Patents by Inventor Yoshiaki Hirooka

Yoshiaki Hirooka 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: 11951931
    Abstract: A gas generator includes, a housing having a first container including a first bottom surface portion and a second container including a second bottom surface portion, the housing being formed by joining the first container and the second container, and an igniter attached to a mounting hole formed in the second bottom surface portion of the second container, the mounting hole including a passing region in the mounting hole, through which the igniter is passing, and a tip region around the passing region, the tip region being located, in a radial direction of the housing, outside an imaginary outer contour line when the igniter is projected onto the second bottom surface portion, in which paired edge portions intersect with each other to form a tip portion having a convex shape protruding outward in the radial direction of the housing on the outermost side of the region.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: April 9, 2024
    Assignee: DAICEL CORPORATION
    Inventors: Yoshiaki Nishikawa, Masato Hirooka
  • Patent number: 7692669
    Abstract: If there is any unprocessed character area, and if there is any character area sharing a common character color with the unprocessed character area, the image processing apparatus calculates, as a first number, the total number of the pixels included in these two character areas. The image processing apparatus also calculates, as a second number, the number of pixels included in an area formed by integrating the two character areas. Then, the image processing apparatus judges whether the ratio of the first number to the second number is less than a predetermined threshold value. In other words, the image processing apparatus judges whether the following is satisfied: Second Number/First Number<Threshold Value If this is satisfied, the image processing apparatus integrates the areas, and also integrates the attribute information.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: April 6, 2010
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventor: Yoshiaki Hirooka
  • Publication number: 20090316998
    Abstract: A contour pixel is extracted from binarized image data. The contour of the image data is approximated to a straight line based on the extracted contour pixel. It is determined whether a first straight line in the contour obtained by the straight-line approximation includes a portion to be kept straight in the curved-line approximation, based on the relationship between the first straight line and a second straight line connected to the first straight line. In a case where it is determined that the first straight line includes a portion to be kept straight, curved-line approximation is performed by setting a control point on the first straight line at a position closer to an end of the first straight line connected to the second straight line with respect to a midpoint of the first straight line.
    Type: Application
    Filed: June 19, 2009
    Publication date: December 24, 2009
    Applicant: Konica Minolta Business Technologies, Inc.
    Inventors: Yoshiaki Hirooka, Koji Usui
  • Publication number: 20080036774
    Abstract: If there is any unprocessed character area, and if there is any character area sharing a common character color with the unprocessed character area, the image processing apparatus calculates, as a first number, the total number of the pixels included in these two character areas. The image processing apparatus also calculates, as a second number, the number of pixels included in an area formed by integrating the two character areas. Then, the image processing apparatus judges whether the ratio of the first number to the second number is less than a predetermined threshold value. In other words, the image processing apparatus judges whether the following is satisfied: Second Number/First Number<Threshold Value If this is satisfied, the image processing apparatus integrates the areas, and also integrates the attribute information.
    Type: Application
    Filed: December 19, 2006
    Publication date: February 14, 2008
    Applicant: Konica Minolta Business Technologies, Inc.
    Inventor: Yoshiaki Hirooka
  • Patent number: 6369916
    Abstract: An apparatus to judge, on the basis of image data indicative of the densities of individual pixels in a document original image, whether or not a judgment area in the document original image is a dot area. The apparatus includes: a dot candidate pixel detecting section for detecting a dot candidate pixel on the basis of image data for a plurality of lines; an extension processing section for extensively applying a dot candidate pixel detection result for an object line to lines adjacent to the object line; and a dot area judging section for judging, on the basis of the distribution of dot candidate pixels within a judgment base area, that a judgment area having a predetermined positional relationship with the judgment base area is a dot area.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: April 9, 2002
    Assignee: Kyocera Mita Corporation
    Inventor: Yoshiaki Hirooka