Patents by Inventor Hisatake Sano

Hisatake Sano 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).

  • Patent number: 8038431
    Abstract: An imprint mold including a substrate of transparent material having a first principal surface having a pattern region and a second principal surface; a first light shielding film provided on the first principal surface, along a periphery of the pattern region; and a second light shielding film provided on the second principal surface, having an opening including an opposite region to the pattern region, a part of the second light shielding film opposite to the first light shielding film. In a cross section perpendicular to the substrate, the maximum incident angle of the light for curing a transfer layer to the second principal surface is less than an angle between a perpendicular line of the second principal surface and a line connecting an end of the second light shielding film on a side of the opening and a farthest end of the first light shielding film from the pattern region.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: October 18, 2011
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hisatake Sano, Yuki Aritsuka, Morihisa Hoga, Hiroshi Fujita
  • Publication number: 20100189839
    Abstract: An imprint mold including a substrate of transparent material having a first principal surface having a pattern region and a second principal surface; a first light shielding film provided on the first principal surface, along a periphery of the pattern region; and a second light shielding film provided on the second principal surface, having an opening including an opposite region to the pattern region, a part of the second light shielding film opposite to the first light shielding film. In a cross section perpendicular to the substrate, the maximum incident angle of the light for curing a transfer layer to the second principal surface is less than an angle between a perpendicular line of the second principal surface and a line connecting an end of the second light shielding film on a side of the opening and a farthest end of the first light shielding film from the pattern region.
    Type: Application
    Filed: June 30, 2008
    Publication date: July 29, 2010
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Hisatake Sano, Yuki Aritsuka, Morihisa Hoga, Hiroshi Fujita
  • Patent number: 7582393
    Abstract: It is an object of the present invention to effectively manufacture a charged-particle beam lithography mask, an X-ray lithography mask, or an extreme ultraviolet beam lithography mask by using, for example, an existing writer such as an electron beam writer for photomasks, while achieving improvement in processing accuracy of a mask pattern. A lithography mask (1) comprises a substrate (2) which has a lower surface provided substantially at the center thereof with an opening (3) and a self-supporting membrane (m) having a pattern region (4) substantially at the center of an upper surface of the substrate (2) corresponding to the opening (3). The self-supporting membrane (m) is provided with through-holes (h) of a mask pattern in it or an absorber or scatterer of a mask pattern on it, and the pattern region (4) and a peripheral region around the pattern region (5) are in one plane.
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: September 1, 2009
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hisatake Sano, Morihisa Hoga, Yukio Iimura, Yuki Aritsuka, Masaaki Kurihara, Hiroshi Nozue, Akira Yoshida
  • Publication number: 20060068298
    Abstract: It is an object of the present invention to effectively manufacture a charged-particle beam lithography mask, an X-ray lithography mask, or an extreme ultraviolet beam lithography mask by using, for example, an existing writer such as an electron beam writer for photomasks, while achieving improvement in processing accuracy of a mask pattern. A lithography mask (1) comprises a substrate (2) which has a lower surface provided substantially at the center thereof with an opening (3) and a self-supporting membrane (m) having a pattern region (4) substantially at the center of an upper surface of the substrate (2) corresponding to the opening (3). The self-supporting membrane (m) is provided with through-holes (h) of a mask pattern in it or an absorber or scatterer of a mask pattern on it, and the pattern region (4) and a peripheral region around the pattern region (5) are in one plane.
    Type: Application
    Filed: December 1, 2003
    Publication date: March 30, 2006
    Inventors: Hisatake Sano, Morihisa Hoga, Yukio Iimura, Yuki Aritsuka, Masaaki Kurihara, Hiroshi Nozue, Akira Yoshida