This inventor holds 2 USPTO granted patents. Top assignee: Mitsui Chemicals, Inc.. Active years: 2011-2012.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kuga-gun, JP (2011)
- Yamaguchi, JP (2012)
Company Filing History:
Years Active: 2011-2012
Title: Nobukazu Yamahira: Innovator in Olefin Polymer Production
Introduction
Nobukazu Yamahira is a distinguished inventor based in Yamaguchi, Japan. He has made significant contributions to the field of polymer chemistry, particularly in the production of olefin polymers. With a total of two patents to his name, his work focuses on enhancing the efficiency and quality of polymerization processes.
Latest Patents
Yamahira's latest patents include a process for preparing olefin polymer using a mixed catalyst. This innovative method addresses the challenge of efficiently obtaining an α-olefin polymer with a high melting point and high molecular weight. The process involves polymerizing at least one monomer selected from α-olefins of two or more carbon atoms at temperatures not lower than 40°C. The catalyst used comprises a transition metal compound and an organometallic compound, resulting in an olefin polymer with specific molecular weight characteristics and a melting point of not lower than 150°C.
Another notable patent is for the production of syndiotactic propylene polymer. This method produces a polymer with a syndiotactic pentad fraction of not less than 85% and a melting point within the range of 145-170°C. The solution polymerization method utilizes a group 4 crosslinked metallocene compound, allowing for continuous production without polymer precipitation.
Career Highlights
Yamahira is currently employed at Mitsui Chemicals, Inc., where he continues to advance his research in polymer production. His work has been instrumental in developing new materials that meet the demands of various industrial applications.
Collaborations
He collaborates with talented coworkers, including Tomohiro Yamaguchi and Junpei Tanaka, who contribute to the innovative environment at Mitsui Chemicals, Inc. Their combined expertise fosters a culture of creativity and advancement in polymer technology.
Conclusion
Nobukazu Yamahira's contributions to the field of polymer chemistry are noteworthy, particularly in the development of efficient processes for olefin polymer production. His patents reflect a commitment to innovation and excellence in material science.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile