Patents by Inventor Masataka Yamashita
Masataka Yamashita 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: 20110224069Abstract: There is provided a honeycomb catalyst body comprising a honeycomb base body having porous partition walls forming a plurality of divided cells which extend from one end face of honeycomb base body to its other end face and which function as a fluid passage, and an outer wall present at the outermost peripheral portion of honeycomb base body, plugged portions provided so as to plug part of the plurality of divided cells, and a catalyst loaded on the partition walls of honeycomb base body. The plurality of divided cells include outermost peripheral cells formed by the partition walls and the outer wall, and of the outermost peripheral cells, those cells whose hydraulic diameter ratio to the hydraulic diameters of the cells other than the outermost peripheral cells is 5 to 75%, are through-cells having no plugged portion.Type: ApplicationFiled: February 18, 2011Publication date: September 15, 2011Applicant: NGK Insulators, Ltd.Inventors: Chika GOTO, Masataka Yamashita, Toshio Yamada, Yukio Miyairi
-
Publication number: 20110212831Abstract: A substrate with a surface-collection-layer comprising a honeycomb substrate having a porous partition wall that defines and forms cells, and a plurality of plugging portions, a surface-collection-layer being formed on a surface of the partition wall that forms the remaining cells, the thickness of the surface-collection-layer on the outlet-side open end being larger than the thickness of the surface-collection-layer in a center area of the substrate, the partition wall having predetermined thickness, porosity and pore size, the surface-collection-layer having predetermined thickness, porosity, and average pore size, and the substrate having predetermined cell density.Type: ApplicationFiled: December 21, 2010Publication date: September 1, 2011Applicant: NGK Insulators, Ltd.Inventors: Chika Goto, Masataka Yamashita, Yukio Miyairi
-
Publication number: 20110203242Abstract: A honeycomb structure wherein the thickness of each partition wall is 50.8 ?m inclusive to 161.5 ?m exclusive, the cell density is 15.5 to 62.0 cells/cm2, the cell opening ratio of the honeycomb structure body is 76 to 91%, the porosity of the partition walls is 35 to 45%, the average pore diameter of the partition walls is 2 ?m inclusive to 10 ?m exclusive, the material for the partition walls includes at least one member selected from the group consisting of cordierite, aluminum titanate, silicon carbide, alumina and mullite, and the value obtained by dividing the average pore diameter of the partition walls by the thickness of the partition walls is larger than 0.04 but smaller than 0.065.Type: ApplicationFiled: December 15, 2010Publication date: August 25, 2011Applicant: NGK Insulators, Ltd.Inventors: Chika GOTO, Masataka YAMASHITA, Yukio MIYAIRI
-
Publication number: 20110201493Abstract: There is provided a honeycomb catalyst body including, a honeycomb substrate, plugging portions, and a three way catalyst. All the cells are open in the inflow side end face, the honeycomb substrate has two regions of an inflow side region and an outflow side region, the inflow side region of the honeycomb substrate is a region from the inflow side end face to a position of 10 to 90% of a length in an central axial direction of the honeycomb substrate from the inflow side end face, and 100 to 400 g/L of the three way catalyst is loaded on the partition walls in the inflow side region, no catalyst is loaded on the partition walls in the outflow side region, and a ratio of the length to a diameter of the inflow side end face of the honeycomb substrate is 1.1 to 2.0.Type: ApplicationFiled: February 10, 2011Publication date: August 18, 2011Applicant: NGK Insulators, Ltd.Inventors: Chika GOTO, Masataka Yamashita, Yukio Miyairi
-
