Location History:
- Ichihara, JA (1976 - 1978)
- Ichihara, JP (1978 - 1981)
- Chiba, JP (1989 - 1992)
Company Filing History:
10 out of 6,892 
1 out of 30 
Years Active: 1976-1992
Title: Takeo Oyamada: Pioneer of Vinyl Acetate-Ethylene Copolymer Innovations
Introduction
Takeo Oyamada is a distinguished inventor hailing from Ichihara, Japan. With an impressive portfolio of 10 patents to his name, he has made significant contributions to the field of polymer chemistry, particularly in the development of vinyl acetate-ethylene copolymer emulsions.
Latest Patents
Among Oyamada's notable inventions is his latest patent for a vinyl acetate-ethylene copolymer emulsion and the process for its production. This innovative emulsion comprises a vinyl acetate-ethylene copolymer made up of 10 to 40% by weight of ethylene units and 60 to 90% by weight of vinyl acetate units. The formulation includes an emulsifying dispersant in a precise amount, characterized by a mean particle size of no larger than 0.9 µm and a solids content ranging from 65 to 75% by weight. Additionally, the emulsifying dispersant contains partially saponified polyvinyl alcohol and a polyoxyethylene nonionic surface active agent, optimized for effective performance in various applications.
Career Highlights
Takeo Oyamada has had a remarkable career, having worked at prominent companies such as Sumitomo Chemical Company, Limited and Hayashibara Biochemical Laboratories, Inc. His expertise in chemical engineering and a strong focus on polymer applications have shaped his innovative approach to creating emulsions that cater to diverse industrial needs.
Collaborations
Throughout his career, Oyamada has collaborated with esteemed professionals in the industry, including Shizuo Narisawa and Yoshito Taira. These partnerships have enhanced the research and development of his patented technologies, allowing for the exchange of ideas and fostering a collaborative environment that drives innovation.
Conclusion
Takeo Oyamada's contributions to the field of polymer chemistry through his innovative patents have established him as a key figure in the industry. His work on vinyl acetate-ethylene copolymer emulsions showcases the intersection of creativity and scientific expertise, paving the way for future advancements in material science. With his impressive track record and ongoing commitment to innovation, Oyamada continues to inspire future inventors and chemical engineers.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.