Patents by Inventor Hisato Maeda

Hisato Maeda 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: 9394638
    Abstract: A non-woven fabric which is excellent in thermal resistance, mechanical strength, and thermal dimensional stability for applications exposed to high temperature circumstance and has an extremely large surface area and exhibit an excellent filter performance is obtained. The non-woven fabric is composed of polyimide fibers which are obtained by polycondensation of at least an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure and have a fiber diameter in the range of 0.001 ?m to 1 ?m. The non-woven fabric is obtained by the steps of preparing a polyamic acid by polycondensation of an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure, and electro-spinning the polyamic acid to form a polyimide precursor non-woven fabric; and imidizing a polyimide precursor fiber bundle.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: July 19, 2016
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Masahiko Nakamori, Satoshi Maeda, Tooru Kitagawa, Hisato Kobayashi, Yasuo Ohta
  • Patent number: 9385333
    Abstract: A process for producing a thin film field-effect transistor includes providing a gate electrode, a gate insulating film, and source and drain electrodes, treating entire surfaces of the source and drain electrodes with a mixture of sulfuric acid and hydrogen peroxide, and providing an organic electronic material layer containing an organic electronic material on the gate insulating film to be in electrical contact with the source and drain electrodes. A reaction product of the organic electronic material, sulfuric acid and hydrogen peroxide containing a sulfonated product of the organic electronic material is present only at an interface between the source electrode and the organic electronic material layer and an interface between the drain electrode and the organic electronic material layer to thereby increase the electroconductivity of the organic electronic material and reduce a charge injection barrier from the source electrode to the organic electronic material.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: July 5, 2016
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Takahiko Maeda, Haruo Kawakami, Hisato Kato, Nobuyuki Sekine, Kyoko Kato
  • Patent number: 8126288
    Abstract: An image processing apparatus includes a storing section which stores data of a digital image, a rotation processing section which generates a plurality of rotated digital images having different rotation angles from the digital image, an image processing section which generates a plurality of image-processed digital images from the rotated digital images, a reverse processing section which generates a plurality of reversed digital images from the image-processed digital images, and a combining section which combines the reversed digital images into one digital image.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: February 28, 2012
    Assignees: A school juridical person Fujita Educational Institution, Toshiba Medical Systems Corporation
    Inventors: Hisato Maeda, Yoshimasa Kobayashi, Nobutoku Motomura
  • Publication number: 20100284584
    Abstract: An image processing apparatus includes: a cutoff frequency table storing information on a relation between a parameter related to a radial intensity distribution of two-dimensional frequency components of a projection image and a Butterworth filter cutoff frequency to be applied to the projection image concerned; a projection image data input unit for inputting projection image data; an FFT unit for applying a two-dimensional Fourier transform to the projection image to obtain a spatial frequency of the projection image; a radial intensity distribution calculation unit for calculating a radial intensity distribution of frequency components of the projection image; a cutoff frequency setting unit for setting a cutoff frequency corresponding to a parameter related to the radial intensity distribution determined for the projection image, with reference to the cutoff frequency table; and a Butterworth filter for filtering the projection image data with the set cutoff frequency.
    Type: Application
    Filed: August 6, 2008
    Publication date: November 11, 2010
    Applicant: NIHON MEDI-PHYSICS CO., LTD.
    Inventors: Hisato Maeda, Noriyasu Yamaki
  • Patent number: 7420176
    Abstract: A SPECT apparatus has a two-dimensional detector that detects radiations from RIs in a patient via a collimator. A correction processing unit corrects plural two-dimensional projection distributions with different projection angles, which are detected by the detector, on a three-dimensional frequency space according to plural correction functions corresponding to plural distances, respectively. Consequently, a fall in spatial resolution having dependency on distances between the respective RIs and the detector is reduced. A reconfiguring unit reconfigures a three-dimensional RI distribution from the plural two-dimensional projection distributions corrected.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: September 2, 2008
    Assignee: Fujita Educational Institution
    Inventors: Nobutoku Motomura, Hisato Maeda
  • Publication number: 20080181478
    Abstract: An image processing apparatus includes a storing section which stores data of a digital image, a rotation processing section which generates a plurality of rotated digital images having different rotation angles from the digital image, an image processing section which generates a plurality of image-processed digital images from the rotated digital images, a reverse processing section which generates a plurality of reversed digital images from the image-processed digital images, and a combining section which combines the reversed digital images into one digital image.
    Type: Application
    Filed: January 30, 2008
    Publication date: July 31, 2008
    Inventors: Hisato Maeda, Yoshimasa Kobayashi, Nobutoku Motomura
  • Publication number: 20080091102
    Abstract: An image processing apparatus (1) comprises: a projection image data input unit (10) for inputting nuclear medicine image data; a Butterworth filter (12) for filtering the nuclear medicine image data; and a cutoff frequency setting unit (20) for setting a cutoff frequency of the Butterworth filter (12). The cutoff frequency setting unit (20) has an optimum cutoff frequency table (22) storing a relation between counts in nuclear medicine image data and an optimum cutoff frequency. The image processing apparatus (1) determines counts in the nuclear medicine image data, determines based on the optimum cutoff frequency table (22) a cutoff frequency corresponding to the determined counts, and sets a cutoff frequency of the Butterworth filter (12) at the determined cutoff frequency.
    Type: Application
    Filed: September 18, 2007
    Publication date: April 17, 2008
    Inventors: Hisato Maeda, Noriyasu Yamaki
  • Publication number: 20060078082
    Abstract: A SPECT apparatus has a two-dimensional detector that detects radiations from RIs in a patient via a collimator. A correction processing unit corrects plural two-dimensional projection distributions with different projection angles, which are detected by the detector, on a three-dimensional frequency space according to plural correction functions corresponding to plural distances, respectively. Consequently, a fall in spatial resolution having dependency on distances between the respective RIs and the detector is reduced. A reconfiguring unit reconfigures a three-dimensional RI distribution from the plural two-dimensional projection distributions corrected.
    Type: Application
    Filed: October 6, 2005
    Publication date: April 13, 2006
    Inventors: Nobutoku Motomura, Hisato Maeda