This inventor holds 3 USPTO granted patents. Top assignees: Daiichi Pharmaceutical Co., Ltd., Drug Delivery System Institute, Ltd., Kabushiki Kaisha Kogai Boshi Sogo Kenkyusho. Active years: 1985-2005.
Company Filing History:
1 out of 200 
1 out of 12 
1 out of 2 Years Active: 1985-2005
Title: Eiji Kumazawa: Innovator in Drug Complexes
Introduction
Eiji Kumazawa is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of pharmaceuticals, particularly in the development of drug complexes. With a total of 3 patents to his name, his work focuses on enhancing the efficacy and safety of antineoplastic agents.
Latest Patents
Kumazawa's latest patents include innovative drug complexes characterized by the binding of a drug compound residue, such as antineoplastic agents, to a carboxy(C)alkyldextran polyalcohol. This polyalcohol is obtained by treating dextran under conditions that enable substantially complete polyalcoholization. The binding is achieved through a spacer comprising an amino acid or a spacer made of peptide-bonded 2 to 8 amino acids. These complexes exhibit excellent selectivity to tumorous sites, resulting in high antineoplastic activity while also reducing the appearance of toxicity.
Career Highlights
Throughout his career, Eiji Kumazawa has worked with various organizations, including Kabushiki Kaisha Kogai Boshi Sogo Kenkyusho. His innovative approach to drug development has positioned him as a key figure in the pharmaceutical industry.
Collaborations
Kumazawa has collaborated with notable colleagues such as Kazuhiro Inoue and Hiroshi Susaki. Their combined expertise has contributed to the advancement of drug complex technologies.
Conclusion
Eiji Kumazawa's work in drug complexes represents a significant advancement in the field of pharmaceuticals. His innovative patents and collaborations highlight his commitment to improving cancer treatment options.