Company Filing History:
4 out of 80 
1 out of 1 
3 out of 832,891 Years Active: 1979-1985
Title: Kenji Kuroha: Innovator in Concrete Technology
Introduction
Kenji Kuroha is a notable inventor based in Tokyo, Japan, recognized for his contributions to the field of concrete technology. With a total of four patents to his name, Kuroha has developed innovative methods that enhance the properties and applications of concrete.
Latest Patents
One of Kuroha's latest patents is a method and apparatus for applying mortar or concrete. This invention involves supplying one of the ingredients of green concrete to a rotary disc through a central tube using a pump or low-pressure air, while the other ingredient is delivered from a hopper by a screw conveyor. The ingredients are mixed on the rotary disc and projected by centrifugal force. Another significant patent is his method of preparing kneaded compositions. In this process, 30 to 76% of the total water is added to the cement to create a funicular, capillary, or slurry state. The mixture is kneaded to reduce coagulated lumps of cement, followed by the addition of the remaining water for further kneading. This method results in a cement paste, mortar, or green concrete with a low percentage of bleeding water and high compression strength.
Career Highlights
Throughout his career, Kenji Kuroha has worked with prominent companies, including Taisei Corporation. His work has significantly impacted the construction industry, particularly in the development of sustainable concrete solutions.
Collaborations
Kuroha has collaborated with notable coworkers such as Yasuro Ito and Yasuhiro Yamamoto, contributing to advancements in concrete technology through teamwork and shared expertise.
Conclusion
Kenji Kuroha's innovative patents and career achievements highlight his significant role in advancing concrete technology. His work continues to influence the industry, promoting sustainable practices and enhancing material performance.