Patents by Inventor Katsuji Tani

Katsuji Tani 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).

  • Pressure sensitive adhesive sheet for detection of microorganism and method for detection of microorganism
    Patent number: 6203900
    Abstract: A pressure sensitive adhesive sheet for the detection of microorganisms, which comprises a laminate of an adhesive layer mainly composed of a water-soluble polymer and a water-permeable membrane which does not allow passage of the microorganisms; a pressure sensitive adhesive sheet for the detection of microorganisms, wherein the surface of the adhesive layer has a contact angle with water of not more than 90°; and a method for detecting a microorganism, which comprises bringing the surface of an adhesive layer of a pressure sensitive adhesive sheet into contact with the surface of a test object, and then bringing the surface of the adhesive layer into contact with water, said adhesive layer or water containing a chromogenic reagent. The use of the laminate makes it possible to leave only stained microorganisms on the water-permeable membrane and to precisely observe the color developed by the microorganisms.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: March 20, 2001
    Assignee: Nitto Denko Corporation
    Inventors: Takeshi Saika, Shuji Senda, Yoshitaka Kazuse, Akio Iwama, Tetsuji Sugii, Masao Nasu, Katsuji Tani, Nobuyasu Yamaguchi