Patents by Inventor Kazunori Hirao
Kazunori Hirao 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: 6258222Abstract: An electrolyzer 1 for electrolyzing water existing between electrode plates 4, 5 disposed at a prescribed interval by imposing a voltage between the electrode plates is arranged such that at least the electrode plate 5 acting as an anode comprises a ferrite electrode including at least one hole 15 is formed therein, the interval between the hole and an extreme or terminal end of an electrode terminal 9 inserted into the hole 15 is filled with a conductive metal coupling member 16 that becomes deformed when the electrode terminal 9 is inserted in the hole so that the ferrite electrode 5 is made conductive to and arranged integrally with the electrode terminal 9.Type: GrantFiled: December 22, 1998Date of Patent: July 10, 2001Assignee: Omega Go., Ltd.Inventors: Shinichi Nakamura, Kazunori Hirao, Kunihiko Fukuzuka
-
Patent number: 6195075Abstract: In a plasma display device having a three-dimensional matrix wiring arrangement of anodes, cathodes and address electrodes, writing discharge is caused between anodes and address electrodes to temporarily store writing charge on a dielectric layer, and the writing charge is discharged as an auxiliary discharge by applying a sustaining voltage to the cathodes, thereby inducing main discharge between the anodes and the cathodes.Type: GrantFiled: July 15, 1998Date of Patent: February 27, 2001Assignee: Matsushita Electronics CorporationInventors: Taichi Shino, Hajime Mae, Kazunori Hirao, Yukiharu Ito, Naoki Kosugi
-
Patent number: 6150766Abstract: A plurality of scanning electrodes and a plurality of sustaining electrodes parallel to each other are located on an inner face of a first glass substrate. Each of the scanning electrodes and each of the sustaining electrodes form a pair. A dielectric layer and a protection layer are formed on the first glass substrate in this order, covering the electrodes. A plurality of data electrodes perpendicular to the scanning electrodes and the sustaining electrodes are located on an inner face of a second glass substrate which is located opposed to the first glass substrate with a discharge space interposed therebetween. In an AC-type PDP having such a structure, at least one of the plurality of scanning electrodes and the plurality of sustaining electrodes are divided into a plurality of groups, and pulses having different phases are applied to the electrodes in different groups, thereby causing sustaining discharge. The scanning electrodes and the sustaining electrodes may be comb-like with teeth.Type: GrantFiled: November 7, 1996Date of Patent: November 21, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Taichi Shino, Takio Okamoto, Kazunori Hirao, Koichi Itsuda, Yukiharu Ito, Takao Wakitani, Toru Hirayama
-
Patent number: 6118220Abstract: A plurality of scanning electrodes and a plurality of sustaining electrodes parallel to each other are located on an inner face of a first glass substrate. Each of the scanning electrodes and each of the sustaining electrodes form a pair. A dielectric layer and a protection layer are formed on the first glass substrate in this order, covering the electrodes. A plurality of data electrodes perpendicular to the scanning electrodes and the sustaining electrodes are located on an inner face of a second glass substrate which is located opposed to the first glass substrate with a discharge space interposed therebetween. In an AC-type PDP having such a structure, at least one of the plurality of scanning electrodes and the plurality of sustaining electrodes are divided into a plurality of groups, and pulses having different phases are applied to the electrodes in different groups, thereby causing sustaining discharge. The scanning electrodes and the sustaining electrodes may be comb-like with teeth.Type: GrantFiled: July 14, 1999Date of Patent: September 12, 2000Assignee: Matsushita Electronics CorporationInventors: Taichi Shino, Takio Okamoto, Kazunori Hirao, Koichi Itsuda, Yukiharu Ito, Takao Wakitani, Toru Hirayama
-
