Location History:
- Kawasaki, JP (1992)
- Kanagawa, JP (1992)
Company Filing History:
2 out of 173 
2 out of 3,542 Years Active: 1992
Title: The Innovative Contributions of Yasuhisa Tsutsumi
Introduction
Yasuhisa Tsutsumi is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of chemistry, particularly in the preparation of various carboxylic acids. With a total of 2 patents, his work has implications for the production of materials used in polymers and other applications.
Latest Patents
Tsutsumi's latest patents include a process for preparing 2,6-naphthalene-dicarboxylic acid. This innovative process involves a reaction step where 2,6-naphthalene-dicarboxylic acid potassium salts react with benzene-carboxylic acids in the presence of water. This method yields 2,6-naphthalene-dicarboxylic acid and benzene-carboxylic acid potassium salts, allowing for the production of this valuable compound at a low cost on a commercial scale while recycling potassium. Another significant patent is for the preparation of aromatic carboxylic acids or their salts. This process involves heating carboxyl-free aromatic compounds and aromatic carboxylic acid salts under carbon dioxide pressure, facilitating the intermolecular transfer of carboxyl groups.
Career Highlights
Throughout his career, Tsutsumi has worked with prominent companies such as Nippon Steel Chemical Co., Ltd. and Nippon Steel Corporation. His experience in these organizations has contributed to his expertise in chemical processes and innovations.
Collaborations
Some of Tsutsumi's notable coworkers include Shuichi Mitamura and Yoshimi Kata. Their collaborative efforts have likely enhanced the development of innovative solutions in their respective fields.
Conclusion
Yasuhisa Tsutsumi's contributions to the field of chemistry through his patents and career achievements highlight his role as an influential inventor. His innovative processes for preparing carboxylic acids demonstrate the potential for advancements in material production.
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.