This inventor holds 13 USPTO granted patents and 1 EPO patent. Top assignees: Daicel Chemical Industries, Ltd., 501 Daicel Chemical Industries Ltd.. Active years: 1989-2005.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Amagasaki, JP (1989)
- Otake, JP (1999 - 2000)
- Hiroshima, JP (1998 - 2003)
- Ohtake, JP (1999 - 2005)
Company Filing History:

Years Active: 1989-2005
Title: The Innovative Contributions of Yoshihiro Ohtsuka
Introduction
Yoshihiro Ohtsuka is a prominent inventor based in Ohtake, Japan. He has made significant contributions to the field of polymer chemistry, particularly in the development of epoxidized thermoplastic polymers. With a total of 13 patents to his name, Ohtsuka's work has had a considerable impact on the industry.
Latest Patents
Ohtsuka's latest patents include groundbreaking processes for producing epoxidized thermoplastic polymers. One notable patent describes an epoxidized granular thermoplastic polymer that features a shell-like surface layer insoluble in toluene at 25°C. This process involves epoxidizing a granular thermoplastic polymer in a water medium with an epoxidizing agent, followed by washing and neutralization steps. Another significant patent outlines a method for producing an epoxidized diene polymer, which eliminates issues associated with traditional epoxidation methods by maintaining the polymer in a solid form during the process. This innovative approach results in an epoxidized diene polymer with excellent heat stability.
Career Highlights
Throughout his career, Yoshihiro Ohtsuka has worked with notable companies, including Daicel Chemical Industries, Ltd. and 501 Daicel Chemical Industries Ltd. His experience in these organizations has allowed him to refine his expertise in polymer chemistry and contribute to various innovative projects.
Collaborations
Ohtsuka has collaborated with esteemed colleagues such as Yasuhiro Oshino and Akihiro Yabui. These partnerships have fostered a collaborative environment that has led to the advancement of new technologies in the field.
Conclusion
Yoshihiro Ohtsuka's contributions to polymer chemistry through his innovative patents and collaborations have significantly advanced the industry. His work continues to inspire future developments in the field of thermoplastic polymers.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile