Patents by Inventor Tadahiro Kojima
Tadahiro Kojima 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).
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Publication number: 20100122991Abstract: A device for closing a spout of a flexible container is provided. The device includes a connection tube and a sealable cap having an outer casing member with a lower, outer circumferential surface, an attachment member annularly positioned on a portion of the lower, outer circumferential surface, and an inner casing member having an inner casing sidewall and a bottom disc-shaped occlusion plate defining a cylindrical void space configured to receive a connection tube. The plate can be integrally connected to the inner casing sidewall via a thin-wall section sized to break by the insertion of an insertion edge of the connection tube. The device can also include an overcap sized to mate to the sealable cap.Type: ApplicationFiled: November 17, 2008Publication date: May 20, 2010Inventors: Akihiro Taguchi, Tadahiro Kojima, Toshio Mitsuma, Akira Sakabe
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Publication number: 20070126332Abstract: The radii of curvature RD, RS and RL along a diagonal axis, a short side and a long side of an outer surface of a useful portion of a panel whose inner surface is provided with a phosphor screen satisfy RD?10 m, RS>RD, and RL>RD. This makes it possible to provide a color picture tube that has an excellent visibility and is not susceptible to the deterioration in color purity due to doming, while including a shadow mask with excellent formability and strength.Type: ApplicationFiled: November 13, 2006Publication date: June 7, 2007Applicant: Matsushita Toshiba Picture Display Co., Ltd.Inventors: Takashi Murai, Tadahiro Kojima, Takeshi Nakayama, Nobuyuki Seto
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Publication number: 20070018556Abstract: A radius of curvature of an arc passing through three points on an outer surface of a panel, which respectively correspond to a pair of diagonal axis ends on one diagonal axis of a phosphor screen and a center of the phosphor screen, is 10,000 mm or more. A shadow mask is made of an aluminum killed material. Assuming that a thickness of the panel is Td at the diagonal axis end of the phosphor screen, Tmd at an intermediate point between the diagonal axis end and the center, Th at a major axis end of the phosphor screen, and Tmh at an intermediate point between the major axis end and the center, 0.5 ?Tmd/Td?0.62, and 0.65?Tmh/Th?0.80 are satisfied. Because of this, an inexpensive color picture tube can be provided, in which the visibility is excellent, the degradation in color purity caused by doming is suppressed, and the formability of the shadow mask is enhanced.Type: ApplicationFiled: June 2, 2006Publication date: January 25, 2007Applicant: Matsushita Toshiba Picture Display Co., Ltd.Inventors: Tadahiro Kojima, Takashi Murai, Takeshi Nakayama
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Patent number: 6879095Abstract: A deflection yoke on a yoke mounting portion with a truncated pyramid shape has a pair of saddle-type horizontal deflecting coils that is located symmetrically with a central axis and has a truncated pyramid shape. A core with a truncated cone shape is coaxially located on the outer periphery of the horizontal deflecting coils. A pair of vertical deflecting coils are toroidally wound around the core. If the positions of a horizontal axis and a vertical axis are given by 0° and 90°, respectively, in the circumference direction around the central axis, the winding of one vertical deflecting coil has a starting point on the horizontal-axis side within the range of 5°-30° and is distributed from the starting point to 90° and wound symmetrically with the vertical axis. The windings of the vertical deflecting coils are wound symmetrically with the horizontal axis.Type: GrantFiled: October 28, 2003Date of Patent: April 12, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Yoshiaki Ito, Tadahiro Kojima, Takashi Murai, Masatsugu Inoue
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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
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Patent number: 6756726Abstract: In a semi-toroidal deflection yoke, a middle point CL(M) of an entire length along a tube axis from a large-diameter portion to a small-diameter portion of a magnetic core lies on a small-diameter portion side of a horizontal deflection coil relative to a point lying at a distance of 0.41×HL along the tube axis from a large-diameter portion of the horizontal deflection coil, where HL is an entire length of the horizontal deflection coil along the tube axis. The deflection yoke deflects electron beams efficiently, reducing the deflection electric power the deflection yoke requires. A cathode ray tube provided with the deflection yoke can suppress pincushion type distortion which may occur in the vertical direction of a screen, and can therefore display images of satisfactory quality.Type: GrantFiled: June 20, 2003Date of Patent: June 29, 2004Assignee: Kabushiki Kaisha ToshibaInventors: Masaru Ogawa, Sadami Sekiguchi, Tadahiro Kojima, Takashi Murai