Patent number: 7858169Abstract: A honeycomb segment containing outer walls and porous partition walls disposed inside the outer walls has a structure where first cells each open in one end portion on one side and plugged in the other end portion on the other side and second cells each plugged in one end portion on one side and open in the other end portion on the other side are alternately disposed, a cross-sectional area of the first cells in a cross section cut along a plane perpendicular to a longitudinal direction of the cells is larger than that of the second cells, and the first cells and the second cells are alternately disposed in a first direction and in a second direction perpendicular to the first direction in the cross section, and the outer walls are linearly formed so as to have a uniform thickness except for corner portions.Type: GrantFiled: July 24, 2009Date of Patent: December 28, 2010Assignee: NGK Insulators, Ltd.Inventor: Masataka Yamashita
-
Publication number: 20090286042Abstract: A honeycomb segment containing outer walls and porous partition walls disposed inside the outer walls has a structure where first cells each open in one end portion on one side and plugged in the other end portion on the other side and second cells each plugged in one end portion on one side and open in the other end portion on the other side are alternately disposed, a cross-sectional area of the first cells in a cross section cut along a plane perpendicular to a longitudinal direction of the cells is larger than that of the second cells, and the first cells and the second cells are alternately disposed in a first direction and in a second direction perpendicular to the first direction in the cross section, and the outer walls are linearly formed so as to have a uniform thickness except for corner portions.Type: ApplicationFiled: July 24, 2009Publication date: November 19, 2009Applicant: NGK INSULATORS, LTD.Inventor: Masataka YAMASHITA
-
Patent number: 7403776Abstract: When electronic mail transmitting operation is performed, it is checked whether the standby mode is the digital mode. If the standby mode is not the digital mode, processing for changing the standby mode from the analog mode to the digital mode is executed. When the standby mode is changed to the digital mode, the electronic mail is transmitted through a digital channel. If the standby mode cannot be changed to the digital mode, the transmission electronic mail is stored in a memory, and message hold transmission control is executed afterward.Type: GrantFiled: March 26, 2002Date of Patent: July 22, 2008Assignee: Kabushiki Kaisha ToshibaInventors: Tatsuya Suetaka, Yoichi Nagashima, Masataka Yamashita
-
Patent number: 7388574Abstract: A pointing device is provided which facilitates the assembly, achieves downsizing and has a long life. Magnetic sensors 21 are placed symmetrically two by two along an X axis and Y axis on a printed circuit board 24. A switch 28 is placed on a silicone resin 23 side surface of the printed circuit board 24 to provide a switch function achieved by depressing a magnet cover 25 toward the magnet 22. The pointing device, a device for outputting coordinate values of an input point, can not only output the coordinate values, but also make a decision by the switch function. A silicone resin 23 is easy to deform caused by an external force, and returns its initial state without the applied external force as soon as the external force is removed.Type: GrantFiled: October 17, 2003Date of Patent: June 17, 2008Assignee: Asahi Kasei EMD CorporationInventors: Toshinori Takatsuka, Kazutoshi Ishibashi, Masataka Yamashita
-
Patent number: 7304640Abstract: A method of measuring luminance of an image display apparatus, a method of manufacturing the same, and a method and an apparatus for adjusting characteristics of the same, in which accuracy of measurement is improved while reducing time for measuring luminance of a pixel are provided. A plurality of devices that are not adjacent to each other (for example the devices of the same color out of R, G, and B) are selected and illuminated simultaneously, and luminance is measured for each of them. Based on measured luminance, the electron-emitting characteristics of the respective electron-emitting device as are adjusted based on measured luminance.Type: GrantFiled: July 25, 2003Date of Patent: December 4, 2007Assignee: Canon Kabushiki KaishaInventors: Masataka Yamashita, Eiji Yamaguchi, Akihiko Yamano
-
