Patents by Inventor Akira Kumasaka

Akira Kumasaka 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).

  • Method for manufacturing agglomerates of sintered pellets
    Patent number: 5169434
    Abstract: A method for manufacturing agglomerates of sintered pellets includes the steps of blending, mixing and pelletizing flux and coarse grain coke with fine iron ore, coating green pellets obtained in the step of the mixing and pelletizing with powdery coke, and sintering the green pellets coated with the powdery coke. The coarse grain coke has a particle size of 1 to 7 mm. 1 to 50 parts of the coarse grain coke, by weight, are added to 100 parts of the total amount of the fine iron ore and the flux by weight.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: December 8, 1992
    Assignee: NKK Corporation
    Inventors: Akira Kumasaka, Noboru Sakamoto, Hideomi Yanaka