Patents by Inventor Isamu Higashioka

Isamu Higashioka 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).

  • Code disk with a plurality of tracks having different patterns
    Patent number: 7907505
    Abstract: A code disk for a high-resolution encoder that can detect an absolute position and a method for manufacturing a mold to produce the code disk are provided. The code disk is formed by using transparent substrate. The code disk includes a plurality of tracks provided on the transparent substrate and an area provided between the plurality of tracks. Each surface of the plurality of tracks has a different pattern. A level of the area is different from that of the each surface of the plurality of tracks. The method for manufacturing the mold includes steps of processing a plurality of tracks with a flat surface on material; processing an area with a level different from that of each surface, between the plurality of tracks; forming different patterns on the each surface; plating the first material; and peeling plating from the first material to obtain a mold.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: March 15, 2011
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masahiko Sakamoto, Katsutoshi Kamakura, Masahiro Otani, Yasushi Kawashima, Isamu Higashioka, Masaru Imaizumi, Osamu Murakami, Koichi Sugimoto
  • CODE DISK WITH A PLURALITY OF TRACKS HAVING DIFFERENT PATTERNS
    Publication number: 20100009072
    Abstract: A code disk for a high-resolution encoder that can detect an absolute position and a method for manufacturing a mold to produce the code disk are provided. The code disk is formed by using transparent substrate. The code disk includes a plurality of tracks provided on the transparent substrate and an area provided between the plurality of tracks. Each surface of the plurality of tracks has a different pattern. A level of the area is different from that of the each surface of the plurality of tracks. The method for manufacturing the mold includes steps of processing a plurality of tracks with a flat surface on material; processing an area with a level different from that of each surface, between the plurality of tracks; forming different patterns on the each surface; plating the first material; and peeling plating from the first material to obtain a mold.
    Type: Application
    Filed: September 22, 2009
    Publication date: January 14, 2010
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masahiko Sakamoto, Koichi Sugimoto, Katsutoshi Kamakura, Masahiro Otani, Yasushi Kawashima, Isamu Higashioka, Masaru Imaizumi, Osamu Murakami
  • Code disk with a plurality of tracks having different patterns
    Patent number: 7612331
    Abstract: A code disk for a high-resolution encoder that can detect an absolute position and a method for manufacturing a mold to produce the code disk are provided. The code disk is formed by using transparent substrate. The code disk includes a plurality of tracks provided on the transparent substrate and an area provided between the plurality of tracks. Each surface of the plurality of tracks has a different pattern. A level of the area is different from that of the each surface of the plurality of tracks. The method for manufacturing the mold includes steps of processing a plurality of tracks with a flat surface on material; processing an area with a level different from that of each surface, between the plurality of tracks; forming different patterns on the each surface; plating the first material; and peeling plating from the first material to obtain a mold.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: November 3, 2009
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masahiko Sakamoto, Koichi Sugimoto, Katsutoshi Kamakura, Masahiro Otani, Yasushi Kawashima, Isamu Higashioka, Masaru Imaizumi, Osamu Murakami
  • Code disk with a plurality of tracks having different patterns
    Publication number: 20070147222
    Abstract: A code disk for a high-resolution encoder that can detect an absolute position and a method for manufacturing a mold to produce the code disk are provided. The code disk is formed by using transparent substrate. The code disk includes a plurality of tracks provided on the transparent substrate and an area provided between the plurality of tracks. Each surface of the plurality of tracks has a different pattern. A level of the area is different from that of the each surface of the plurality of tracks. The method for manufacturing the mold includes steps of processing a plurality of tracks with a flat surface on material; processing an area with a level different from that of each surface, between the plurality of tracks; forming different patterns on the each surface; plating the first material; and peeling plating from the first material to obtain a mold.
    Type: Application
    Filed: February 15, 2007
    Publication date: June 28, 2007
    Inventors: Masahiko Sakamoto, Koichi Sugimoto, Katsutoshi Kamakura, Masahiro Otani, Yasushi Kawashima, Isamu Higashioka, Masaru Imaizumi, Osamu Murakami
  • Code disk with a plurality of tracks having different patterns
    Patent number: 7193962
    Abstract: A code disk for a high-resolution encoder that can detect an absolute position and a method for manufacturing a mold to produce the code disk are provided. The code disk is formed by using transparent substrate. The code disk includes a plurality of tracks provided on the transparent substrate and an area provided between the plurality of tracks. Each surface of the plurality of tracks has a different pattern. A level of the area is different from that of the each surface of the plurality of tracks. The method for manufacturing the mold includes steps of processing a plurality of tracks with a flat surface on material; processing an area with a level different from that of each surface, between the plurality of tracks; forming different patterns on the each surface; plating the first material; and peeling plating from the first material to obtain a mold.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: March 20, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masahiko Sakamoto, Koichi Sugimoto, Katsutoshi Kamakura, Masahiro Otani, Yasushi Kawashima, Isamu Higashioka, Masaru Imaizumi, Osamu Murakami
  • Code disk with a plurality of tracks having different patterns
    Publication number: 20030137908
    Abstract: A code disk for a high-resolution encoder that can detect an absolute position and a method for manufacturing a mold to produce the code disk are provided. The code disk is formed by using transparent substrate. The code disk includes a plurality of tracks provided on the transparent substrate and an area provided between the plurality of tracks. Each surface of the plurality of tracks has a different pattern. A level of the area is different from that of the each surface of the plurality of tracks. The method for manufacturing the mold includes steps of processing a plurality of tracks with a flat surface on material; processing an area with a level different from that of each surface, between the plurality of tracks; forming different patterns on the each surface; plating the first material; and peeling plating from the first material to obtain a mold.
    Type: Application
    Filed: December 31, 2002
    Publication date: July 24, 2003
    Inventors: Masahiko Sakamoto, Koichi Sugimoto, Katsutoshi Kamakura, Masahiro Otani, Yasushi Kawashima, Isamu Higashioka, Masaru Imaizumi, Osamu Murakami