Patents by Inventor Tetsuzo Ito

Tetsuzo Ito 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: 9539057
    Abstract: A laser irradiation tip has a main body and a tip end portion. The main body is connected with a handpiece and irradiating therapeutic laser with high absorbability in water. The tip end portion being connected with the main body. The main body of the laser irradiation tip has an optical fiber for guiding the therapeutic laser, a water flow path, and an air flow path in a parallel manner. The tip end portion of the laser irradiation tip has a connection portion with the main body, a water guide path communicated with the water flow path of the main body, an air guide path communicated with the air flow path of the main body, a fiber guide portion capable of inserting a tip side portion of the optical fiber, and a mixing chamber of water and air.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: January 10, 2017
    Assignee: J. Morita Manufacturing Corporation
    Inventors: Kazunori Hamada, Mikinori Nishimura, Masaki Odaka, Tetsuzo Ito
  • Publication number: 20160379360
    Abstract: A three-dimensional model corresponding to a work and a virtual surface corresponding to an imaging device are specified. The model is projected onto the virtual surface, to calculate boundary pixels constituting an outline of a projected region. A coordinate position of the boundary pixel is converted, according to a distortion adding table including a plural table elements each associated to a coordinate position of the pixel at a start point of moving, with a moving distance of the pixel at the start point of moving regarding a destination of moving. An inside surrounded by boundary pixels of the coordinate positions converted is set as an inspection region. The inside of the inspection region in the image is inspected. The plural table elements include a first table element associating to one moving distance with one coordinate position. A second table element associated to plural moving distances with one coordinate position.
    Type: Application
    Filed: June 17, 2016
    Publication date: December 29, 2016
    Inventor: Tetsuzo Ito
  • Patent number: 8920166
    Abstract: The present invention provides a root canal length measuring apparatus and a root canal treatment apparatus which can acquire a position of a measurement electrode with high reproducibility in the same root canal. The root canal length measuring apparatus includes a measurement electrode which is inserted into a root canal, an oral electrode which is held in an oral cavity, a measuring section which applies an electric measuring signal between the measurement electrode and the oral electrode and specifies an apex position so as to measure a root canal length, a memory means which stores position data corresponding to a position of the measurement electrode in a root canal acquired by the measuring section, and an operating means which instructs the memory means to store the position data.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: December 30, 2014
    Assignee: J. Morita Manufacturing Corporation
    Inventors: Seiichiro Yamashita, Hiroaki Kusakabe, Kazunari Matoba, Tetsuzo Ito
  • Publication number: 20130289548
    Abstract: A laser irradiation tip has a main body and a tip end portion. The main body is connected with a handpiece and irradiating therapeutic laser with high absorbability in water. The tip end portion being connected with the main body. The main body of the laser irradiation tip has an optical fiber for guiding the therapeutic laser, a water flow path, and an air flow path in a parallel manner. The tip end portion of the laser irradiation tip has a connection portion with the main body, a water guide path communicated with the water flow path of the main body, an air guide path communicated with the air flow path of the main body, a fiber guide portion capable of inserting a tip side portion of the optical fiber, and a mixing chamber of water and air.
    Type: Application
    Filed: April 25, 2013
    Publication date: October 31, 2013
    Applicant: J. MORITA MANUFACTURING CORPORATION
    Inventors: Kazunori Hamada, Mikinori Nishimura, Masaki Odaka, Tetsuzo Ito
  • Patent number: 8538110
    Abstract: A medical X-ray CT imaging apparatus, a medical X-ray CT image display device, and a medical X-ray CT image display method which perform CT imaging of living organs symmetrically located with respect to a predetermined plane and display CT images thereof. This is a method of displaying a medical X-ray CT image, where a CT image obtained by X-ray CT imaging, using a cone beam (B), of a first living organ and a second living organ which are symmetrically located with respect to the predetermined plane. In the present invention, the CT image of the first living organ and that of the second living organ are displayed for comparison on one display screen of a display means.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: September 17, 2013
    Assignee: J. Morita Manufacturing Corporation
    Inventors: Teruji Nakai, Kouji Yasuda, Tetsuzo Ito
  • Patent number: 8401267
    Abstract: A medical X-ray CT imaging apparatus is capable of performing efficient CT imaging of living organs symmetrically located with respect to a predetermined plane.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: March 19, 2013
    Assignee: J. Morita Manufacturing Corporation
    Inventors: Teruji Nakai, Kouji Yasuda, Tetsuzo Ito
  • Patent number: 8254520
    Abstract: An object of the present invention is to provide an image processing method, etc. capable of producing a panorama tomogram with a simple operation whenever required by the operator. The present invention relates to an image processing method for producing a panorama tomogram of the dental arch using the X-ray projection data on the dentomaxillofacial region obtained by the X-ray computer tomography. The image processing method according to the present invention includes the steps of retrieving the dental arch projection data corresponding to the dental arch from the X-ray projection data based on the preset position and shape information to specify the position and shape of the dental arch from the X-ray projection data (S3) and generating a panorama tomogram by executing a predetermined process using the dental arch projection data (S4).
