This inventor holds 2 USPTO granted patents. Top assignees: Bridgestone Corporation, Matsui Shikiso Chemical Co., Ltd.. Active years: 1987-1990.
Company Filing History:
2 out of 5,193 
1 out of 18 Years Active: 1987-1990
Title: Atsuo Takei: Innovator in Polyurethane Foam Technology
Introduction
Atsuo Takei is a notable inventor based in Fujisawa, Japan. He has made significant contributions to the field of polyurethane foam technology, holding 2 patents that showcase his innovative approaches. His work has implications for various applications, including packaging and insulation materials.
Latest Patents
One of Takei's latest patents is a process for producing polyurethane foam. This process utilizes a foam raw material that includes polyols, organic isocyanates, catalysts, and blowing agents. The unique aspect of this invention is the use of a high-molecular weight polyol with a hydroxyl number lower than 100, combined with a low-molecular weight polyol having a hydroxyl number higher than 200, mixed in a specific ratio. The catalysts employed are tertiary amines alone, resulting in polyurethane forms with excellent buckling performance. These materials are anticipated to be beneficial as packaging, shock-absorbing, and heat-insulating materials.
Another significant patent by Takei is for thermochromic polyurethane foam. This foam consists of a polyol and a polyisocyanate as the main components, enhanced by a thermochromic composition that serves as a coloring agent. The thermochromic composition includes an electron-donating chromogenic material, an acidic substance, and a solvent, allowing for dynamic color changes in response to temperature variations.
Career Highlights
Throughout his career, Atsuo Takei has worked with prominent companies such as Bridgestone Corporation and Matsui Shikiso Chemical Co., Ltd. His experience in these organizations has contributed to his expertise in the development of innovative materials.
Collaborations
Takei has collaborated with notable coworkers, including Hajime Hasegawa and Taiji Koga. These partnerships have likely fostered a creative environment that encourages the exchange of ideas and advancements in technology.
Conclusion
Atsuo Takei's contributions to polyurethane foam technology reflect his innovative spirit and dedication to advancing material science. His patents not only demonstrate his technical expertise but also highlight the potential applications of his inventions in various industries.