Patents by Inventor Tohru Takahashi
Tohru Takahashi 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: 7148616Abstract: A curve formed by an inner surface of a face panel in a cross-section including a tube axis of a color picture tube is defined. The face panel includes at least one cross-section in which the curve has an inflection point between a center of the face panel and a circumferential edge of an effective display region. Assuming that a maximum value of an angle formed by a tangent of the curve and a plane orthogonal to the tube axis between the center of the face panel and the inflection point is ?A, and a minimum value of an angle formed by the tangent of the curve and the plane orthogonal to the tube axis between the inflection point and the circumferential edge of the effective display region is ?B, the curve having the inflection point satisfies 0.6??B/?A<1.0. Because of this, a color picture tube having satisfactory screen quality can be provided.Type: GrantFiled: March 29, 2005Date of Patent: December 12, 2006Assignee: Matsushita Toshiba Picture Display Co., Ltd.Inventors: Hiroyuki Oda, Tohru Takahashi
-
Patent number: 7135808Abstract: A lead portion 10 is made of a rod-like metal conductor and has a step portion 13 at its end portion. A first side plate 11 and a second side plate 12 are formed by using thinned portions of the end portion of the lead portion 10. The first and second side plates 11 and 12 face each other with a distance. One end of the first side plate 11 and one end of the second side plate 12 are continued to each other while the other end of the first side plate 11 and the other end of the second side plate 12 form open end edges 111 and 121 respectively.Type: GrantFiled: June 28, 2004Date of Patent: November 14, 2006Assignee: TDK CorporationInventors: Tohru Takahashi, Katsuyuki Takei
-
Patent number: 7045941Abstract: A shadow mask has a main mask and an auxiliary mask overlapped on the main mask. Electron beam passage apertures formed in the main mask and the auxiliary mask are arranged at given pitches in the direction of a major axis. Each electron beam passage aperture of the auxiliary mask is a communicating hole, which is formed of a smaller hole in that surface of the auxiliary mask which is in contact with the main mask and a larger hole opening in the opposite surface of the auxiliary mask. The smaller and larger holes of each electron beam passage aperture of the auxiliary mask have their respective central axes extending coaxially with each other and substantially at right angles to the surface of the auxiliary mask in the direction of the major axis.Type: GrantFiled: January 30, 2004Date of Patent: May 16, 2006Assignee: Kabushiki Kaisha ToshibaInventors: Takuya Mashimo, Tohru Takahashi, Hiroyuki Oda, Takeshi Nakayama
-
Patent number: 6979707Abstract: A high-permittivity rubber compound (MX) to be over 10, 15, or 20 in relative permittivity is produced by filling, to 100 weight parts of base material (M10), 300 or more, 400 or more, or 500 or more weight parts of barium titanate family material as powder (M11) over 2000 in relative permittivity at temperatures from room temperature to 90° C. A high-permittivity rubber compound (M30, M60) crosslinked by peroxide is heat-treated (S21, S31) to remove decomposition residue of the peroxide, and powder (BT4) of barium titanate family material of industrial grade is washed (S09) by de-ionized water (Mc) to remove ionic impurities, suppressing degradation of insulating characteristics.Type: GrantFiled: March 17, 2003Date of Patent: December 27, 2005Assignee: Fujikura Ltd.Inventors: Hiroshi Niinobe, Tohru Takahashi, Kazuo Watanabe, Shoutaroh Yoshida
-
Publication number: 20050273256Abstract: When the vehicle approaches an intersection, traffic signals located at the intersection are displayed on an intersection view, a traffic signal to be considered is displayed in a manner so as to be identifiable from the other traffic signals, arrows in the same directions as those of arrow signals for the traffic signal to be considered are displayed; and an arrow corresponding to an arrow signal permitting the vehicle to proceed in the direction of a guidance route is displayed in a manner so as to be identifiable from the other arrows.Type: ApplicationFiled: June 1, 2005Publication date: December 8, 2005Inventor: Tohru Takahashi
-
Patent number: 6972323Abstract: Anti-Fas antibodies which are cross-reactive with mouse and human Fas and are useful in the treatment of conditions attributable to abnormalities in the Fas/Fas ligand system.Type: GrantFiled: February 9, 2000Date of Patent: December 6, 2005Assignee: Sankyo Company, LimitedInventors: Nobufusa Serizawa, Kimihisa Ichikawa, Jun Ohsumi, Masahiko Ohtsuki, Hideyuki Haruyama, Tohru Takahashi, Hiroko Yoshida, Akio Shiraishi, Shin Yonehara
-
Publication number: 20050225226Abstract: A curve formed by an inner surface of a face panel in a cross-section including a tube axis of a color picture tube is defined. The face panel includes at least one cross-section in which the curve has an inflection point between a center of the face panel and a circumferential edge of an effective display region. Assuming that a maximum value of an angle formed by a tangent of the curve and a plane orthogonal to the tube axis between the center of the face panel and the inflection point is ?A, and a minimum value of an angle formed by the tangent of the curve and the plane orthogonal to the tube axis between the inflection point and the circumferential edge of the effective display region is ?B, the curve having the inflection point satisfies 0.6??B/?A<1.0. Because of this, a color picture tube having satisfactory screen quality can be provided.Type: ApplicationFiled: March 29, 2005Publication date: October 13, 2005Applicant: Matsushita Toshiba Picture Display Co., Ltd.Inventors: Hiroyuki Oda, Tohru Takahashi
-
Patent number: 6919673Abstract: A shadow mask is arranged to face a phosphor screen formed on an inner surface of a panel. A plurality of aperture columns are formed in parallel in the shadow mask. Each aperture column includes a plurality of apertures arranged in line at a predetermined interval. On both sides of each aperture column on the surface of the shadow mask facing the electron gun, stripe-shaped dielectric layers for acting on electron beams toward the apertures are formed respectively, and extend in substantial parallel with the aperture columns. The shadow mask is manufactured in such a manner that stripe-shaped insulating material layers are formed on the surface of a mask base material facing the electron gun, the mask base material is thereafter shaped into a predetermined shape, and the insulating material layers on the shaped mask are sintered.Type: GrantFiled: January 25, 2002Date of Patent: July 19, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Tohru Takahashi, Masatsugu Inoue, Kumio Fukuda, Masaru Nikaido, Hitoshi Shiozawa, Akiyoshi Nakamura, Satoshi Ishikawa
-
Publication number: 20050140250Abstract: A lead portion 10 is made of a rod-like metal conductor and has a step portion 13 at its end portion. A first side plate 11 and a second side plate 12 are formed by using thinned portions of the end portion of the lead portion 10. The first and second side plates 11 and 12 face each other with a distance. One end of the first side plate 11 and one end of the second side plate 12 are continued to each other while the other end of the first side plate 11 and the other end of the second side plate 12 form open end edges 111 and 121 respectively.Type: ApplicationFiled: June 28, 2004Publication date: June 30, 2005Applicant: TDK CORPORATIONInventors: Tohru Takahashi, Katsuyuki Takei
-
Patent number: 6894444Abstract: A shadow mask is formed by lapping a main mask and an auxiliary mask on each other. The auxiliary mask includes a porous portion having electron beam passage holes, nonporous portions situated individually at the opposite ends of the porous portion, a pair of skirt portions extending individually from the nonporous portions and lapped on the skirt portion of the main mask, and second beads formed individually on the skirt portions and overlapping first beads of the main mask. The height or width of the first beads and the second beads in a superposed portion in which the main mask and the auxiliary mask are lapped on each other is differentiated from that of the beads in non-superposed portions outside the superposed portion.Type: GrantFiled: January 22, 2004Date of Patent: May 17, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Takeshi Nakayama, Takuya Mashimo, Tohru Takahashi, Hiroyuki Oda
-
