Company Filing History:
2 out of 191 
1 out of 13 
1 out of 499 Years Active: 1987-1991
Title: Chiyoko Ishiyama: Innovator in Pharmaceutical Chemistry
Introduction
Chiyoko Ishiyama is a notable inventor based in Ami, Japan. He has made significant contributions to the field of pharmaceuticals, particularly in the development of prostaglandin I.sub.2 analogues. With a total of 2 patents, his work has had a profound impact on medical science.
Latest Patents
Ishiyama's latest patents focus on pharmaceuticals containing prostaglandin I.sub.2. These compositions are designed to have circulation ameliorating effects and antiulcer effects. The active ingredients include prostaglandin I.sub.2 analogues, which exhibit potent platelet aggregation inhibiting effects, blood pressure depressing effects, and vasodilative effects, all while maintaining low toxicity levels.
Career Highlights
Throughout his career, Chiyoko Ishiyama has worked with prominent organizations such as Sagami Chemical Research Center and Mitsubishi Yuka Pharmaceutical Co., Ltd. His expertise in pharmaceutical chemistry has led to advancements that benefit both patients and the medical community.
Collaborations
Ishiyama has collaborated with esteemed colleagues, including Masakatsu Shibasaki and Mikiko Sodeoka. These partnerships have fostered innovation and contributed to the success of his research endeavors.
Conclusion
Chiyoko Ishiyama's contributions to pharmaceutical science through his innovative patents and collaborations highlight his role as a key figure in the field. His work continues to influence the development of effective medical treatments.