Location History:
- Chiba, JP (1992)
- Mobara, JP (1992)
Company Filing History:
Years Active: 1992
Title: Innovations by Masami Oyamada in Herbicide Development
Introduction
Masami Oyamada is a notable inventor based in Chiba, Japan. He has made significant contributions to the field of herbicide development, holding 2 patents that focus on innovative solutions for agricultural challenges.
Latest Patents
His latest patents include the development of 4-ethyl-3-(substituted phenyl)-1-(3-trifluoromethylphenyl)-2-pyrrolidinones and corresponding compounds. These compounds exhibit selective herbicidal activities against various weeds that pose problems in rice or upland fields, even at extremely low application rates. The preparation methods involve reductive dehalogenation of a corresponding alpha-haloethyl substituted pyrrolidinone or reductive cyclization of a corresponding N-2-butenyl-N-(substituted phenyl)-haloacetyl-3-trifluoromethylaniline. Another patent focuses on 1-(3-substituted benzyl)-3-halogeno-4-(1-halogeno-alkyl)-2-pyrrolidinones, which are useful herbicides in rice paddy fields for controlling weeds, particularly Echinochloa crusgalli. These can be produced by dehalogenation of the corresponding 3-dihalogeno compounds or by cyclizing a 2,2-dihalogenoacetamide derivative under the presence of an appropriate catalyst.
Career Highlights
Masami Oyamada works at Mitsui Toatsu Chemicals, Incorporated, where he continues to innovate in the field of herbicides. His work has been instrumental in developing effective solutions for weed control in agricultural settings.
Collaborations
He collaborates with notable coworkers, including Kengo Oda and Koichi Moriyasu, who contribute to his research and development efforts.
Conclusion
Masami Oyamada's contributions to herbicide innovation demonstrate his commitment to addressing agricultural challenges through scientific advancements. His patents reflect a deep understanding of chemistry and its application in improving crop management.