Kumagaya, Japan

Akihiko Takei

This inventor holds 1 USPTO granted patent. Top assignee: Chichibu Cement Co., Ltd.. Active years: 1983.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Akihiko Takei. Retrieved from https://idiyas.com/inventor/akihiko-takei-5kr7wiux

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 5.0

ph-index = 1

Forward Citations = 9(Granted Patents)


Company Filing History:


Years Active: 1983

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1 patent (USPTO):Explore Patents

Title: Akihiko Takei: Innovator in Concrete Destruction Technology

Introduction: Akihiko Takei is a notable inventor based in Kumagaya, Japan. He has made significant contributions to the field of construction and demolition through his innovative patent. His work focuses on developing materials that enhance the efficiency of destroying concrete structures.

Latest Patents: Akihiko Takei holds a patent for a unique material designed for destroying concrete structures. This material comprises a mixture of 20 to 80 parts by weight of coarse-grained quicklime, adjusted to a particle size of 88 to 3000 microns, and 20 to 80 parts by weight of cement. The cement may include calcium sulfoaluminate as a hydraulic component, and a retardant can be added to the mixture to slow down the hydration of the calcium sulfoaluminate. When blended with water and injected into holes formed in the concrete, the material expands as it hydrates, effectively cracking and fracturing the structure.

Career Highlights: Akihiko Takei is associated with Chichibu Cement Co., Ltd., where he has been instrumental in advancing concrete destruction technologies. His innovative approach has garnered attention in the construction industry, showcasing the potential for more efficient demolition methods.

Collaborations: Throughout his career, Akihiko Takei has collaborated with esteemed colleagues such as Keiichi Minegishi and Tokuji Akiba. These partnerships have contributed to the development and refinement of his patented technologies.

Conclusion: Akihiko Takei's contributions to the field of concrete destruction technology highlight his innovative spirit and dedication to improving construction practices. His patent serves as a testament to the potential for advancements in demolition methods, paving the way for more efficient and effective solutions in the industry.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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