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: August 28, 2012
    Assignee: J. Morita Manufacturing Corporation
    Inventors: Tomoyuki Sadakane, Masakazu Suzuki, Hideki Yoshikawa, Teruji Nakai, Tetsuzo Ito
  • Publication number: 20110044520
    Abstract: A medical X-ray CT imaging apparatus is capable of performing efficient CT imaging of living organs symmetrically located with respect to a predetermined plane.
    Type: Application
    Filed: April 28, 2009
    Publication date: February 24, 2011
    Inventors: Teruji Nakai, Kouji Yasuda, Tetsuzo Ito
  • Publication number: 20110038519
    Abstract: A medical X-ray CT imaging apparatus, a medical X-ray CT image display device, and a medical X-ray CT image display method which perform CT imaging of living organs symmetrically located with respect to a predetermined plane and display CT images thereof. This is a method of displaying a medical X-ray CT image, where a CT image obtained by X-ray CT imaging, using a cone beam (B), of a first living organ and a second living organ which are symmetrically located with respect to the predetermined plane. In the present invention, the CT image of the first living organ and that of the second living organ are displayed for comparison on one display screen of a display means.
    Type: Application
    Filed: April 30, 2009
    Publication date: February 17, 2011
    Applicant: J.MORITA MANUFACTURING CORPORATION
    Inventors: Teruji Nakai, Kouji Yasuda, Tetsuzo Ito
  • Publication number: 20090052617
    Abstract: An object of the present invention is to provide an image processing method, etc. capable of producing a panorama tomogram with a simple operation whenever required by the operator. The present invention relates to an image processing method for producing a panorama tomogram of the dental arch using the X-ray projection data on the dentomaxillofacial region obtained by the X-ray computer tomography. The image processing method according to the present invention includes the steps of retrieving the dental arch projection data corresponding to the dental arch from the X-ray projection data based on the preset position and shape information to specify the position and shape of the dental arch from the X-ray projection data (S3) and generating a panorama tomogram by executing a predetermined process using the dental arch projection data (S4).
    Type: Application
    Filed: February 7, 2008
    Publication date: February 26, 2009
    Inventors: Tomoyuki Sadakane, Masakazu Suzuki, Hideki Yoshikawa, Teruji Nakai, Tetsuzo Ito
  • Publication number: 20090004374
    Abstract: A mirror used for a laser beam, said mirror includes a substrate, an aluminum layer formed on the substrate, a dielectric layer formed on the aluminum layer, and an aluminum oxide layer provided between the aluminum layer and the dielectric layer, wherein said aluminum oxide layer has an optical thickness nd of 3.7 nm or more, where n is a refractive index for a using wavelength and d is a physical thickness.
    Type: Application
    Filed: July 11, 2008
    Publication date: January 1, 2009
    Applicant: Canon Kabushiki Kaisha
    Inventor: TETSUZO ITO
  • Publication number: 20080241783
    Abstract: The present invention provides a root canal length measuring apparatus and a root canal treatment apparatus which can acquire a position of a measurement electrode with high reproducibility in the same root canal. The root canal length measuring apparatus includes a measurement electrode which is inserted into a root canal, an oral electrode which is held in an oral cavity, a measuring section which applies an electric measuring signal between the measurement electrode and the oral electrode and specifies an apex position so as to measure a root canal length, a memory means which stores position data corresponding to a position of the measurement electrode in a root canal acquired by the measuring section, and an operating means which instructs the memory means to store the position data.
    Type: Application
    Filed: March 13, 2008
    Publication date: October 2, 2008
    Inventors: Seiichiro Yamashita, Hiroaki Kusakabe, Kazunari Matoba, Tetsuzo Ito
  • Publication number: 20080182223
    Abstract: The invention intends to provide a dental diagnostic device capable of detecting whether or not an electric leakage path which departs from a root canal, bypassing an apex is contained in a conductive path. The dental diagnostic device includes a measuring electrode, an oral electrode, a measurement signal applying means, a measuring means and a detecting means. The measuring electrode is inserted into a root canal of a tooth which is a diagnosing object. The oral electrode is brought into electric contact with oral mucosa. The measurement signal applying means applies a measurement signal in between the measuring electrode and the oral electrode. The measuring means obtains data corresponding to the electric characteristic of at least part of a conductive path between the measuring electrode and the oral electrode based on measurement of electric response to the measurement signal.
    Type: Application
    Filed: October 30, 2007
    Publication date: July 31, 2008
    Inventors: Seiichiro Yamashita, Hiroaki Kusakabe, Kazunari Matoba, Tetsuzo Ito
  • Publication number: 20060170890
    Abstract: A mirror used for a laser beam, said mirror includes a substrate, an aluminum layer formed on the substrate, a dielectric layer formed on the aluminum layer, and an aluminum oxide layer provided between the aluminum layer and the dielectric layer, wherein said aluminum oxide layer has an optical thickness nd of 3.7 nm or more, where n is a refractive index for a using wavelength and d is a physical thickness.
    Type: Application
    Filed: January 27, 2006
    Publication date: August 3, 2006
    Inventor: Tetsuzo Ito