Patent number: 6072279Abstract: A plurality of scanning electrodes and a plurality of sustaining electrodes parallel to each other are located on an inner face of a first glass substrate. Each of the scanning electrodes and each of the sustaining electrodes form a pair. A dielectric layer and a protection layer are formed on the first glass substrate in this order, covering the electrodes. A plurality of data electrodes perpendicular to the scanning electrodes and the sustaining electrodes are located on an inner face of a second glass substrate which is located opposed to the first glass substrate with a discharge space interposed therebetween. In an AC-type PDP having such a structure, at least one of the plurality of scanning electrodes and the plurality of sustaining electrodes are divided into a plurality of groups, and pulses having different phases are applied to the electrodes in different groups, thereby causing sustaining discharge. The scanning electrodes and the sustaining electrodes may be comb-like with teeth.Type: GrantFiled: March 29, 1999Date of Patent: June 6, 2000Assignee: Matsushita Electronics CorporationInventors: Taichi Shino, Takio Okamoto, Kazunori Hirao, Koichi Itsuda, Yukiharu Ito, Takao Wakitani, Toru Hirayama
-
Patent number: 5969478Abstract: A plurality of scanning electrodes and a plurality of sustaining electrodes parallel to each other are located on an inner face of a first glass substrate. Each of the scanning electrodes and each of the sustaining electrodes form a pair. A dielectric layer and a protection layer are formed on the first glass substrate in this order, covering the electrodes. A plurality of data electrodes perpendicular to the scanning electrodes and the sustaining electrodes are located on an inner face of a second glass substrate which is located opposed to the first glass substrate with a discharge space interposed therebetween. In an AC-type PDP having such a structure, at least one of the plurality of scanning electrodes and the plurality of sustaining electrodes are divided into a plurality of groups, and pulses having different phases are applied to the electrodes in different groups, thereby causing sustaining discharge. The scanning electrodes and the sustaining electrodes may be comb-like with teeth.Type: GrantFiled: July 1, 1998Date of Patent: October 19, 1999Assignee: Matsushita Electronics CorporationInventors: Taichi Shino, Takio Okamoto, Kazunori Hirao, Koichi Itsuda, Yukiharu Ito, Takao Wakitani, Toru Hirayama
-
Patent number: 5872425Abstract: In a plasma display device having a three-dimensional matrix wiring arrangement of anodes, cathodes and address electrodes, writing discharge is caused between anodes and address electrodes to temporarily store writing charge on a dielectric layer, and the writing charge is discharged as an auxiliary discharge by applying a sustaining voltage to the cathodes, thereby inducing main discharge between the anodes and the cathodes.Type: GrantFiled: April 30, 1996Date of Patent: February 16, 1999Assignee: Matsushita Electronics CorporationInventors: Taichi Shino, Kazunori Hirao, Naoki Kosugi
-
Patent number: 5841232Abstract: An AC plasma display panel includes a plurality of opaque scanning electrodes (3b, 3c) and maintaining electrodes (4b, 4c) which are parallel to each other, formed on a first glass substrate (1) at the display side of the display, a plurality of ribs (9) formed on a second glass substrate (7) and arranged orthogonally to the scanning and maintaining electrodes, a data electrode (8) formed on the second glass substrate (7), positioned between the ribs and arranged parallel to the ribs (9), wherein a discharge cell (2) is defined by dividing the space between two ribs (9) and includes at least two of the scanning electrodes (3b, 3c) and at least two of the maintaining electrodes (4b, 4c). The maintaining discharge is generated between the two scanning electrodes (3b, 3c) and the two maintaining electrodes (4b, 4c). Consequently, a discharge region can be widened without decreasing the opening ratio, and an AC plasma display panel with high brightness and high efficiency can be obtained.Type: GrantFiled: April 9, 1997Date of Patent: November 24, 1998Assignee: Matsushita Electronics CorporationInventors: Kazunori Hirao, Toru Hirayama, Koji Aoto
-
