Company Filing History:
3 out of 1,256 
1 out of 2 
1 out of 2,760 
Years Active: 1981-1988
Title: Masamitsu Takei: Innovator in Unbonded PC Steel Strand Technology
Introduction
Masamitsu Takei is a notable inventor based in Chiba, Japan. He has made significant contributions to the field of construction materials, particularly through his innovations in unbonded PC steel strands. With a total of 3 patents to his name, Takei's work has had a lasting impact on the industry.
Latest Patents
One of Takei's latest patents involves an unbonded PC steel strand used for posttensioning concrete. This invention comprises a PC steel strand made up of multiple stranded wires, featuring a thin transparent lacquer coating on its outer surface. The lacquer coating is designed to break when the strand is subjected to tension, ensuring effective posttensioning of concrete. Additionally, a filler is applied around the lacquer coating, and a synthetic resin sheath covers the entire assembly.
Another patent focuses on a similar unbonded PC steel strand, which includes a zinc plated layer on the outer surface. This design also incorporates a greaselike filler around the zinc plated layer, with a synthetic resin sheath providing protection. The manufacturing method for this strand includes steps such as pickling, water washing, and coating with flux before plating with zinc.
Career Highlights
Masamitsu Takei has worked with prominent companies in the industry, including Kawasaki Steel Corporation and Kawatetsu Wire Products Company Ltd. His experience in these organizations has contributed to his expertise in developing innovative construction materials.
Collaborations
Throughout his career, Takei has collaborated with notable coworkers such as Shigeo Shoji and Syuzo Sato. These partnerships have likely enhanced his research and development efforts in the field.
Conclusion
Masamitsu Takei's contributions to the development of unbonded PC steel strands demonstrate his commitment to innovation in construction technology. His patents reflect a deep understanding of material science and engineering, making him a significant figure in his field.
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.