Patents by Inventor Tetsuro Niinuma

Tetsuro Niinuma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Concrete composition for overlay method and hardened product therefrom
    Patent number: 6372038
    Abstract: The invention provides a concrete composition used in an overlay method of construction which is used for improving a deteriorated paved surface and/or a paved layer, the concrete composition comprising a cement, a shrink-reducing agent, an expanding agent, a high performance AE water-reducing agent and an AE agent, wherein the cement is a normal portland cement and/or a low heat portland cement. The concrete composition used in an overlay method of construction is rich in the bonding strength between an existent paved layer and a new surface layer and is resistant to exfoliation, cracking of a new surface layer and wear.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: April 16, 2002
    Assignee: New Tokyo International Airport Authority
    Inventors: Shoichi Kameta, Ryoichi Sato, Yoichi Abe, Makoto Tanimura, Tetsuro Niinuma, Hidemi Nakamura, Shoichi Ogawa