Patent number: 5730637Abstract: A DC gas discharge type image display device includes a front glass substrate; a rear glass substrate facing the front glass substrate, interposing a discharge gas therebetween; a set of anodes including a plurality of line electrodes formed on the rear glass substrate; a set of cathodes including a plurality of line electrodes placed on the front glass substrate so as to perpendicularly cross the set of anodes; and a plurality of discharge cells, each being provided so as to correspond to each of the cross points of the set of anodes and the set of cathodes. The device is driven in a refresh driving method or a memory driving method. As to the production of this device, the set of cathodes is formed by a spraying method. The cathodes are made from aluminum, nickel, an aluminum alloy or a nickel alloy. The discharge gas is a mixed gas of He and Xe.Type: GrantFiled: June 18, 1996Date of Patent: March 24, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shigeo Suzuki, Hidenobu Shintaku, Taku Watanabe, Mitsuo Asabe, Kazuo Takahashi, Yoshiro Abe, Hiroki Kono, Kazunori Hirao
-
Patent number: 5656893Abstract: A plurality of scanning electrodes and a plurality of sustaining electrodes parallel to each other are located on an inner face of a first glass substrate. Each of the scanning electrodes and each of the sustaining electrodes form a pair. A dielectric layer and a protection layer are formed on the first glass substrate in this order, covering the electrodes. A plurality of data electrodes perpendicular to the scanning electrodes and the sustaining electrodes are located on an inner face of a second glass substrate which is located opposed to the first glass substrate with a discharge space interposed therebetween. In an AC-type PDP having such a structure, at least one of the plurality of scanning electrodes and the plurality of sustaining electrodes are divided into a plurality of groups, and pulses having different phases are applied to the electrodes in different groups, thereby causing sustaining discharge. The scanning electrodes and the sustaining electrodes may be comb-like with teeth.Type: GrantFiled: April 25, 1995Date of Patent: August 12, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Taichi Shino, Takio Okamoto, Kazunori Hirao, Koichi Itsuda, Yukiharu Ito, Takao Wakitani, Toru Hirayama
-
Patent number: 5646482Abstract: In a DC gas discharge type image display apparatus including: a front glass substrate; a rear glass substrate facing the front glass substrate, interposing a discharge gas therebetween; a set of anodes including a plurality of line electrodes formed on the rear glass substrate; a set of cathodes including a plurality of line electrodes placed on the front glass substrate so as to perpendicularly cross the set of anodes; and a plurality of discharge cells, each being provided so as to correspond to each of the cross points of the set of anodes and the set of cathodes, the apparatus being driven in a refresh driving method or a memory driving method, the set of cathodes are formed by a spraying method. The cathodes are made from aluminum, nickel, an aluminum alloy or a nickel alloy. The discharge gas is a mixed gas of He and Xe.Type: GrantFiled: May 30, 1995Date of Patent: July 8, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shigeo Suzuki, Hidenobu Shintaku, Taku Watanabe, Mitsuo Asabe, Kazuo Takahashi, Yoshiro Abe, Hiroki Kono, Kazunori Hirao
-
Patent number: 5629716Abstract: A plurality of filaments are stretched in parallel on a rear plate, and an insulating plate is provided so as to cover the filaments. In the insulating plate, a plurality of through-holes are formed along the longitudinal direction of the respective filaments for exposing parts thereof. Each through-hole and phosphor layers, which are provided on the insulating layer adjacent to the through-hole, constitute one unit picture element. The respective phosphor layers in the respective picture element are installed in a plurality of cavities formed in a rib provided on a lower surface of the insulating plate, whereby separated from the neighboring phosphor layers. The respective cavities function as a discharge room, with a light-transmissive front plate, formed on the rib, as a lid and a portion of the insulating plate corresponding to the phosphor layer as a bottom. The respective discharge rooms overlap the through-hole at one end in the longitudinal direction thereof.Type: GrantFiled: July 14, 1994Date of Patent: May 13, 1997Assignee: Matsushita Electronics CorporationInventors: Takio Okamoto, Kazunori Hirao, Toru Hirayama, Hajime Mae, Takao Wakitani, Yukiharu Ito, Kouichi Nomura, Seiji Matsubara