Patent number: 7189427Abstract: This invention provides an electron source manufacturing apparatus which can be easily downsized and operated. The electron source manufacturing apparatus includes a support member for supporting a substrate (10) having a conductor (11), a vessel (12) which has a gas inlet port (15) and a gas exhaust port (16) and covers a partial region of the surface of the substrate (10); a gas inlet unit (24) connected to the gas inlet port (15) to introduce gas into the vessel, an exhaust unit (26) connected to the gas exhaust port to evacuate the interior of the vessel, and a voltage application unit (32) for applying a voltage to the conductor.Type: GrantFiled: February 10, 2004Date of Patent: March 13, 2007Assignee: Canon Kabushiki KaishaInventors: Toshihiko Takeda, Masaru Kamio, Masataka Yamashita, Yasue Sato, Hitoshi Oda, Keisuke Yamamoto, Miki Tamura, Hideshi Kawasaki, Kazuhiro Jindai
-
Patent number: 7184631Abstract: An optical device includes an optical input waveguide, a branch/cross waveguide, an optical output waveguide and connection waveguides that connect the optical input and optical output waveguides to the cross/branch waveguide. The spot size of light propagating through the cross/branch waveguide is larger than the spot size of light propagating through optical input waveguides, the optical output waveguides, or the connection waveguides.Type: GrantFiled: September 6, 2001Date of Patent: February 27, 2007Assignee: NGK Insulators, Ltd.Inventors: Osamu Mitomi, Takenori Ichigi, Masatsugu Oshima, Jun Okumura, Masataka Yamashita
-
Patent number: 6961493Abstract: An optical device consisting of a core layer, a first clad layer in contact with the core layer, a second clad layer, third clad layer and at least one electrode for applying a certain voltage or supplying a certain current. The second clad layer is deposited on the third clad layer and the core layer is provided between the first clad layer and the second clad layer. The core layer, first clad layer, second clad layer and third clad layer consist of a material with a negative refractive index variation coefficient, and the third clad layer has a refractive index smaller than that of the second clad layer.Type: GrantFiled: April 16, 2002Date of Patent: November 1, 2005Assignee: NGK Insulators, Ltd.Inventors: Osamu Mitomi, Takenori Ichigi, Masatsugu Oshima, Jun Okumura, Kenji Aoki, Masataka Yamashita
-
Publication number: 20040174323Abstract: A method of measuring luminance of an image display apparatus, a method of manufacturing the same, and a method and an apparatus for adjusting characteristics of the same, in which accuracy of measurement is improved while reducing time for measuring luminance of a pixel are provided. A plurality of devices that are not adjacent to each other (for example the devices of the same color out of R, G, and B) are selected and illuminated simultaneously, and luminance is measured for each of them. Based on measured luminance, the electron-emitting characteristics of the respective electron-emitting device as are adjusted based on measured luminance.Type: ApplicationFiled: July 25, 2003Publication date: September 9, 2004Applicant: CANON KABUSHIKI KAISHAInventors: Masataka Yamashita, Eiji Yamaguchi, Akihiko Yamano
-
Patent number: 6784608Abstract: A light-absorptive antireflection film comprising a light-absorptive film formed on a glass substrate containing pigment microparticles and having a physical thickness of not less than 10 nm and an antireflection multilayer film attenuating reflected light of incident light by interference of light, wherein at least one layer of the antireflection multilayer film is an electroconductive thin film having a surface resistance of not more than 1000 &OHgr;/□, and a display device including the same and methods of producing them.Type: GrantFiled: December 22, 2000Date of Patent: August 31, 2004Assignee: Sony CorporationInventors: Soya Araki, Takao Sumida, Masataka Yamashita, Hiroko Funahashi
-
Publication number: 20040154545Abstract: This invention provides an electron source manufacturing apparatus which can be easily downsized and operated. The electron source manufacturing apparatus includes a support member for supporting a substrate (10) having a conductor (11), a vessel (12) which has a gas inlet port (15) and a gas exhaust port (16) and covers a partial region of the surface of the substrate (10); a gas inlet unit (24) connected to the gas inlet port (15) to introduce gas into the vessel, an exhaust unit (26) connected to the gas exhaust port to evacuate the interior of the vessel, and a voltage application unit (32) for applying a voltage to the conductor.Type: ApplicationFiled: February 10, 2004Publication date: August 12, 2004Applicant: CANON KABUSHIKI KAISHAInventors: Toshihiko Takeda, Masaru Kamio, Masataka Yamashita, Yasue Sato, Hitoshi Oda, Keisuke Yamamoto, Miki Tamura, Hideshi Kawasaki, Kazuhiro Jindai
