Patents by Inventor Takayuki Asukata

Takayuki Asukata 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).

  • Stamper manufacturing method
    Patent number: 6699643
    Abstract: It is an object to provide a stamper manufacturing method capable of shortening a time taken for manufacturing a stamper without requiring special equipment such as a dry etching device. The stamper manufacturing method comprises the steps of forming a photoresist layer (6) on one of surfaces of a conductive substrate (1), exposing a desirable portion of the photoresist layer (6), developing the photoresist layer (6), forming an electroforming body (8) on the substrate (1) in a portion from which the photoresist layer (6) is removed at the developing step, and carrying out washing to remove the photoresist layer (6) from the substrate (1).
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: March 2, 2004
    Assignee: Nippon Columbia Co., Ltd.
    Inventor: Takayuki Asukata
  • Stamper manufacturing method
    Publication number: 20020039705
    Abstract: It is an object to provide a stamper manufacturing method capable of shortening a time taken for manufacturing a stamper without requiring special equipment such as a dry etching device. The stamper manufacturing method comprises the steps of forming a photoresist layer (6) on one of surfaces of a conductive substrate (1), exposing a desirable portion of the photoresist layer (6), developing the photoresist layer (6), forming an electroforming body (8) on the substrate (1) in a portion from which the photoresist layer (6) is removed at the developing step, and carrying out washing to remove the photoresist layer (6) from the substrate (1).
    Type: Application
    Filed: September 24, 2001
    Publication date: April 4, 2002
    Inventor: Takayuki Asukata