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).

  • Publication number: 20150125606
    Abstract: A method of forming an etching mask structure on an insulating film containing silicon and oxygen includes forming a first silicon film on the insulating film formed on a substrate, forming a reaction blocking layer on a surface layer of the first silicon film, forming a second silicon film on the reaction blocking layer; and forming a tungsten film by replacing silicon of the second silicon film with tungsten by supplying a process gas containing a tungsten compound onto the second silicon film.
    Type: Application
    Filed: October 30, 2014
    Publication date: May 7, 2015
    Inventors: Masahisa WATANABE, Hiroshi KUBOTA, Kazuaki CHIBA
  • Publication number: 20150093762
    Abstract: The present invention relates to precursor cells to hepatic stellate cells, compositions comprising same and methods of isolating same. The surface antigenic profile of the precursors is MHC class Ia negative, ICAM-1+, VCAM-1+, ?3-integrin+. In addition to expression of these surface markers, the cells also express the intracellular markers desmin, vimentin, smooth muscle ?-actin, nestin, hepatocyte growth factor, stromal derived factor-1? and Hlx homeobox transcriptional factor.
    Type: Application
    Filed: July 21, 2014
    Publication date: April 2, 2015
    Applicant: UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
    Inventors: HIROSHI KUBOTA, LOLA M. REID
  • Publication number: 20150092403
    Abstract: The disclosure is to provide a light emitting module that suppress a dark section from forming in an end portion thereof, a tube type light emitting lamp and a luminaire. The light emitting module includes a long substrate that has a connection member provided in an end portion thereof in a longitudinal direction; a first light emitting element that is provided on the substrate to line up in a row with the connection member in a short direction; and a second light emitting element that has a light emitting surface area larger than the first light emitting element, and is provided closer to a center side of the substrate in the longitudinal direction than the first light emitting element.
    Type: Application
    Filed: March 7, 2014
    Publication date: April 2, 2015
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventors: Tetsuya Ono, Hiroshi Kubota, Junichi Kimiya, Manabu Kika
  • Patent number: 8970127
    Abstract: A lighting circuit according to embodiments includes: a self-hold element connected in series to an AC power source that generates power for lighting an illumination load, together with the illumination load, the self-hold element being configured to control supply of the power provided by the AC power source to the illumination load by the self-hold element being turned on/off; a noise prevention circuit connected in parallel to the self-hold element; and a damping circuit configured to connect a damping resistance to the noise prevention circuit parallely only for a predetermined period from turning-on of the self-hold element, thereby preventing the self-hold element from being repeatedly turned on/off during a period in which the self-hold element is on under normal conditions, due to a transient during power supply.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: March 3, 2015
    Assignees: Toshiba Lighting & Technology Corporation, Kabushiki Kaisha Toshiba
    Inventors: Mitsuhiro Matsuda, Naoko Iwai, Hajime Osaki, Hiroshi Kubota, Takuro Hiramatsu, Katsusuke Uchino, Masatoshi Kumagai
  • Publication number: 20140376154
    Abstract: A metallized film capacitor includes first and second metal electrodes, a dielectric film disposed between the first and second metal electrodes, and first and second external electrodes which are connected to the first and second metal electrodes, respectively. At least one of the first metal electrode and the second metal electrode comprises magnesium. The magnesium is distributed unevenly in the at least one of the first metal electrode and the second metal electrode.
