Patents by Inventor Ayako Hirano

Ayako Hirano 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).

  • Air treatment by multi-stacked plate asembly
    Patent number: 5292479
    Abstract: Rotatable circular plates are stacked apart to form thin air layers therebetween. Rotation of the circular plates moves air over an air treatment material: catalyst or adsorbent. In one embodiment, the air treatment material is affixed to the surface of the circular plates. In another embodiment, the circular plates are formed from the air treatment material. The increased velocity of air relative to the circular plates causes separation of laminar flow, promotes boundary-layer turbulence near the plate surfaces, and promotes propagating stall in the air layers. These phenomena enhance the contact between the flowing air and the air treatment material.
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: March 8, 1994
    Assignee: Toto Ltd.
    Inventors: Hisato Haraga, Hajime Miyazaki, Yasuo Hamada, Katsushi Akamatsu, Ayako Hirano