Patents by Inventor Eiji Nagoshi

Eiji Nagoshi 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).

  • Stripping composition for resist
    Patent number: 6310020
    Abstract: A stripping composition for a resist comprising a polycarboxylic acid and/or a salt thereof, and water, wherein a pH of the stripping composition is less than 8; and a stripping composition for a resist comprising 0.01 to 90% by weight of an organic acid and/or a salt thereof, 2 to 74% by weight of water, and 0.5 to 90% by weight of an organic solvent, wherein a pH of the stripping composition is less than 8; and a method of stripping a resist from a substrate, comprising applying one of the stripping composition to the substrate.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: October 30, 2001
    Assignee: Kao Corporation
    Inventors: Mami Shirota, Kozo Kitazawa, Eiji Kashihara, Eiji Nagoshi
  • Anti-corrosive draining agent and rinsing process
    Patent number: 5958298
    Abstract: The anti-corrosive draining agent for use in a rinsing process includes a polyoxyalkylene alkyl ether as an essential component. The anti-corrosive draining agent further includes an amine compound as an essential component, wherein the polyoxyalkylene alkyl ether (a) and the amine compound (b) are contained in a blending weight ratio (a/b) of from 99/1 to 80/20. The rinsing process using water following a cleaning process, includes the steps of adding the above anti-corrosive draining agent to a rinsing water, and rinsing an object in the rinsing water.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: September 28, 1999
    Assignee: Kao Corporation
    Inventors: Eiji Nagoshi, Kozo Kitazawa