This inventor holds 3 USPTO granted patents. Top assignee: Sumitomo Chemical Company, Limited. Active years: 1992-2005.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Misawa, JP (1992)
- Takatsuki, JP (1993)
- Oita, JP (2005)
Company Filing History:
Years Active: 1992-2005
Title: The Innovative Contributions of Osamu Maruyama
Introduction
Osamu Maruyama is a notable inventor based in Oita, Japan. He has made significant contributions to the field of chemistry, particularly in the production of specialized compounds. With a total of 3 patents to his name, Maruyama's work has garnered attention for its innovative approaches and practical applications.
Latest Patents
Maruyama's latest patents include a method for producing aminocarbazoles and a process for the production of N-substituted carbazoles. The method for producing aminocarbazoles involves catalytically reducing a nitrocarbazole using an active nickel-based catalyst. This catalyst is prepared by contacting a nickel-based catalyst with an alkali and an iron compound under a hydrogen gas or inert gas atmosphere in an inert solvent. This innovative method prevents decreases in reaction speed and yield, allowing for consistent production of aminocarbazoles. The process for the production of N-substituted carbazoles emphasizes high efficiency, where a carbazole compound is reacted with an appropriate halogenated compound in an inert solvent, in the presence of an acid-removing agent and an amine, without the need for quaternary ammonium salts.
Career Highlights
Osamu Maruyama is currently employed at Sumitomo Chemical Company, Limited, where he continues to develop and refine his innovative methods. His work has not only advanced the field of chemistry but has also contributed to the broader industry through practical applications of his inventions.
Collaborations
Maruyama has collaborated with esteemed colleagues such as Takashi Kamikawa and Shinzaburo Masaki. These collaborations have further enhanced the impact of his work and have led to advancements in their respective fields.
Conclusion
Osamu Maruyama's contributions to the field of chemistry through his innovative patents demonstrate his commitment to advancing scientific knowledge and practical applications. His work continues to influence the industry and inspire future innovations.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile