Patents by Inventor Hiroshi Kubota

Hiroshi Kubota 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: 8691579
    Abstract: A method of obtaining a mixture of cells enriched in hepatic progenitors is developed which comprises methods yielding suspensions of a mixture of cell types, and selecting those cells that are classical MHC class I antigen(s) negative and ICAM-1 antigen positive. The weak or dull expression of nonclassical MHC class I antigen(s) can be used for further enrichment of hepatic progenitors. Furthermore, the progenitors can be selected to have a level of side scatter, a measure of granularity or cytoplasmic droplets, that is higher than that in non-parenchymal cells, such as hemopoietic cells, and lower than that in mature parenchymal cells, such as hepatocytes. Furthermore, the progeny of the isolated progenitors can express alpha-fetoprotein and/or albumin and/or CK19. The hepatic progenitors, so isolated, can grow clonally, that is an entire population of progeny can be derived from one cell. The clones of progenitors have a growth pattern in culture of piled-up aggregates or clusters.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: April 8, 2014
    Assignee: University of North Carolina at Chapel Hill
    Inventors: Hiroshi Kubota, Lola M. Reid
  • Patent number: 8684589
    Abstract: According to one embodiment, an LED lamp includes a housing, a base, an LED module, an LED lighting circuit board, and a globe. The base is attached to one end of the housing, and is supplied with electric power. The LED module is attached to the other end of the housing, and is equipped with LEDs. The LED lighting circuit board is accommodated in the housing, and the LED lighting circuit board is equipped with a lighting circuit. The globe covers the LEDs, and diffuses and radiates light emitted from the LEDs, and is attached to the housing. The housing is formed of resin having high thermal conductivity containing carbon-based filler. The light emitting module is attached to the housing through a heat transfer plate a part of which is exposed from the housing.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: April 1, 2014
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Takeshi Hisayasu, Shinji Nakata, Hiroshi Kubota
  • Patent number: 8667847
    Abstract: An ultrasonic testing apparatus for a pipe end portion, which enables accurate ultrasonic testing, comprises an ultrasonic probe disposed under the pipe end portion. The probe 1 transmits ultrasonic waves to the pipe end portion and receives the ultrasonic waves therefrom. A probe holder houses the probe which is disposed under the pipe end portion to face the pipe end portion and follows the pipe rotation. The probe holder comprises a coupling medium reserver part that surrounds a space between the probe and the pipe end portion to contain a coupling medium therein and comprises a coupling medium reserver part body into which the coupling medium is supplied. An annular bellows part, which communicates with the reserver part body, can expand and contract vertically and an annular spacer, which is attached to the upper side of the bellows part and an upper surface thereof has a flat horizontal surface.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: March 11, 2014
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Kenji Fujiwara, Hiroshi Kubota, Tomoyuki Obata, Masaki Yamano
  • Publication number: 20140061761
    Abstract: According to one embodiment, a method for manufacturing a semiconductor device includes forming a plurality of electrode structures above a substrate. The method includes forming an insulating film on the plurality of electrode structures to make a gap between mutually-adjacent electrode structures. The method includes forming a silicon nitride film having compressive stress above the insulating film. The method includes forming a planarization film above the silicon nitride film. The method includes planarizing a surface of the planarization film by polishing by CMP (chemical mechanical polishing) method.
    Type: Application
    Filed: December 3, 2012
    Publication date: March 6, 2014
    Inventor: Hiroshi KUBOTA
  • Publication number: 20140036405
    Abstract: A metalized film capacitor includes metalized films, each of which is formed of an insulating film made of dielectric, and a vapor deposited metal electrode formed on an upper surface of the insulating film. An end of the vapor deposited metal electrode extends together with an end of the insulating film, and both the ends are connected to an electrode terminal. The vapor deposited metal electrode of the metalized film includes a center region and a low resistance section that is made of Al—Zn—Mg alloy. The low resistance section is disposed at an end of the electrode and is thicker than the center region. This metalized film capacitor has high humidity resistance.
    Type: Application
    Filed: May 29, 2012
    Publication date: February 6, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Hiroki Takeoka, Yukikazu Ohchi, Ryo Majima, Yukihiro Shimasaki, Hiroshi Fujii, Ryosuke Kamiura, Hiroshi Kubota, Yasuhiro Hiraki
  • Patent number: 8638050
    Abstract: In one embodiment, a DC power supply unit includes a DC power supply source; a load circuit connected to an output end of the DC power supply source; a load state detection device to detect a load voltage or an electric quantity corresponding to the load voltage; and a control device to receive the detected output of the load state detection device. The control device controls a maximum output voltage of the DC power supply source so that the voltage difference between the maximum output voltage of the DC power supply source and the load voltage at the time of normal operation falls within a predetermined range in which arc discharge is suppressed.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: January 28, 2014
    Assignee: Toshiba Lighting and Technology Corporation
    Inventors: Go Kato, Hiroshi Kubota, Masahiko Kamata, Hiroshi Terasaka, Tomokazu Usami, Naoko Iwai
  • Publication number: 20140022558
    Abstract: According to one embodiment, an optical device includes emission of an image projecting light source and emission of an optical path length measuring light source are provided by a light projecting device and respective beams are directed to a moveable mirror. In accordance with the movement of moveable mirror, an image projecting light scans a target and an image is displayed. Reflected light is scattered from the target and reaches a photodetector. By calculating the time difference of reference light and reflected light detected by the photodetector, the distance of the optical device and a reflection point of an optical path length measuring light is computed. By combining the computed optical path length data and angle data of the moveable mirror, the reflecting point of the optical path length measuring light is determined.
    Type: Application
    Filed: March 5, 2013
    Publication date: January 23, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroshi KUBOTA, Nobu MATSUMOTO, Mineharu UCHIYAMA, Keiichiro MORI, Hisao KAWASATO
  • Publication number: 20140016745
    Abstract: The method of steel grade determination for a steel material having a substantially circular cross-section comprise: a detection step in which while a measurement section 2 including an irradiation section 21 for performing X-ray irradiation and a detection section 22 for detecting fluorescent X-rays is relatively moved along an outer peripheral surface of the steel material 4 with respect to the steel material for a predetermined time period necessary for analysis, the steel material is irradiated with X-rays from the irradiation section, and fluorescent X-rays radiated from the steel material are detected by the detection section; a calculation step of calculating a composition of the steel material based on fluorescent X-rays detected in the detection step; and a determination step of determining a steel grade of the steel material according to the composition calculated in the calculation step.
    Type: Application
    Filed: January 19, 2012
    Publication date: January 16, 2014
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kenji Fujiwara, Hiroshi Kubota
  • Publication number: 20140009865
    Abstract: A metallized film capacitor includes a dielectric film and two metal vapor-deposition electrodes facing each other across the dielectric film. At least one of the metal vapor-deposition electrodes is made of substantially only aluminum and magnesium. This metallized film capacitor has superior leak current characteristics and moisture resistant performances, and can be used for forming a case mold type capacitor with a small size.
    Type: Application
    Filed: September 10, 2013
    Publication date: January 9, 2014
    Applicant: Panasonic Corporation
    Inventors: Hiroki TAKEOKA, Hiroshi KUBOTA, Yukikazu OHCHI, Hiroshi FUJII, Yukihiro SHIMASAKI
  • Publication number: 20130276540
    Abstract: An ultrasonic testing apparatus includes an ultrasonic probe disposed under an end portion of a pipe laid in the horizontal direction to face the pipe end portion. The probe transmits ultrasonic waves to the end portion of the pipe and receives the ultrasonic waves therefrom. A probe holder housing the probe includes a coupling medium reserver part which surrounds a space between the probe and the end portion of the pipe to contain a coupling medium W. The coupling medium reserver part includes a part body 21 into which the coupling medium is supplied; an annular bellows part, which is attached to the upper side of the part body to internally communicate with the part body, and an annular spacer 23 attached to the upper side of the bellows part, the upper surface of the annular spacer being a flat horizontal surface.
    Type: Application
    Filed: October 18, 2012
    Publication date: October 24, 2013
    Inventors: Kenji FUJIWARA, Hiroshi Kubota, Tomoyuki Obata, Masaki Yamano
  • Patent number: 8559161
    Abstract: A metallized film capacitor includes a dielectric film and two metal vapor-deposition electrodes facing each other across the dielectric film. At least one of the metal vapor-deposition electrodes is made of substantially only aluminum and magnesium. This metallized film capacitor has superior leak current characteristics and moisture resistant performances, and can be used for forming a case mold type capacitor with a small size.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: October 15, 2013
    Assignee: Panasonic Corporation
    Inventors: Hiroki Takeoka, Hiroshi Kubota, Yukikazu Ohchi, Hiroshi Fujii, Yukihiro Shimasaki
  • Patent number: 8451579
    Abstract: A metalized film capacitor includes a first dielectric film, a first metal thin-film electrode provided on a surface of the first dielectric film, a second dielectric film provided on the first metal thin-film electrode, and a second metal thin-film electrode provided on the second dielectric film, such that the second metal thin-film electrode faces the first metal thin-film electrode across the second dielectric film. The surface of the first dielectric film has a surface energy ranging from 25 mN/m to 40 mN/m. The metalized film capacitor exhibits high heat resistance and a preferable self-healing effect.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: May 28, 2013
    Assignee: Panasonic Corporation
    Inventors: Hiroki Takeoka, Hiroshi Kubota, Hiroshi Fujii, Yukikazu Ohchi, Yukihiro Shimasaki
  • Publication number: 20130107521
    Abstract: According to one embodiment, an LED lamp includes a housing, a base, an LED module, an LED lighting circuit board, and a globe. The base is attached to one end of the housing, and is supplied with electric power. The LED module is attached to the other end of the housing, and is equipped with LEDs. The LED lighting circuit board is accommodated in the housing, and the LED lighting circuit board is equipped with a lighting circuit. The globe covers the LEDs, and diffuses and radiates light emitted from the LEDs, and is attached to the housing. The housing is formed of resin having high thermal conductivity containing carbon-based filler. The light emitting module is attached to the housing through a heat transfer plate a part of which is exposed from the housing.
