This inventor holds 2 USPTO granted patents. Top assignees: Awa Paper Mfg. Co., Ltd., Japan Exlan Company Limited, Nitto-Denko Corporation. Active years: 2005-2006.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 8 
1 out of 111 
1 out of 3,951 
Years Active: 2005-2006
Title: Innovations of Yoshitsugu Hama
Introduction
Yoshitsugu Hama is a notable inventor based in Naruto, Japan. He has made significant contributions to the field of materials science, particularly in the development of innovative membrane technologies. With a total of two patents to his name, Hama's work focuses on creating advanced materials that enhance the performance of segregating membranes.
Latest Patents
Hama's latest patents include the "Laminated material of segregating membrane and segregating membrane supporting material, and its method of manufacture." This invention describes a segregating membrane supporting material that is a three-dimensional assembly of fibers thermo-compressed into non-woven fabric. The non-woven fabric fibers are joined together in sheet form, and the material includes at least 10 weight % polyacrylonitrile-based synthetic fibers. The thermo-compressed structure achieves an overall bulk density of 40% to 75% of the density of the fibers that constitute the non-woven fabric.
Another significant patent is the "Semipermeable membrane support and process of preparation thereof." This invention involves a semipermeable membrane support made from a non-woven fabric that includes main fiber and binder fiber, both formed of synthetic resin fine fiber. The non-woven fabric is manufactured through a heating and pressing process after paper making, achieving a tensile strength ratio in the paper feeding direction to that in the width direction of 2:1 to 1:1.
Career Highlights
Throughout his career, Yoshitsugu Hama has worked with prominent companies such as Awa Paper Mfg. Co., Ltd. and Nitto Denko Corporation. His experience in these organizations has allowed him to refine his expertise in material development and innovation.
Collaborations
Hama has collaborated with notable colleagues, including Yoshifumi Kusaka and Akihiro Okubo. These partnerships have contributed to the advancement of his research and the successful development of his patented technologies.
Conclusion
Yoshitsugu Hama's contributions to the field of membrane technology through his innovative patents demonstrate his commitment to advancing materials science. His work continues to influence the industry and pave the way for future innovations.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile