Ichihara, Japan. With a total of four patents to his name, Fujii has made significant strides in the field of polyimide film production. His expertise and innovative approaches have contributed to advancements in materials science, particularly in the development of porous polyimide films.
Latest Patents
Fujii's latest patents include a method for producing porous polyimide film and the resulting porous polyimide film itself. The first patent outlines a method comprising two steps. The initial step involves casting a poly(amic acid) solution, containing 40%-97% by mass of organic polar solvent and 3%-60% by mass of poly(amic acid), into film form and immersing it in a coagulating solvent with water as a primary component. The second step details the heat treatment and imidization of the porous film to suppress shrinkage to no more than 8% in both longitudinal and transverse directions. This innovative method allows for a rapid temperature increase during heat treatment, improving efficiency and quality.
The second patent features a porous polyimide film with a three-layer structure. It includes two surface layers and a macrovoid layer in between, which has distinct partition walls that bond with the surface layers. This structure enables multiple macrovoids surrounded by partition walls and significant porosity, boasting a mean pore size ranging from 10 to 500 micrometers. The unique configuration of this film allows for enhanced functionality in various applications, showcasing Fujii’s ingenuity in material design.
Career Highlights
Yuuichi Fujii's affiliation with Ube Industries, Inc. has positioned him at the forefront of research and development in polyimide technology. His dedication to innovation is evident not only in his patents but also in the impactful contributions he continues to make within his company. His work promotes the integration of advanced materials in industries ranging from electronics to aerospace.
Collaborations
Fujii has collaborated with notable colleagues such as Shyusei Ohya and Makoto Matsuo. These partnerships have fostered a creative environment where ideas can flourish, ultimately leading to remarkable advancements in polymer processing and applications. Together, they embody the spirit of teamwork and innovation, pushing the boundaries of what is possible in material sciences.
Conclusion
Yuuichi Fujii stands out as a prominent inventor in the realm of polyimide film technology. With his recent patents focusing on production methods and innovative film structures, he continues to lead the way in materials research. His contributions significantly impact various industries, demonstrating the importance of innovation and collaboration in driving technological progress.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.