Publication number: 20050013546Abstract: An optical waveguide device 1 having optical fiber arrays 3a and 3b and a waveguide chip 2 connected to each other. Insertion holes 6a and 6b are provided for optical fiber holding members 5a and 5b comprising quartz glass or the like. Optical fiber cores of the optical fiber arrays 3a and 3b are inserted into the insertion holes 6a and 6b and are fixed with an adhesive material. Parts of covering optical fibers 4a and 4b are also fixed to apertures of the optical fiber holding members 5a and 5b with the adhesive material. According to the present invention, the optical fiber cores do not move inside the optical fiber arrays 3a and 3b in high-temperature or high-humidity environments. Accordingly, the use of the optical fiber arrays combined with the waveguide chip 2 provides a highly reliable optical waveguide device excellent in mechanical characteristics and transmission characteristics.Type: ApplicationFiled: June 29, 2004Publication date: January 20, 2005Inventors: Masahiro Nakamura, Yoshihiro Takahashi, Kozo Kiyotake, Tohru Takahashi, Kanji Shishido
-
Publication number: 20040256970Abstract: A shadow mask is composed of a main mask and a sub-mask lapped on each other. Each smaller hole that opens in the main mask has a diameter gradually reduced toward each larger hole, and each smaller hole that opens in the sub-mask has a substantially fixed diameter or a diameter gradually increased toward each larger hole. In this configuration, no part of the smaller-hole-side surface of the sub-mask is hit by an electron beam, so that the electron beam is reflected by a sidewall surface of the main mask only. Thus, a satisfactory screen can be obtained without causing undesired distinctions in brightness or belt-shaped boundaries to appear on the display screen.Type: ApplicationFiled: April 6, 2004Publication date: December 23, 2004Inventors: Tohru Takahashi, Takuya Mashimo, Hiroyuki Oda, Takeshi Nakayama
-
Patent number: 6831400Abstract: An electron gun assembly of a color cathode ray tube emits at least one electron beam having an oblong cross-sectional shape extending substantially in the horizontal direction, and emits three electron beams in a substantially non-convergent state toward the central portion of a phosphor screen. A deflection device comprises an auxiliary magnetic field generator for generating a quadrupole magnetic field component which focuses the electron beam with an oblong cross section more heavily in the horizontal direction than in the vertical direction. The auxiliary magnetic field generator is located in a given region in a tube-axis direction in which the horizontally deflecting coil is located.Type: GrantFiled: December 12, 2001Date of Patent: December 14, 2004Assignee: Kabushiki Kaisha ToshibaInventors: Tohru Takahashi, Masatsugu Inoue, Kumio Fukuda
-
Publication number: 20040212328Abstract: A shadow mask is formed by lapping a main mask and an auxiliary mask on each other. The auxiliary mask includes a porous portion having electron beam passage holes, nonporous portions situated individually at the opposite ends of the porous portion, a pair of skirt portions extending individually from the nonporous portions and lapped on the skirt portion of the main mask, and second beads formed individually on the skirt portions and overlapping first beads of the main mask. The height or width of the first beads and the second beads in a superposed portion in which the main mask and the auxiliary mask are lapped on each other is differentiated from that of the beads in non-superposed portions outside the superposed portion.Type: ApplicationFiled: January 22, 2004Publication date: October 28, 2004Inventors: Takeshi Nakayama, Takuya Mashimo, Tohru Takahashi, Hiroyuki Oda
-
Patent number: 6803713Abstract: A shadow mask includes a shadow mask body opposed to a phosphor screen, and its peripheral portion is fixed to a mask frame. The shadow mask body includes a rectangular effective portion that is formed having a large number of electron beam passage apertures. The effective portion has a major axis and a minor axis that pass through its center and extends at right angles to each other. The shadow mask comprises an auxiliary mask fixed to a region that contains the minor axis of the effective portion of the shadow mask body. The auxiliary mask is in the form of a strip that extends long in the direction of the minor axis and has a large number of electron beam passage apertures that communicate individually with the electron beam passage apertures of the effective portion.Type: GrantFiled: December 17, 2001Date of Patent: October 12, 2004Assignee: Kabushiki Kaisha ToshibaInventors: Tohru Takahashi, Masatsugu Inoue, Shigeo Takenaka
