Company Filing History:
3 out of 7,646 
1 out of 546 Years Active: 1980-2000
Title: Yojiro Yamamoto: Innovator in Epoxy Resin Technology
Introduction
Yojiro Yamamoto is a prominent inventor based in Yokkaichi, Japan. He has made significant contributions to the field of epoxy resin technology, holding a total of 4 patents. His innovative work has paved the way for advancements in materials science, particularly in the preparation and application of high molecular weight epoxy resins.
Latest Patents
Yamamoto's latest patents include a process for the preparation of high molecular weight epoxy resin. This invention relates to a method for creating a high molecular weight epoxy resin with a weight average molecular weight value exceeding 40,000 and an epoxy equivalent weight of less than 10,000 g/eq. The process involves a reaction between a divalent epoxy resin and a bisphenol compound, utilizing a specific molar ratio of epoxy groups to phenolic hydroxyl groups. Another notable patent is for a modified epoxy resin composition, which is suitable for use as a coating for repairs. This modified epoxy resin is produced by reacting an epoxy resin with aliphatic monocarboxylic acids, using a phosphorus-based catalyst.
Career Highlights
Throughout his career, Yamamoto has worked with notable companies such as Shell Oil Company and Mitsubishi Petrochemical Company Limited. His experience in these organizations has contributed to his expertise in the field of epoxy resins and their applications.
Collaborations
Yamamoto has collaborated with esteemed colleagues, including Yoshikazu Kobayashi and Kiyoaki Okayama. These partnerships have fostered innovation and development in the epoxy resin sector.
Conclusion
Yojiro Yamamoto's contributions to epoxy resin technology are significant and impactful. His patents and collaborations reflect his dedication to advancing materials science. His work continues to influence the industry and inspire future innovations.