Patents by Inventor Masahiro Hayama

Masahiro Hayama 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: 20190078562
    Abstract: A displacement control valve improved in the function of discharging a liquid refrigerant in a control chamber at startup achieves a reduction in startup time and an improvement in operating efficiency during control of a variable displacement compressor simultaneously. An opening area between a third valve section and a third valve seat surface in a control area to control the flow rate or pressure in a working control chamber is set smaller than an area of an auxiliary communicating passage, thereby reducing the minimum area of a Pc-Ps flow path in the control area.
    Type: Application
    Filed: March 10, 2017
    Publication date: March 14, 2019
    Inventors: Masahiro HAYAMA, Hideki HIGASHIDOZONO, Kohei FUKUDOME, Daichi KURIHARA
  • Patent number: 10167978
    Abstract: A displacement control valve includes a valve housing, a valve element fitted in a guide passage of the valve housing, and a solenoid for driving the valve element to open and close it, a tapered portion is provided at one of an outer peripheral surface of the valve element and a guide surface of the guide passage, and a spiral groove is provided in the other, wherein the tapered portion is set such that a gap between the valve element and the guide passage is larger toward the low-pressure side than on the high-pressure side, and the tapered portion and the spiral groove are provided such that a starting point of the tapered portion is located within the region of the spiral groove in the entire range between the starting point and the ending point of the stroke of the valve element.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: January 1, 2019
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventors: Masahiro Hayama, Hideki Higashidozono, Masayuki Futakuchi, Kohei Fukudome
  • Publication number: 20180187793
    Abstract: The inflow of an external fluid into a mounting hole of a displacement control valve can be prevented, and accumulated gas in the mounting hole due to the permeation leakage of high-pressure gas can be discharged to the outside. A displacement control valve 1 inserted and fitted in a mounting hole 3 provided in a casing of a device controlled in displacement includes a sealing lip 46. The sealing lip 46 is fitted in a fitting section 41 at an outer peripheral portion of the displacement control valve 1 on a side close to an entrance of the mounting hole 3. The sealing lip 46 has a lip portion 46b abutting on an inner peripheral surface of the mounting hole 3.
    Type: Application
    Filed: November 18, 2015
    Publication date: July 5, 2018
    Applicant: EAGLE INDUSTRY CO., LTD.
    Inventors: Masayuki FUTAKUCHI, Kohei FUKUDOME, Masahiro HAYAMA, Hideki HIGASHIDOZONO
  • Publication number: 20170284562
    Abstract: A displacement control valve includes a valve housing, a valve element fitted in a guide passage of the valve housing, and a solenoid for driving the valve element to open and close it, a tapered portion is provided at one of an outer peripheral surface of the valve element and a guide surface of the guide passage, and a spiral groove is provided in the other, wherein the tapered portion is set such that a gap between the valve element and the guide passage is larger toward the low-pressure side than on the high-pressure side, and the tapered portion and the spiral groove are provided such that a starting point of the tapered portion is located within the region of the spiral groove in the entire range between the starting point and the ending point of the stroke of the valve element.
    Type: Application
    Filed: December 21, 2015
    Publication date: October 5, 2017
    Inventors: Masahiro HAYAMA, Hideki HIGASHIDOZONO, Masayuki FUTAKUCHI, Kohei FUKUDOME
  • Patent number: 9132714
    Abstract: A capacity control valve for increasing the ability to drain liquid refrigerant from a control chamber during startup of a variable-capacity compressor without changing the control valve characteristics has a spring acting in the direction of valve opening provided between an adapter and a free end of a pressure-sensitive body in the extension and contraction direction thereof and having an annular seat surface, and a third valve part having an annular engaging surface for opening and closing a suction-side passage by engaging and disengaging with the seat surface of the adapter.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: September 15, 2015
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventors: Masayuki Futakuchi, Kohei Fukudome, Kenji Moriwaki, Masahiro Hayama, Toshinori Kanzaki, Ryosuke Cho
  • Publication number: 20130291963
    Abstract: A capacity control valve for increasing the ability to drain liquid refrigerant from a control chamber during startup of a variable-capacity compressor without changing the control valve characteristics has a spring acting in the direction of valve opening provided between an adapter and a free end of a pressure-sensitive body in the extension and contraction direction thereof and having an annular seat surface, and a third valve part having an annular engaging surface for opening and closing a suction-side passage by engaging and disengaging with the seat surface of the adapter.
    Type: Application
    Filed: November 4, 2011
    Publication date: November 7, 2013
    Applicant: EAGLE INDUSTRY CO., LTD.
    Inventors: Masayuki Futakuchi, Kohei Fukudome, Kenji Moriwaki, Masahiro Hayama, Toshinori Kanzaki, Ryosuke Cho
  • Patent number: 6883060
    Abstract: The present invention provides a microcomputer provided with a flash memory and a method of storing a program into a flash memory by which a write failure which arises from an interruption of rewriting processing of the flash memory can be detected rapidly and with certainty. The microcomputer provided with a flash memory comprises a rewrite-program area for storing a program for a rewriting processing procedure for the flash memory, and a controller for forming a plurality of flag areas locally in the flash memory when the rewriting program stored in external storage means or the rewrite program area is written into the flash memory, performing determination of completion of a plurality of stages of rewriting processing or determination of whether the plurality of stages are good or bad and recording results of the determination into the respective flag areas.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: April 19, 2005
    Assignee: NEC Electronics Corporation
    Inventor: Masahiro Hayama
  • Patent number: 5508765
    Abstract: A matrix-addressed type display device has display material sandwiched between two substrates facing each other, and a transparent pixel electrode disposed in matrix arrangement. The display device display characters by the application of a voltage selectively to the transparent pixel electrode by the use of a thin-film transistor. To improve display characteristics, an electric charge capacitor is provided in each pixel. This electric charge capacitor is connected to an adjacent gate electrode path and includes a transparent inner bottom electrode sandwiched between a dielectric substrate and a transparent pixel electrode. A transparent dielectric film is Interposed between the transparent pixel electrode and the transparent inner bottom electrode.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: April 16, 1996
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Naoki Nakagawa, Satoru Kawamoto, Hirokazu Sakamoto, Masahiro Hayama
  • Patent number: 5414278
    Abstract: A pixel electrode and a line for a storage capacitor are sandwiched by first and second protecting films so as to position them in a different plane from a gate electrode and source/drain lines. An insulating film for a storage capacitor and the second protecting film remain at a crossing of the source line and a gate line, but part of them on a TFT is removed, when a pattern of the removal is at least partially deviated from a pattern of a contact hole in the first protecting film directly covering a polycrystalline Si film over the TFT, so that a short-circuit between lines and a breaking of the lines because of a level difference of film layers. Thus, an occurance of failure because of the short-circuit between lines is inhibited, and failure in the lines is reduced by reducing the breaking of the source line and/or the drain line.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: May 9, 1995
    Assignee: Mitsushibi Denki Kabushiki Kaisha
    Inventors: Kazuhiro Kobayashi, Hiroyuki Murai, Masahiro Hayama
  • Patent number: 5286983
    Abstract: A TFT array for a display device includes a plurality of spaced apart gate conductors and a plurality of spaced apart source conductors crossing over the gate conductors. TFT's are arranged in rows and columns. The gates of TFT's in each row are connected to a gate conductor for that row, and the sources of TFT's in each column are connected to a source conductor for that column. The drains of the TFT's are connected to respective pixel electrodes arranged in rows and columns. Each of a plurality of display sections has a storage capacitance connected at one end to an associated pixel electrode. Storage capacitance conductors are arranged parallel to respective gate conductors. Storage capacitors associated with the display sections in each row are connected to a storage capacitance conductor that is connected to the gate conductor of the next adjacent row.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: February 15, 1994
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takao Sakamoto, Kazuhiro Kobayashi, Masahiro Hayama, Naoki Nakagawa
  • Patent number: 5270845
    Abstract: An improved method for manufacturing a liquid crystal display unit substantially free from gate electrode breakage but with no increase in the number of manufacturing steps over the conventional method. The liquid crystal display unit includes a TFT array substrate including a plurality of gate electrode lines juxtaposed on a transparent insulating substrate, a plurality of source electrode lines arranged across the gate electrode lines, nonlinear active elements disposed at the intersections of the electrode lines, a confronting electrode substrate having a transparent conductive film on the surface thereof confronting the TFT array substrate, and a liquid crystal display material being held between the confronting electrode substrate and the TFT array substrate. Each of the gate electrode lines is constructed in the form of two layers. One of the two layers is made of display electrode material simultaneously with the formation of the display electrode.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: December 14, 1993
    Assignee: Mitsubishi Denki K.K.
    Inventors: Hirokazu Sakamoto, Masayuki Yokomizo, Masahiro Hayama, Takao Matsumoto, Naoki Nakagawa, Makoto Ohtani
  • Patent number: 5242543
    Abstract: A wet etching method for forming a metal film pattern having tapered edges includes preparing a metal film deposited on a substrate, performing a treatment for making the surface of the metal film hydrophilic, forming a photoresist layer pattern with phenol novolac resin as a main component on the surface of the metal film, post-baking the photoresist layer pattern at a predetermined temperature for a predetermined time and etching the metal film with etchant including nitric acid, thereby obtaining a metal film pattern having edges with a uniform taper angle desirably controlled with precision.
    Type: Grant
    Filed: February 4, 1992
    Date of Patent: September 7, 1993
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Taro Maejima, Masahiro Hayama
  • Patent number: 5151806
    Abstract: An active matrix-type liquid crystal display apparatus, in which a pixel electrode and a common electrode line are not overlapped but coupled capacitively by a floating electrode, so that the pixel electrode and common electrode do not short-circuit, and a storage capacitance is formed by the series connection of a plurality of capacitors. An active matrix-type liquid crystal display apparatus, in which a pixel electrode and a gate electrode line at the succeeding or preceeding row are not overlapped but coupled capacitively by a floating electrode, so that the pixel electrode and gate electrode do not short-circuit, and a storage capacitance is formed by the series connection of a plurality of capacitors.
    Type: Grant
    Filed: March 6, 1991
    Date of Patent: September 29, 1992
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Satoru Kawamoto, Noaki Nakagawa, Masahiro Hayama
  • Patent number: 5066106
    Abstract: A liquid crystal display device includes a transparent conductive film display electrode on a transparent insulating substrate, a plurality of lower layer source conductors disposed simultaneously with a plurality of gate electrode conductors on the substrate, the source conductors intersecting the gate electrode conductors, a gate insulation film on the gate electrode conductors, the lower layer source conductors, and the display electrode, a semiconductor film disposed on the gate insulation film at a position overlying the gate electrode conductors, a drain electrode connected to the display electrode and disposed on the semiconductor film and the gate insulation film, and an upper layer source electrode conductor connected to the lower layer source conductors, the upper layer source electrode conductor disposed on the gate insulation film and the semiconductor film and forming a double-layer structure with the lower layer source conductors.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: November 19, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hirokazu Sakamoto, Makoto Ohtani, Naoki Nakagawa, Taro Maejima, Masahiro Hayama
  • Patent number: 5010842
    Abstract: Apparatus for forming a thin film on a substrate surface by a CVD (Chemical Vapor Deposition) method which includes diffusing pipes for diffusing and supplying a first reactive gas, and uniformizing plates for supplying uniformly an active species formed through excitation of a second reactive gas. The first reactive gas and the active species are mixed uniformly with each other, and the resultant uniform mixture is supplied uniformly to the substrate surface, whereby a uniform film deposition rate is obtained in a reaction zone in which the thin film is formed, and a uniform thin film is formed over the entire substrate surface even when the area of the substrate surface is large.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: April 30, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masao Oda, Yoshimi Kinoshita, Masahiro Hayama
  • Patent number: 4889983
    Abstract: An image sensor includes an amorphous silicon photodiode on an insulating substrate, an amorphous silicon thin film transistor disposed on the same substrate for reading out charges stored by said photodiode, and a wiring film as a source/drain electrode of said transistor and as a first electrode of the photodiode free of steps. The image sensor may include a matrix wiring section for taking out signals, a silicon film including a channel protection film for the transistor, an insulating film for the matrix wiring, and a second conductor of the matrix wiring connected with the source/drain electrode of the transistor and arranged in a direction generally normal to the source/drain electrode and disposed on the wiring film.
    Type: Grant
    Filed: November 22, 1988
    Date of Patent: December 26, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshinori Numano, Masahiro Hayama
  • Patent number: 4754152
    Abstract: An optical reading device with the least cross-talk and good reading resolution, which is constructed with a plurality of metal electrodes disposed on an insulating base plate in a spaced apart relationship for each bit, a photoconductive film provided on the plurality of metal electrodes, and a transparent electrically conductive film disposed in confrontation to the plurality of metal electrodes, wherein the photoconductive film possesses high resistance value at least at the side thereof facing the metal electrode, the transparent electrically conductive film and the photoconductive film are cut out at their portions corresponding to a positional space between adjacent metal electrodes, and the photoconductive film does not substantially protrude from the transparent electrically conductive film at a portion where the transparent electrically conductive film confronts to each of the metal electrodes.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: June 28, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masahiro Hayama, Hidejiro Miki