This inventor holds 3 USPTO granted patents. Top assignee: Takeda Chemical Industries, Inc.. Active years: 2000-2004.
Company Filing History:
Years Active: 2000-2004
Title: Yayoi Douken: Innovator in Sustained-Release Preparations
Introduction
Yayoi Douken is a prominent inventor based in Osaka, Japan. She has made significant contributions to the field of pharmaceutical preparations, particularly in the development of sustained-release formulations. With a total of 3 patents to her name, Douken's work has the potential to greatly impact the delivery of physiologically active substances.
Latest Patents
One of her latest patents is a sustained-release preparation capable of releasing a physiologically active substance. This preparation comprises a polymer of lactic acid with a weight-average molecular weight ranging from about 25,000 to about 60,000, along with a physiologically active substance. It is designed to release the active substance over a period of at least five months, demonstrating an almost continuous zero-order release profile.
Another notable patent involves the production of a sustained-release preparation for injection. This method includes adding a sugar to microspheres obtained from a w/o emulsion, which contains a physiologically active peptide as an internal aqueous phase. The process suppresses microsphere particle aggregation and ensures good dispersibility and storage stability.
Career Highlights
Yayoi Douken is currently employed at Takeda Chemical Industries, Inc., where she continues to innovate in the field of pharmaceutical sciences. Her work is characterized by a commitment to improving drug delivery systems, which can enhance patient outcomes.
Collaborations
Throughout her career, Douken has collaborated with notable colleagues, including Hiroaki Okada and Akihiro Yamada. These partnerships have contributed to her success and the advancement of her research.
Conclusion
Yayoi Douken is a trailblazer in the development of sustained-release preparations, with a focus on improving the efficacy of drug delivery systems. Her innovative patents and collaborations highlight her significant role in the pharmaceutical industry.