    Type: Application
    Filed: September 11, 2014
    Publication date: December 25, 2014
    Inventors: Hiroki TAKEOKA, Hiroshi KUBOTA, Yukikazu OHCHI, Hiroshi FUJII, Yukihiro SHIMASAKI
  • Patent number: 8903118
    Abstract: The present invention provides a dome diaphragm having high strength wholly and uniformly while maintaining a small thickness of a dome portion. A diaphragm 1 according to the present invention is a dome diaphragm including a dome portion 2. The dome portion 2 is divided into a plurality of small portions 4, and a ridge portion 7 is formed at a boundary of the small portions 4. In accordance with this configuration, the ridge portions 7 exist over the entire dome portion 2, and the ridge portions 7 can serve as frames for reinforcing the dome portion 2.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: December 2, 2014
    Assignee: TOA Corporation
    Inventors: Takeshi Fujita, Hiroshi Kubota
  • Publication number: 20140347780
    Abstract: A film capacitor includes a capacitor element and first and second external electrodes. The capacitor element includes a dielectric film, a first and a second electrode films facing each other across the dielectric film. The first electrode film includes electrode segments arranged in a matrix form, first fuses connecting the electrode segments adjacent to each other in a first direction, and second fuses connecting the electrode segments adjacent to each other in a second direction perpendicular to the first direction. The second fuses are arranged dispersedly in columns constituted by the electrode segments disposed in the second direction.
    Type: Application
    Filed: December 19, 2012
    Publication date: November 27, 2014
    Inventors: Hiroki Takeoka, Hidekazu Matsuoka, Hiroshi Kubota, Yasuhiro Hiraki, Masahito Sano
  • Patent number: 8861177
    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: September 10, 2013
    Date of Patent: October 14, 2014
    Assignee: Panasonic Corporation
    Inventors: Hiroki Takeoka, Hiroshi Kubota, Yukikazu Ohchi, Hiroshi Fujii, Yukihiro Shimasaki
  • Publication number: 20140302547
    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: Application
    Filed: April 3, 2014
    Publication date: October 9, 2014
    Applicant: University of North Carolina at Chapel Hill
    Inventors: HIROSHI KUBOTA, Lola M. Reid
  • Publication number: 20140294447
    Abstract: The image forming apparatus (1) includes a toner cartridge (71) between a front frame (78) or an front inside cover (79) and a front housing, and a cartridge attaching section (65) includes a shutter stopping section (65i) for opening a shutter (71c) by attachment of the toner cartridge (71) to the toner cartridge attaching section (65), and an IC chip fitting section (65c) to which an IC chip (75) is attached.
    Type: Application
    Filed: February 11, 2014
    Publication date: October 2, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yasuyuki ISHIGURO, Takeshi Okuda, Hiroshi Kubota, Eiji Tenjiku, Hisashi Kunihiro, Hitoshi Nagahama
  • Publication number: 20140294436
    Abstract: In an image forming apparatus, a fixing drive motor is positioned inside the image forming apparatus and closely to the front surface of the image forming apparatus so as to be laterally to toner cartridges and a waste toner box in a direction parallel to an outer surface of a front housing section.
    Type: Application
    Filed: March 21, 2014
    Publication date: October 2, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yasuyuki ISHIGURO, Takeshi OKUDA, Hiroshi KUBOTA, Hisashi KUNIHIRO, Eiji TENJIKU, Hitoshi NAGAHAMA
  • Patent number: 8778758
    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: Grant
    Filed: December 3, 2012
    Date of Patent: July 15, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hiroshi Kubota
  • Patent number: 8773808
    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: Grant
    Filed: September 7, 2012
    Date of Patent: July 8, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masafumi Iwashiro, Takao Abe, Hiroshi Kubota, Kazuhiko Takaishi
  • Patent number: 8773669
    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: Grant
    Filed: March 5, 2013
    Date of Patent: July 8, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroshi Kubota, Nobu Matsumoto, Mineharu Uchiyama, Keiichiro Mori, Hisao Kawasato
  • Publication number: 20140184259
    Abstract: Circuits and methods for testing wafers are disclosed herein. An embodiment of a method includes electrically contacting a first probe and a second probe to a wafer. A gas is blown in the areas proximate the first probe and the second probe. An electric potential is then applied between the first probe and the second probe while the gas is being blown.