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Publication number: 20040100212Abstract: A deflection yoke on a yoke mounting portion with a truncated pyramid shape has a pair of saddle-type horizontal deflecting coils that is located symmetrically with a central axis and has a truncated pyramid shape. A core with a truncated cone shape is coaxially located on the outer periphery of the horizontal deflecting coils. A pair of vertical deflecting coils are toroidally wound around the core. If the positions of a horizontal axis and a vertical axis are given by 0° and 90°, respectively, in the circumference direction around the central axis, the winding of one vertical deflecting coil has a starting point on the horizontal-axis side within the range of 5°-30° and is distributed from the starting point to 90° and wound symmetrically with the vertical axis. The windings of the vertical deflecting coils are wound symmetrically with the horizontal axis.Type: ApplicationFiled: October 28, 2003Publication date: May 27, 2004Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yoshiaki Ito, Tadahiro Kojima, Takashi Murai, Masatsugu Inoue
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Publication number: 20030222566Abstract: In a semi-toroidal deflection yoke, a middle point CL(M) of an entire length along a tube axis from a large-diameter portion to a small-diameter portion of a magnetic core lies on a small-diameter portion side of a horizontal deflection coil relative to a point lying at a distance of 0.41×HL along the tube axis from a large-diameter portion of the horizontal deflection coil, where HL is an entire length of the horizontal deflection coil along the tube axis. The deflection yoke deflects electron beams efficiently, reducing the deflection electric power the deflection yoke requires. A cathode ray tube provided with the deflection yoke can suppress pincushion type distortion which may occur in the vertical direction of a screen, and can therefore display images of satisfactory quality.Type: ApplicationFiled: June 20, 2003Publication date: December 4, 2003Applicant: Kabushiki Kaisha ToshibaInventors: Masaru Ogawa, Sadami Sekiguchi, Tadahiro Kojima, Takashi Murai
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Patent number: 6452321Abstract: A vacuum envelope of a cathode ray tube includes a face panel having a phosphor screen formed on the inner surface, a funnel joined to the face panel and having a yoke-mounting section, and an electron gun for emitting electron beams toward the phosphor screen. A deflection yoke mounted on the yoke-mounting section of the funnel has a first open end portion positioned on the side of the phosphor screen, and a correcting coil for correcting the positional deviation of the displayed image in a rotating direction is arranged at the first open end portion. The correcting coil is formed substantially rectangular to conform with the cross sectional shape of each of the yoke-mounting section and deflection coils of the deflection yoke.Type: GrantFiled: June 2, 1999Date of Patent: September 17, 2002Assignee: Kabushiki Kaisha ToshibaInventor: Tadahiro Kojima
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Publication number: 20020027409Abstract: A vacuum envelope of a cathode ray tube includes a face panel having a phosphor screen formed on the inner surface, a funnel joined to the face panel and having a yoke-mounting section, and an electron gun for emitting electron beams toward the phosphor screen. A deflection yoke mounted on the yoke-mounting section of the funnel has a first open end portion positioned on the side of the phosphor screen, and a correcting coil for correcting the positional deviation of the displayed image in a rotating direction is arranged at the first open end portion. The correcting coil is formed substantially rectangular to conform with the cross sectional shape of each of the yoke-mounting section and deflection coils of the deflection yoke.Type: ApplicationFiled: June 2, 1999Publication date: March 7, 2002Inventor: TADAHIRO KOJIMA
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Publication number: 20020008458Abstract: 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: ApplicationFiled: July 20, 2001Publication date: January 24, 2002Inventors: Nobuhiko Akoh, Tohru Takahashi, Masatsugu Inoue, Takashi Murai, Tadahiro Kojima, Yoshiaki Ito
