Company Filing History:
5 out of 163 
4 out of 42 
1 out of 832,891 Years Active: 1990-2002
Title: Hitoshi Kumagai: A Trailblazer in Chemical Innovations
Hitoshi Kumagai is a prolific inventor based in Saitama, Japan. He has made significant contributions to the field of chemistry, particularly through his innovative patents that focus on cyclic phenol sulfides.
Latest Patents
Kumagai holds a total of six patents, with his latest innovations including a series of groundbreaking inventions. These include "Sulfonated Derivatives of Cyclic Phenol Sulfides, Process for the Preparation Thereof," "Separating and Recovering Agents Containing Cyclic Phenol Sulfides," "Methods for Separation and Recovery Therewith," and "Drug Compositions Containing the Sulfides." His work primarily revolves around cyclic phenol sulfides possessing at least one sulfinyl or sulfonyl group.
Career Highlights
Throughout his career, Hitoshi Kumagai has worked with notable companies, including Cosmo Oil Co., Ltd. and the Cosmo Research Institute. His expertise and innovative mindset have allowed him to advance chemical methodologies, significantly impacting the industry.
Collaborations
In his journey of innovation, Kumagai has had the privilege to collaborate with talented individuals like Takashi Hori and Sotaro Miyano. These partnerships have fostered an environment of creativity and knowledge sharing, further enhancing his contributions to the field.
Conclusion
Hitoshi Kumagai exemplifies the spirit of innovation in chemistry through his substantial patent portfolio and impactful career. His work continues to influence the industry, showcasing the value of collaboration and persistent exploration in the pursuit of scientific advancements.