-
Patent number: 6798130Abstract: A deflection yoke of a cathode ray tube apparatus comprises a pair of saddle-type horizontal deflection coils located symmetrically with respect to a central axis and substantially in the shape of a truncated pyramid. A magnetic core substantially in the shape of a truncated cone is located coaxially around the horizontal deflection coils, and a pair of vertical deflection coils are wound on the magnetic core. A relation between a space vf between a large-diameter end portion of the magnetic core and each of the horizontal deflection coils and a space vr between a small-diameter end portion of the magnetic core and each of the horizontal deflection coils, with respect to the direction of a vertical axis perpendicular to the central axis, is given by vf≧vr.Type: GrantFiled: July 20, 2001Date of Patent: September 28, 2004Assignee: Kabushiki Kaisha ToshibaInventors: Nobuhiko Akoh, Tohru Takahashi, Masatsugu Inoue, Takashi Murai, Tadahiro Kojima, Yoshiaki Ito
-
Publication number: 20040183424Abstract: A shadow mask has a main mask and an auxiliary mask overlapped on the main mask. Electron beam passage apertures formed in the main mask and the auxiliary mask are arranged at given pitches in the direction of a major axis. Each electron beam passage aperture of the auxiliary mask is a communicating hole, which is formed of a smaller hole in that surface of the auxiliary mask which is in contact with the main mask and a larger hole opening in the opposite surface of the auxiliary mask. The smaller and larger holes of each electron beam passage aperture of the auxiliary mask have their respective central axes extending coaxially with each other and substantially at right angles to the surface of the auxiliary mask in the direction of the major axis.Type: ApplicationFiled: January 30, 2004Publication date: September 23, 2004Inventors: Takuya Mashimo, Tohru Takahashi, Hiroyuki Oda, Takeshi Nakayama
-
Publication number: 20040186212Abstract: A high-permittivity rubber compound (MX) to be over 10, 15, or 20 in relative permittivity is produced by filling, to 100 weight parts of base material (M10), 300 or more, 400 or more, or 500 or more weight parts of barium titanate family material as powder (M11) over 2000 in relative permittivity at temperatures from room temperature to 90° C. A high-permittivity rubber compound (M30, M60) crosslinked by peroxide is heat-treated (S21, S31) to remove decomposition residue of the peroxide, and powder (BT4) of barium titanate family material of industrial grade is washed (S09) by de-ionized water (Mc) to remove ionic impurities, suppressing degradation of insulating characteristics.Type: ApplicationFiled: March 17, 2003Publication date: September 23, 2004Applicant: FUJIKURA LTD.Inventors: Hiroshi Niinobe, Tohru Takahashi, Kazuo Watanabe, Shoutaroh Yoshida
-
Publication number: 20040160158Abstract: A shadow mask is arranged to face a phosphor screen formed on an inner surface of a panel. A plurality of aperture columns are formed in parallel in the shadow mask. Each aperture column includes a plurality of apertures arranged in line at a predetermined interval. On both sides of each aperture column on the surface of the shadow mask facing the electron gun, stripe-shaped dielectric layers for acting on electron beams toward the apertures are formed respectively, and extend in substantial parallel with the aperture columns. The shadow mask is manufactured in such a manner that stripe-shaped insulating material layers are formed on the surface of a mask base material facing the electron gun, the mask base material is thereafter shaped into a predetermined shape, and the insulating material layers on the shaped mask are sintered.Type: ApplicationFiled: September 20, 2002Publication date: August 19, 2004Inventors: Tohru Takahashi, Masatsugu Inoue, Kumio Fukuda, Masaru Nikaido, Hitoshi Shiozawa, Akiyoshi Nakamura, Satoshi Ishikawa
-
Patent number: D525443Type: GrantFiled: December 15, 2003Date of Patent: July 25, 2006Assignee: Takara Belmont CorporationInventor: Tohru Takahashi