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Patent number: 6002203Abstract: A cathode ray tube includes a vacuum envelope having a substantially rectangular panel, a cylindrical neck, and a funnel connecting the panel and the neck. A phosphor screen arranged on the inner surface of the panel generates luminescence upon impingement of electron beams, which are generated by an electron gun assembly disposed in the neck. In order to create a image visible through the panel, a deflection yoke is mounted on the outer surface of the funnel to generate a magnetic field in the funnel, deflect the electron beams, and thereby scan the phosphor screen. According to the present invention, the portion of the funnel over which the deflection yoke is mounted is formed such that the power required to generate a deflection field capable of scanning substantially the entire phosphor screen may be reduced.Type: GrantFiled: May 28, 1997Date of Patent: December 14, 1999Assignee: Kabushiki Kaisha ToshibaInventors: Masahiro Yokota, Yuuichi Sano, Eiji Kamohara, Tadahiro Kojima
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Patent number: 5929559Abstract: A funnel of a cathode ray tube includes a yoke attachment portion on which a deflection yoke is mounted so as to deflect the electron beam emitted from an electron gun along horizontal and vertical axis. At least one cross section of the yoke attachment portion, perpendicular to the tube axis, has an inner contour which is substantially rectangular with four sides. The sides are defined by convexities curved toward the tube axis and each having a peak on the horizontal or vertical axis. The inner contour of the cross section faces the electron beam passage region with a substantially constant gap.Type: GrantFiled: September 30, 1997Date of Patent: July 27, 1999Assignee: Kabushiki Kaisha ToshibaInventors: Yuuichi Sano, Masahiro Yokota, Tadahiro Kojima, Eiji Kamohara
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Patent number: 5763995Abstract: This cathode ray tube includes a vacuum envelope having a substantially rectangular panel, a funnel formed contiguous to the panel, and a cylindrical neck formed contiguous to the small-diameter end portion of the funnel, an electron gun assembly disposed in the neck to generate electron beams, and a deflection yoke mounted on the outer side of the funnel near the neck side over a predetermined range to form a magnetic field in the funnel, thereby deflecting the electron beams along the major and minor axes of the panel. Of the predetermined range of the funnel, at the neck side, the funnel is formed to have an outer shape with a section which is gradually deformed, from the neck side to the panel side, from a circular shape to a non-circular shape having a maximum diameter along a direction other than the major and minor axes. The funnel of the predetermined range is formed to have an outer shape with a section that satisfies a relation:0.3.ltoreq..DELTA.HV/L.ltoreq.0.Type: GrantFiled: May 13, 1997Date of Patent: June 9, 1998Assignee: Kabushiki Kaisha ToshibaInventors: Yuuichi Sano, Masahiro Yokota, Tadahiro Kojima, Eiji Kamohara
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Patent number: 5610473Abstract: A color cathode-ray tube comprises a mask unit arranged between a face panel and an electron gun. The mask unit comprises a shadow mask and a mask frame supporting the shadow mask with being applied with tension. The shadow mask is formed of a substantially rectangular thin plate, arranged to face a phosphor screen formed on an inner surface of the face panel, and has a number of electron beam apertures through which electron beams emitted from the electron gun pass. The mask frame comprises a substantially rectangular frame body which has a pair of first sidewalls facing each other and a pair of second sidewalls facing each other, and a pair of mask fixing sections secured to a pair of opposite side edge portions of the shadow mask and extending along the side edge portions.Type: GrantFiled: June 7, 1995Date of Patent: March 11, 1997Assignee: Kabushiki Kaisha ToshibaInventors: Masahiro Yokota, Tadahiro Kojima, Shuuji Makimoto
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Patent number: 5272855Abstract: A process for manufacturing a fluid, including the steps of punching spout or outlet plug fitting holes in both a plate of a tubular blank of the carton and a plastic film constituting the internal bag at a predetermined place where a spout or outlet plug is attached to the tubular blank and the internal bag, the tubular blank containing the plastic film and having a closed bottom wall, fitting the spout or outlet plug in the spout or outlet plug fitting holes from inside the tubular plug, and welding the spout or outlet plug to the plastic film.Type: GrantFiled: August 4, 1992Date of Patent: December 28, 1993Assignee: Toppan Printing Co., Ltd.Inventors: Toshihide Togi, Kuniyasu Ohara, Tadahiro Kojima, Masatoshi Fujima, Tatuo Furuse, Kiyoshi Tsuzuki, Shigenobu Sato