Location History:
- Kanagawa, JP (1997)
- Saitama, JP (2000)
Company Filing History:
2 out of 1,858 
2 out of 299 Years Active: 1997-2000
Title: **Masahisa Oka: Innovator in Chemical Synthesis**
Introduction
Masahisa Oka, a talented inventor based in Kanagawa, Japan, has made significant contributions to the field of chemical synthesis. With a total of three patents to his name, he is known for his innovative approaches in creating new compounds and enhancing drug release systems. His work demonstrates a commitment to advancing chemistry and benefiting pharmaceutical applications.
Latest Patents
Among Masahisa Oka's latest patents is a method for the formation of a carbon-carbon bond. This innovative method pertains to an addition reaction that involves an.alpha.-halogeno carboxylic acid derivative and an alkene, facilitated by a catalyst represented by a specific general formula. This patent highlights Oka's expertise in organic chemistry and his aim to streamline complex chemical reactions.
Another noteworthy patent is a matrix for sustained-release preparation. This invention comprises an ester formed at a terminal carboxyl group of a straight-chain polyester, primarily consisting of an.alpha.-hydroxymonocarboxylic acid. The matrix is designed to be stable under various conditions such as light, heat, and moisture, ensuring low toxicity. Moreover, the sustained-release preparation produced using Oka's matrix guarantees a stable drug release over an extended duration, avoiding excessive release immediately after administration.
Career Highlights
Masahisa Oka has worked with esteemed companies such as Takeda Chemical Industries, Inc. and Wako Pure Chemical Industries, Inc. Throughout his career, he has focused on research and development in the chemistry sector, consistently pushing the boundaries of innovation.
Collaborations
In his career, Masahisa Oka has collaborated with fellow researchers and coworkers, including Atsunori Sano and Yasutaka Igari. Their joint efforts have contributed to advancements in the field and have led to numerous developments in the realm of chemical inventions.
Conclusion
Masahisa Oka stands out as a significant figure in the world of chemical synthesis, with his patents reflecting a deep understanding and innovative approach to solving complex chemical challenges. His ongoing contributions are sure to influence future advancements in pharmaceutical preparations and chemical technology.