    Type: Application
    Filed: September 10, 2012
    Publication date: May 2, 2013
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventors: Takeshi Hisayasu, Shinji Nakata, Hiroshi Kubota
  • Patent number: 8422157
    Abstract: According to one embodiment, a magnetic disk medium is pre-formatted on both the surfaces by magnetic transfer. Sectors with the same sector number on the front surface and the rear surface of the magnetic disk medium are arranged at positions shifted by a predetermined angle associated in advance with determination target information.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: April 16, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroyuki Suzuki, Hiroshi Kubota
  • Patent number: 8415889
    Abstract: Certain embodiments provide an LED lighting equipment including a lighting main body. An LED power device has a DC power source and a DC-DC converter having an input terminal connected to the DC power source and the DC-DC converter having an output terminal. An LED light source has a board and a plurality of LED packages; each including a plurality of LED chips connected in series. The LED packages are mounted on the board and connected in series to the output terminal of the DC-DC converter.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: April 9, 2013
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Takuro Hiramatsu, Masahiko Kamata, Hiroshi Kubota, Hiroshi Terasaka, Toshiyuki Hiraoka
  • Publication number: 20130083424
    Abstract: A magnetic disk device includes a magnetic disk on which servo information is recorded, a head to read the servo information of the magnetic disk, and a position control module. When carrying out positioning control of the head, the position control module estimates frequency components of noise in a head positioning control process, using a high-order digital filter that includes first and second variable coefficients that are each based on position error information generated from the servo information read by the head.
    Type: Application
    Filed: September 7, 2012
    Publication date: April 4, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masafumi IWASHIRO, Takao ABE, Hiroshi KUBOTA, Kazuhiko TAKAISHI
  • Patent number: 8412079
    Abstract: A toner cartridge includes a container body and a screw conveyer section. The screw conveyer section includes a rotation shaft and a toner conveying blade. The toner rotation shaft includes a first rotation shaft portion and a second rotation shaft portion concentrically communicated to the first rotation shaft portion and having a diameter smaller than that of the first rotation shaft portion. The toner conveying blade includes a first blade portion formed on the first rotation shaft portion, and a second blade portion formed on the second rotation shaft portion, a period of a spiral of the second blade portion winding around the second rotation shaft portion being smaller than a period of a spiral of the first blade portion winding around the first rotation shaft portion.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: April 2, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroshi Kubota, Takeshi Okuda
  • Patent number: 8393218
    Abstract: An ultrasonic testing apparatus 100 comprises an ultrasonic probe 1 including n (n?2) number of transducers arranged along a predetermined direction, disposed so as to face a test object P, and a transmission/reception control device 2 for selecting m (n>m?1) number of transducers from among the n number of transducers, transmitting ultrasonic waves from the selected m number of transducers toward the test object, receiving the ultrasonic waves therefrom, and switched m number of transducers to b selected successively. If an angle that the arrangement direction of the transducers makes with the surface of the test object which ultrasonic waves enter is ?, and the effective beam width of each selected m number of transducers with respect to a target flaw is W1, the transmission/reception control device switches m number of transducers to be selected successively by a switching pitch length P satisfying the formula: P?W1·cos ?.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: March 12, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Masaki Yamano, Masami Ikeda, Kenji Fujiwara, Hiroshi Kubota
  • Publication number: 20130048501
    Abstract: One aspect of the present invention is a laminated coating film structure having a laminated coating film that renders a specific color on a coated object, wherein the laminated coating film is provided with a first layer arranged on the side close to the coated object and containing a pigment in which the mean particle diameter is ½ or more the wavelength of the specific color but 2 um or less, and a second layer arranged on the side far from the coated object and containing a pigment in which the mean particle diameter is 0.05 um or more but less than ½ the wavelength of the specific color.
    Type: Application
    Filed: May 13, 2011
    Publication date: February 28, 2013
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Takakazu Yamane, Hiroshi Kubota, Sakura Nakano, Takako Ishibashi
  • Patent number: 8368801
    Abstract: There are provided a camera system and an interchangeable lens that are compatible with a contrast detection method. A camera system (1) has an interchangeable lens unit (2) and a camera body (3). A lens microcomputer (40) changes the movable range of a second lens group (L2) via a focus lens drive controller (41) depending on whether a second holder (61) is driven by the focus lens drive controller (41) and a focus motor (80) on the basis of angle information inputted to a zoom ring (64) of the interchangeable lens unit (2), or the second holder (61) is driven by the focus lens drive controller (41) on the basis of contrast information.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: February 5, 2013
    Assignee: Panasonic Corporation
    Inventors: Takeo Santo, Naoto Yumiki, Yoshito Miyatake, Hiroshi Kubota