This inventor holds 2 USPTO granted patents and 1 EPO patent. Top assignees: Takeda Pharmaceutical Company Limited, Wako Pure Chemical Industries, Inc.. Active years: 2006-2012.
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 1,232 
2 out of 299 Years Active: 2006-2012
Title: Kohei Yamamoto: Innovator in Lactic Acid Polymer Technology
Introduction
Kohei Yamamoto is a notable inventor based in Kawagoe, Japan. He has made significant contributions to the field of polymer technology, particularly in the development of lactic acid polymers. With a total of 2 patents to his name, his work has implications for various applications, including sustained-release preparations.
Latest Patents
Yamamoto's latest patents focus on a process for producing a lactic acid polymer with a weight-average molecular weight ranging from 15,000 to 50,000. The process involves hydrolyzing a high molecular weight lactic acid polymer and ensuring that the content of polymeric materials with a weight-average molecular weight of not more than about 5,000 is limited to about 5% by weight. This innovative method allows for the effective separation and collection of the lactic acid polymer, which serves as a matrix for sustained-release preparations. The sustained-release microcapsule preparation encapsulating a physiologically active substance can prevent the initial excessive release of the substance from the microcapsules, maintaining a stable release rate over an extended period.
Career Highlights
Throughout his career, Kohei Yamamoto has worked with prominent companies in the pharmaceutical and chemical industries. He has been associated with Wako Pure Chemical Industries, Inc. and Takeda Pharmaceutical Company Limited. His experience in these organizations has contributed to his expertise in polymer technology and innovation.
Collaborations
Yamamoto has collaborated with notable colleagues, including Tsutomu Tani and Takashi Aoki. These partnerships have likely enriched his research and development efforts in the field of lactic acid polymers.
Conclusion
Kohei Yamamoto's contributions to the development of lactic acid polymers highlight his innovative spirit and dedication to advancing polymer technology. His patents and career achievements reflect his significant impact on the industry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile