Patents by Inventor Masao Yamamoto

Masao Yamamoto 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: 7234872
    Abstract: A rolling bearing includes a plurality of rolling elements movably retained at almost the same interval between an inner ring and an outer ring with a cage made of synthetic resin provided interposed therebetween. The rolling bearing further includes, an oil film made of a lubricant, and a grease containing a synthetic oil as a base oil enclosed therein. The lubricant contains at least one additive selected from the group consisting of organic aliphatic acid, organic aliphatic acid derivative and organic phosphorus compound incorporated in a synthetic oil in a proportion of from 0.5 to 10% by weight formed on the surface of the raceways of the inner and outer rings and the surface of the rolling elements, and a grease containing a synthetic oil as a base oil enclosed therein.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: June 26, 2007
    Assignee: NSK, Ltd.
    Inventors: Yasunobu Fujita, Masao Yamamoto, Kouichi Hachiya, Atsushi Yokouchi, Toshikazu Yabe, Emiko Shiraishi, Michiharu Naka
  • Patent number: 7230765
    Abstract: To provide an image display device of the type that presents images in a certain part of the field of vision in which the image display device can be used for prolonged periods of time. An image display device 1 includes a main body 10 having a shape of a glasses frame, a right-eye display device 20R and a left-eye display device 20L. Each of the right-eye display device 20R and the left-eye display device 20L is for displaying a predetermined image and is provided in such a manner that it is not very clearly visible for a user when the user wearing the main body 10 on his or her head looks straight ahead and that it becomes clearly visible for the user only when the user moves his or her forward-looking eyes away. The user can get a forward field of vision and can see the images displayed on the right-eye display device 20R and the left-eye display device 20L when he or she looks at 45 degrees down.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: June 12, 2007
    Assignee: Scalar Corporation
    Inventor: Masao Yamamoto
  • Patent number: 7201993
    Abstract: The present invention provides a polymer electrolyte fuel cell having an increased reaction area by forming a gas channel, a proton channel and an electron channel very close to each other inside a catalyst layer. This polymer electrolyte fuel cell includes a hydrogen ion conductive polymer electrolyte membrane; and a pair of electrodes having catalyst layers sandwiching the hydrogen ion conductive polymer electrolyte membrane between them and gas diffusion layers in contact with the catalyst layers, in which the catalyst layer of at least one of the electrodes comprises carbon particles supporting a noble metal catalyst, and the carbon particles include at least two kinds of carbon particles adsorbing a hydrogen ion conductive polymer electrolyte in mutually different dispersed states.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: April 10, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Makoto Uchida, Yasushi Sugawara, Eiichi Yasumoto, Akihiko Yoshida, Junji Morita, Masao Yamamoto, Shinya Kosako, Osamu Sakai, Yoshihiro Hori
  • Publication number: 20060257141
    Abstract: To provide a camera that is able to capture images of moving subjects as video images, that has a large depth of field and is thus able to capture images of thick objects, and that is able to capture images of living cells and tissues as well as tissues in water. An camera includes an image pickup element 134 and an objective lens 133 disposed between the image pickup element 134 and a subject. A photosensitive surface 134A of the image pickup element 134 has elements sensitive to the lights in the red, green, and blue spectral regions, respectively.
    Type: Application
    Filed: August 13, 2004
    Publication date: November 16, 2006
    Inventor: Masao Yamamoto
  • Publication number: 20060229194
    Abstract: The present invention provides a polymer electrolyte fuel cell having an increased reaction area by forming a gas channel, a proton channel and an electron channel very close to each other inside a catalyst layer. This polymer electrolyte fuel cell includes a hydrogen ion conductive polymer electrolyte membrane; and a pair of electrodes having catalyst layers sandwiching the hydrogen ion conductive polymer electrolyte membrane between them and gas diffusion layers in contact with the catalyst layers, in which the catalyst layer of at least one of the electrodes comprises carbon particles supporting a noble metal catalyst, and the carbon particles include at least two kinds of carbon particles adsorbing a hydrogen ion conductive polymer electrolyte in mutually different dispersed states.
    Type: Application
    Filed: June 20, 2006
    Publication date: October 12, 2006
    Inventors: Makoto Uchida, Yasushi Sugawara, Eiichi Yasumoto, Akihiko Yoshida, Junji Morita, Masao Yamamoto, Shinya Kosako, Osamu Sakai, Yoshihiro Hori
  • Patent number: 7118212
    Abstract: To provide an image display device of the type use while worn on the head without giving a strange impression when used in everyday life. An image display device 1 includes a main body 10 that can be worn on the head of a user, ad a display unit 20 for displaying a predetermined image in such a manner that the image is blurred or beyond the vision of the user when the user wearing the main body 10 on his or her head looks straight ahead, and that the user gets a clear vision of the image when the user moves his or her eyes away. The display unit 20 includes a pair of display units for the right and left eyes which are provided on or in the main body 10 at a position that cannot be seen from anyone other than the user.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: October 10, 2006
    Assignee: Scalar Corporation
    Inventor: Masao Yamamoto
  • Patent number: 7065715
    Abstract: An image information processing system that displays first and second information about image information stored in the system and interlinks the first and second information, such that when the order of the first information is changed, the order of the second information is also changed, thereby simplifying various operations for the user.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: June 20, 2006
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroki Sugiyama, Masao Yamamoto
  • Patent number: 7060384
    Abstract: A porous supporting carbon body of a gas diffusion layer is provided with a larger number of smaller pores at its catalyst layer side and a smaller number of larger pores at the other side, particularly with an appropriate distribution of finer mesh at its catalyst layer side and coarser mesh at the other side. As a result, a high performance polymer electrolyte fuel cell is obtained in which water generated at the catalyst layer is quickly sucked out to the gas diffusion layer, and is evaporated at the gas diffusion layer to be effectively exhausted to outside the fuel cell, so that excessive water can be prevented from retaining in the gas diffusion electrode, with the polymer electrolyte membrane being maintained at an appropriately wet condition.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: June 13, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akihiko Yoshida, Masao Yamamoto, Junji Niikura, Yasuo Takebe, Osamu Sakai, Makoto Uchida
  • Patent number: 6991870
    Abstract: It has been difficult to keep the voltage of a polymer electrolyte fuel cell stable for a long period of time because uniform water content control over the plane of the membrane-electrode assembly is impossible. A gas diffusion electrode is produced by forming a conductive polymer layer composed of conductive particles and a polymer material on a porous material composed of carbon fiber, and forming a catalyst layer composed of platinum-carried carbon particles on the plane of the conductive polymer layer. The conductive polymer layer is composed of conductive particles different in particle size, and the content of the conductive particles having the smaller particle size is decreased from one end towards the other end of the gas diffusion electrode.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: January 31, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Eiichi Yasumoto, Akihiko Yoshida, Makoto Uchida, Junji Morita, Yasushi Sugawara, Hisaaki Gyoten, Masao Yamamoto, Osamu Sakai, Junji Niikura
  • Publication number: 20050282730
    Abstract: A preventive, therapeutic or improving agent for diseases against which activation of the thrombopoietin receptor is effective or a platelet increasing agent, which contains a thrombopoietin receptor activator represented by the formula (1): [wherein each of R1 and R3 is independently a hydrogen atom, SO3H, a C1-6 alkyl group, a C1-6 alkylcarbonyl group or a C6-18 arylcarbonyl group (the C1-6 alkyl group, the C1-6 alkylcarbonyl group and the C6-18 arylcarbonyl group may be optionally substituted with a halogen atom, a hydroxyl group, a C2-6 alkenyl group, a C1-6 alkoxy group, a C1-6 alkoxycarbonyl group, a C6-18 aryl group, a 2-pyridyl group, a 3-pyridyl group, a 4-pyridyl group, a 2-furanyl group, a 3-furanyl group, a 2-thienyl group, a 3-thienyl group or NR9R10) , and each of R2, R4 and Ra is independently a hydrogen atom, a hydroxyl group or a C1-6 alkoxy group].
    Type: Application
    Filed: August 14, 2003
    Publication date: December 22, 2005
    Applicant: Nissan Chemical Industries, Ltd.
    Inventors: Katsuaki Miyaji, Norihisa Ishiwata, Takanori Nakamura, Taito Nishino, Hisao Kamiya, Masao Yamamoto
  • Publication number: 20050254134
    Abstract: To provide an image display device of the type used while worn on the head without giving a strange impression when used in everyday life. An image display device 1 includes a main body 10 that can be worn on the head of a user, and a display unit 20 for displaying a predetermined image in such a manner that the image is blurred or beyond the vision of the user when the user wearing the main body 10 on his or her head looks straight ahead, and that the user gets a clear vision of the image when the user moves his or her eyes away. The display unit 20 are a pair of display units for the right and left eyes which are provided on or in the main body 10 at a position that cannot be seen from anyone other than the user.
    Type: Application
    Filed: August 12, 2003
    Publication date: November 17, 2005
    Inventor: Masao Yamamoto
  • Publication number: 20050243431
    Abstract: To provide an image display device of the type that presents images in a certain part of the field of vision in which the image display device can be used for prolonged periods of time. An image display device 1 includes a main body 10 having a shape of a glasses frame, a right-eye display device 20R and a left-eye display device 20L. Each of the right-eye display device 20R and the left-eye display device 20L is for displaying a predetermined image and is provided in such a manner that it is not very clearly visible for a user when the user wearing the main body 10 on his or her head looks straight ahead and that it becomes clearly visible for the user only when the user moves his or her forward-looking eyes away. The user can get a forward field of vision and can see the images displayed on the right-eye display device 20R and the left-eye display device 20L when he or she looks at 45 degrees down.
    Type: Application
    Filed: August 12, 2003
    Publication date: November 3, 2005
    Inventor: Masao Yamamoto
  • Publication number: 20050237271
    Abstract: To provide an image display device of the type that presents images in a certain part of the field of vision in which the image display device can be used for prolonged periods of time. An image display device 1 includes a main body 10 having a shape of a glasses frame, a right-eye display device 20R and a left-eye display device 20L. Each of the right-eye display device 20R and the left-eye display device 20L is for displaying a predetermined image and is provided in such a manner that it is not very clearly visible for a user when the user wearing the main body 10 on his or her head looks straight ahead and that it becomes clearly visible for the user only when the user moves his or her forward-looking eyes away. The user can get a forward field of vision and can see the images displayed on the right-eye display device 20R and the left-eye display device 20L when he or she looks at 45 degrees down.
    Type: Application
    Filed: August 12, 2003
    Publication date: October 27, 2005
    Applicant: SCALAR CORPORATION
    Inventor: Masao Yamamoto
  • Publication number: 20050164784
    Abstract: A game apparatus includes two LCDs, and a touch panel is provided in relation to the one LCD. When an action game is started, a game screen is displayed on the other LCD, and a still image (capture screen) obtained by copying the game screen according to a capture operation by a player is displayed on the one LCD. When an enemy object on the capture screen is directed, stroked, and so forth by use of the touch panel, the enemy object on the game screen is frozen or erased.
    Type: Application
    Filed: January 25, 2005
    Publication date: July 28, 2005
    Applicant: Nintendo Co., Ltd.
    Inventors: Masao Yamamoto, Naoya Kawanobe
  • Patent number: 6921598
    Abstract: The present invention relates to a polymer electrolyte fuel cell comprising: an electrolyte membrane-electrode assembly including an anode, a cathode and a polymer electrolyte membrane interposed therebetween; an anode-side conductive separator plate having a gas flow channel for supplying a fuel gas to the anode; and a cathode-side conductive separator plate having a gas flow channel for supplying an oxidant gas to the cathode. A conductive separator plate made of carbon has poor wettability with water. This has posed the disadvantage that variations in performance are induced by nonuniform gas distribution among cells due to the accumulation of product water or humidifying water in the gas flow channel on the surface of the separator plate. The present invention employs a conductive separator plate comprising a conductive carbon having a hydrophilic functional group, at least in a portion of the gas flow channels, thereby preventing water from accumulating in the gas flow channels.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: July 26, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masao Yamamoto, Junji Niikura, Nobuhiro Hase, Kazuhito Hatoh, Hisaaki Gyoten, Hideo Ohara, Teruhisa Kanbara, Masayo Sugou, Tatsuo Yamazaki
  • Patent number: 6892827
    Abstract: A vibrating drill/driver includes a motor for driving a spindle about the longitudinal axis thereof, a switching handle supported for rotation about a longitudinal axis thereof, a clutch mechanism for varying a working torque in dependence on rotation of the switching handle, a switching ring having a recess and capable of rotating together with the switching handle, and a switching plate having a tip for engagement in the recess. A vibrating cam mechanism is provided to be operable to undergo a slidable engagement to provide a vibration for the spindle in an axial direction thereof when the tip of the switching plate is engaged in the recess of the switching ring. With the above-described construction, the rotation of the switching handle in one direction causes the vibrating drill/driver to be set in one of a clutch mode, a vibrating mode, and a drilling mode in this order.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: May 17, 2005
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Kazuto Toyama, Masao Yamamoto
  • Patent number: 6880978
    Abstract: A rolling bearing for an HDD being excellent in the resistance to fretting wear, capable of lowering the torque and relieving the torque change and having a long life while exerting no undesirable effect on various bearing properties. A rolling bearing for hard disk drives wherein a cage 7 supports a plural number of rolling elements 5 located between an inner ring 2 and an outer ring 4 and sealing members 6,6 fixed to the both ends in the axial direction of one of said inner ring 2 and said outer ring 4 are opposite to each other, wherein a lubricating oil has been injected into the bearing space formed between said sealing members 6,6 at the both ends in the axial direction so as to amount to 1 to 50% by volume of the bearing space.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: April 19, 2005
    Assignee: NSK Ltd.
    Inventors: Yasunobu Fujita, Masao Yamamoto, Kouichi Hachiya, Atsushi Yokouchi, Toshikazu Yabe, Emiko Shiraishi, Michiharu Naka
  • Patent number: 6833952
    Abstract: A stereoscopic display apparatus 20 is employed in combination with an image transmission section 10. A case 1 includes a half-mirror 3, a visual field lens 4 and polarizers 22L, 22R therein, and an observation port 23 with a hood is defined in the case 1. A band 25 to be worn on a viewer's head is disposed in the exterior of the case 1. Both of the polarizers 22L and 22R are so designed as to display the stereoscopic images for the right and left eyes on the basis of data transmitted from the image transmission section 10, respectively, and the image lights are guided to the viewer's eyes through the half-mirror 3 and the visual field lens 4. The stereoscopic display apparatus 20 is of the head mount type that guides the images for the right and left eyes projected onto one display screen which is formed of the half-mirror 3 to the right and left eyes.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: December 21, 2004
    Assignee: Scalar Corporation
    Inventor: Masao Yamamoto
  • Publication number: 20040245005
    Abstract: A vibrating drill/driver includes a motor for driving a spindle about the longitudinal axis thereof, a switching handle supported for rotation about a longitudinal axis thereof, a clutch mechanism for varying a working torque in dependence on rotation of the switching handle, a switching ring having a recess and capable of rotating together with the switching handle, and a switching plate having a tip for engagement in the recess. A vibrating cam mechanism is provided to be operable to undergo a slidable engagement to provide a vibration for the spindle in an axial direction thereof when the tip of the switching plate is engaged in the recess of the switching ring. With the above-described construction, the rotation of the switching handle in one direction causes the vibrating drill/driver to be set in one of a clutch mode, a vibrating mode, and a drilling mode in this order.
    Type: Application
    Filed: May 3, 2004
    Publication date: December 9, 2004
    Inventors: Kazuto Toyama, Masao Yamamoto
  • Publication number: 20040241510
    Abstract: There are provided a fuel cell, a fuel gas supplying unit, an oxidizer gas supplying unit, a state detecting unit of detecting the temperature of the fuel gas supplying unit, an operation controlling unit of detecting abnormalities of predetermined functions performed by the fuel gas supplying unit utilizing the results detected by the state detecting unit and performing operation control in an operation mode corresponding to the contents of abnormalities, and an operation mode switching unit of switching to an operation mode corresponding to the contents of abnormalities.
    Type: Application
    Filed: July 21, 2004
    Publication date: December 2, 2004
    Inventors: Shinji Miyauchi, Tetsuya Ueda, Terumaru Harada, Masataka Ozeki, Masao Yamamoto, Akinari Nakamura, Yoshikazu Tanaka