    Type: Application
    Filed: January 2, 2013
    Publication date: July 3, 2014
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Takeki Andoh, Hiroshi Kubota
  • Publication number: 20140153249
    Abstract: An LED lamp according to an embodiment includes an LED module, a base body, a first globe, a second globe and a light guide body. In the LED module, a plurality of LEDs are mounted on a substrate. The base body holds the LED module. The first globe is arranged to surround the outer circumference of the substrate. A bore diameter (D2) of a first joining end is larger than a bore diameter (D1) of an attachment section. The second globe includes a second joining end attached to the first joining end and covers the emission side of the LEDs. A proximal end of the light guide body is fixed to a side where the LEDs are arranged. A distal end section of the light guide body has a diameter larger than the bore diameter (D1) of the attachment section of the first globe.
    Type: Application
    Filed: February 5, 2014
    Publication date: June 5, 2014
    Applicant: Toshiba Lighting & Technology Corporation
    Inventors: Takeshi Hisayasu, Hiroshi Kubota, Shinji Nakata, Makoto Sakai, Hiroshi Takenaga
  • Patent number: 8709800
    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: November 5, 2008
    Date of Patent: April 29, 2014
    Assignee: University of North Carolina at Chapel Hill
    Inventors: Hiroshi Kubota, Lola M. Reid
  • Patent number: 8707928
    Abstract: A lubrication apparatus for a four-stroke engine that prevents lubrication failure from occurring around the crankshaft and reliably prevents oil from remaining in a valve operating chamber includes: an intake part positioned below the level of an oil A in an oil reservoir even if the oil reservoir is tilted and the level of the oil A changes; an oil feeding passageway that sucks up the oil A from the intake part and supplies the oil A to the crank chamber; and an direct passageway that allows communication between a valve operating chamber and a crank chamber when a negative pressure is created in the crank chamber. Open end parts of the oil feeding passageway and the direct passageway which are open in the crank chamber are provided to open as the piston moves from a position near the top dead center to the top dead center.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: April 29, 2014
    Assignee: Makita Corporation
    Inventors: Masaki Sugiyama, Toshihiro Tomita, Masaki Kurimoto, Hiroshi Kubota, Tetsuya Hasegawa
  • Patent number: 8701622
    Abstract: A lubrication system for a portable four-stroke engine includes an opening end of the breather passage is disposed at substantially a center of a valve-operating chamber, and the valve-operating chamber is formed by attaching a valve-operating chamber cover. An inner cover is attached to an inner surface of the valve-operating chamber cover so as to be provided along and in contact with the inner surface of the valve-operating chamber cover. A suction passage is formed as a gap between the circumferential edge of the top plate portion and the inner cover. Three or more suction tubes that are in communication with the suction passage are provided in the inner cover, each of the suction tubes having an opening end. At least one of the opening ends of the suction tubes is provided lower than the opening end of the breather passage in an attitude of the engine during use.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: April 22, 2014
    Assignee: Makita Corporation
    Inventors: Masaki Sugiyama, Toshihiro Tomita, Masaki Kurimoto, Hiroshi Kubota
  • Patent number: 8695563
    Abstract: A lubrication system for a four cycle engine that lubricates the valve mechanism with the oil mist of the concentration, lowered by the liquefying means. The lubrication system has an oil feeding passage for connecting an oil reservoir with the crank chamber and sending the oil retained in liquid form in the oil reservoir to the crank chamber under a negative pressure of the crank chamber, a communication passage for connecting the crank chamber with the oil reservoir and sending oil mist generated in the crank chamber to the oil reservoir when under a positive pressure of the crank chamber, liquefying means in the oil reservoir for liquefying the oil mist sent from the communication passage to the oil reservoir to decrease the concentration of the oil mist, and a supply passage for supplying the oil mist from the oil reservoir to the valve operating chamber through the liquefying means.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: April 15, 2014
    Assignee: Makita Corporation
    Inventors: Masaki Sugiyama, Toshihiro Tomita, Masaki Kurimoto, Hiroshi Kubota