-
Patent number: 6752676Abstract: A method for producing an electron-emitting device having an electroconductive film with an electron-emitting region extending between plural electrodes, includes a step of forming the electron-emitting region in the electroconductive film, including a step of heating the electroconductive film, and a step of energizing the electroconductive film in an atmosphere in which a gas for promoting cohesion of the electroconductive film exists.Type: GrantFiled: February 16, 1999Date of Patent: June 22, 2004Assignee: Canon Kabushiki KaishaInventors: Masataka Yamashita, Hisaaki Kawade, Toshikazu Ohnishi, Tatsuya Iwasaki, Takeo Ono
-
Publication number: 20040080491Abstract: A pointing device is provided which facilitates the assembly, achieves downsizing and has a long life. Magnetic sensors 21 are placed symmetrically two by two along an X axis and Y axis on a printed circuit board 24. A switch 28 is placed on a silicone resin 23 side surface of the printed circuit board 24 to provide a switch function achieved by depressing a magnet cover 25 toward the magnet 22. The pointing device, a device for outputting coordinate values of an input point, can not only output the coordinate values, but also make a decision by the switch function. A silicone resin 23 is easy to deform caused by an external force, and returns its initial state without the applied external force as soon as the external force is removed.Type: ApplicationFiled: October 17, 2003Publication date: April 29, 2004Inventors: Toshinori Takatsuka, Kazutoshi Ishibashi, Masataka Yamashita
-
Patent number: 6726520Abstract: This invention provides an electron source manufacturing apparatus which can be easily downsized and operated. The electron source manufacturing apparatus includes a support member for supporting a substrate (10) having a conductor (11), a vessel (12) which has a gas inlet port (15) and a gas exhaust port (16) and covers a partial region of the surface of the substrate (10); a gas inlet unit (24) connected to the gas inlet port (15) to introduce gas into the vessel, an exhaust unit (26) connected to the gas exhaust port to evacuate the interior of the vessel, and a voltage application unit (32) for applying a voltage to the conductor.Type: GrantFiled: February 21, 2001Date of Patent: April 27, 2004Assignee: Canon Kabushiki KaishaInventors: Toshihiko Takeda, Masaru Kamio, Masataka Yamashita, Yasue Sato, Hitoshi Oda, Keisuke Yamamoto, Miki Tamura, Hideshi Kawasaki, Kazuhiro Jindai
-
Publication number: 20020176652Abstract: An optical device comprises a core layer; a first clad layer, with the core layer being deposited on a part of surface of the first clad layer; a second clad layer, with the core layer being provided between the first clad layer and the second clad layer; a third clad layer deposited on the second clad, an electrode for heating, and a substrate having a heat-sink function. At least one of the core layer and the clad layers comprises a material having a positive refractive index variation coefficient. The third clad layer has a refractive index smaller than that of the second clad layer.Type: ApplicationFiled: April 16, 2002Publication date: November 28, 2002Applicant: NGK Insulators, Ltd.Inventors: Osamu Mitomi, Takenori Ichigi, Masatsugu Oshima, Jun Okumura, Kenji Aoki, Masataka Yamashita
-
Publication number: 20020159706Abstract: The spot size of light propagating through a cross waveguide 22 is larger than the spot size of light propagating through optical input waveguides 21a and 21b, optical output waveguides 23a and 23b, or connection waveguides 24a, 24b, 25a and 25b.Type: ApplicationFiled: September 6, 2001Publication date: October 31, 2002Applicant: NGK Insulators, Ltd.Inventors: Osamu Mitomi, Takenori Ichigi, Masatsugu Oshima, Jun Okamura, Masataka Yamashita