Location History:
- Ibaraki, JP (1982 - 1983)
- Osaka, JP (1990)
Company Filing History:
6 out of 1,001 
4 out of 5,966 
Years Active: 1982-1990
Introduction
Yoshio Doi, an accomplished inventor based in Ibaraki, Japan, has made significant contributions to the field of pharmaceutical preparations. With a total of seven patents to his name, he has dedicated his career to developing innovative solutions for health-related issues.
Latest Patents
Among his most recent inventions is a pharmaceutical preparation for the treatment of tinea pedis, which contains approximately 0.1% to 2.5% of croconazole hydrochloride and 1% to 15% of an ethyl acrylate-methyl methacrylate copolymer in an aqueous alcohol. In addition, if necessary, this formulation may include about 0.1% to 2.5% of a thickening agent and/or a plasticizer. Another noteworthy patent by Doi is an external preparation of vitamin E, which consists of about 0.1% to 5% of tocopherol acetate and/or about 0.05% to 0.3% of glycyrrhetinic acid, as well as 1% to 15% of a methacrylic acid-ethyl acrylate copolymer. This unique formulation is characterized by the monomer ratio of ethyl acrylate to methacrylic acid ranging from 75/25 to 95/5, and the residual monomer being limited to 50 ppm or less, with practically no surfactants present.
Career Highlights
Yoshio Doi has had a fruitful career, showcasing his expertise while working with reputable companies such as Shionogi & Company Limited and Shin-Etsu Chemical Co., Ltd. His work in these organizations has been instrumental in evolving pharmaceutical research and development.
Collaborations
Throughout his career, Doi has collaborated with talented professionals, including coworkers Yasushi Takagishi and Noboru Hoshi. These collaborations have likely contributed to the innovative solutions Doi has produced, allowing for a more impactful approach to pharmaceutical advancements.
Conclusion
Yoshio Doi stands out as a notable inventor in the pharmaceutical domain. His seven patents, particularly focused on treating skin conditions, underline his commitment to enhancing healthcare through innovation. With a robust career marked by collaborations and corporate experiences, Doi continues to be a pivotal figure in the development of effective pharmaceutical preparations.
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.