Patents by Inventor Koichi Kugimiya
Koichi Kugimiya 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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Patent number: 5906871Abstract: A latent image comprising a first substance formed on a substrate of a second substance having a surface tension different from a surface tension of the first substance, the first substance and the substrate having a difference of 0.1 to 100 nm in height from each other. The latent image is formed by a method comprising the-step of subjecting a substrate of a first substance to a chemical treatment or a physical treatment to form a surface of a second substance which has a surface tension different from a surface tension of the first substance and has a difference of 0.1 to 100 nm in height from the substrate on part of the substrate. The latent image is developed by a method comprising the steps of contacting a latent image comprising a first substance formed on a substrate of a second substance having a surface tension different from a surface tension of the first substance with a third substance different from the first substance and the second substance, and applying a developing ray to the latent image.Type: GrantFiled: May 14, 1996Date of Patent: May 25, 1999Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuo Takebe, Koichi Kugimiya, Norihisa Mino, Tohru Nakagawa
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Patent number: 5849400Abstract: A magnetic thin film having excellent soft magnetic properties formed by alternately laminating a main magnetic layer and an intermediate layer, in which the main magnetic layer includes magnetic crystal grains substantially having a columnar structure which have an average height dl and an average diameter ds forming a shape ratio of 0.3.ltoreq.ds/dl.ltoreq.90.9, and the intermediate layer has saturation magnetic flux density of at least 0.1 tesla less than the main magnetic layer. The main magnetic layer and the intermediate layer having saturation magnetic flux density of at least 0.1 tesla less than the main magnetic layer are alternately laminated. It is preferable that the main magnetic layer has a thickness of 3 to 100 nm, and the intermediate layer has a thickness of 0.1 to 10 nm. In addition, it is preferable that a thickness of the entire laminated structure is in the range of about 100 nm to 10 .mu.m.Type: GrantFiled: January 30, 1996Date of Patent: December 15, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masayoshi Hiramoto, Osamu Inoue, Koichi Kugimiya, Kenji Iijima
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Patent number: 5709811Abstract: A magnetic material for microwave, comprising a phase having garnet structure, said phase comprising a component represented by Formula I(A.sub.3-a Bi.sub.a)B.sub.x O.sub.y Formula Iwhere A represents a component comprising at least one element selected from yttrium (Y) and rare earth elements, B represents a component comprising Fe, a represents a number in the range of 0 to less than 2.00, x represents a number in the range of 4.76 to less than 5.00, and y represents a number satisfying an inequality 1.5(3+x).ltoreq.y.ltoreq.12.Type: GrantFiled: April 8, 1996Date of Patent: January 20, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshifumi Satoh, Hirotaka Furukawa, Osamu Inoue, Takayuki Takeuchi, Kenji Iijima, Koichi Kugimiya
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Patent number: 5700745Abstract: The present invention provides dielectric ceramics with less variation of temperature coefficient at a resonant frequency due to heating history during the sintering of ZrTiO.sub.4 and ZrO.sub.2 --SnO.sub.2 --TiO.sub.2 ceramics, and having a high unloaded Q value and a high dielectric constant, and a temperature coefficient at a resonant frequency which is widely variable as desired, and dielectric resonators using the dielectric ceramics which have a high unloaded Q value and a strong electrode layer. The main components of the dielectric ceramics may be expressed by the formula: xZrO.sub.2 --yTiO.sub.2 --zA.sub.(1+u)/3 B.sub.(2-u)/3 O.sub.2 wherein A denotes at least one component selected from the group (A) consisting of Mg, Co, Zn, Ni and Mn, B denotes at least one component selected from the group (B) consisting of Nb and Ta, and x, y, z and u (x, y and z are molar fractions and u is a value within the range from 0 to 1.90) have the relation of x+y+z=1.0, 0.10.ltoreq.x.ltoreq.0.60, 0.20.ltoreq.y.ltoreq.Type: GrantFiled: November 17, 1995Date of Patent: December 23, 1997Assignee: Matsushita Electric Industrial Co. Ltd.Inventors: Kojiro Okuyama, Koji Shimoyama, Syunichiro Kawashima, Koichi Kugimiya
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Patent number: 5589221Abstract: A magnetic thin film having excellent soft magnetic properties formed by alternately laminating a main magnetic layer and an intermediate layer, in which the main magnetic layer includes magnetic crystal grains substantially having a columnar structure which have an average height dl and an average diameter ds forming a shape ratio of 0.3.ltoreq.ds/dl.ltoreq.0.9, and the intermediate layer has saturation magnetic flux density of at least 0.1 tesla less than the main magnetic layer. The main magnetic layer and the intermediate layer having saturation magnetic flux density of at least 0.1 tesla less than the main magnetic layer are alternately laminated. It is preferable that the main magnetic layer has a thickness of 3 to 100 nm, and the intermediate layer has a thickness of 0.1 to 10 nm. In addition, it is preferable that a thickness of the entire laminated structure is in the range of about 100 nm to 10 nm.Type: GrantFiled: May 11, 1995Date of Patent: December 31, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masayoshi Hiramoto, Osamu Inoue, Koichi Kugimiya, Kenji Iijima
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Patent number: 5518642Abstract: An oxide magnetic material provided by the present invention contains, as main components, 55 to 59 mol % of Fe.sub.2 O.sub.3 ; 35 to 42 mol % of MnO; and 6 mol % or less of ZnO, and further contains, as sub-components, 0.05 to 0.3 wt % of CaO; and 0.005 to 0.05 wt % of SiO.sub.2. The other oxide magnetic material provided by the present invention contains, as main components, 61 to 67 mol % of Fe.sub.2 O.sub.3 ; 3 to 36 mol % of MnO; and 30 mol % or less of ZnO, and further contains, as sub-components, 0.05 to 0.5 wt % of CaO; and 0.005 to 0.2 wt % of SiO.sub.2. Such materials can further contain one or more kinds of oxides selected from the group consisting of ZrO.sub.2, HfO.sub.2, Ta.sub.2 O.sub.5, Cr.sub.2 O.sub.3, MoO.sub.3, WO.sub.3, Al.sub.2 O.sub.3, Ga.sub.2 O.sub.3, In.sub.2 O.sub.3, GeO.sub.2, SnO.sub.2, Sb.sub.2 O.sub.3 and Bi.sub.2 O.sub.3.Type: GrantFiled: September 28, 1994Date of Patent: May 21, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Osamu Inoue, Nobuya Matsutani, Koichi Kugimiya, Osamu Ishii, Yasuyuki Aono
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Patent number: 5512353Abstract: The ceramic substrate for electronic circuit of the present invention comprises a ceramic layer and a conductive layer which is patterned on the ceramic layer, wherein the conductive layer comprises copper or an alloy containing copper as its main component. The ceramic layer entirely comprises a complex oxide or an oxide solid solution containing copper element and at least one component excluding copper element. Moreover, the ceramic layer is insulated.Type: GrantFiled: June 20, 1994Date of Patent: April 30, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoichiro Yokotani, Hamae Ando, Koichi Kugimiya
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Patent number: 5470808Abstract: The invention provides a dielectric ceramic including as the main component a complex oxide formed of both Zr and Ti, at least one component selected from the group (A) consisting of {Mg, Co, Zn, Ni and Mn} and at least one component selected from the group (B) consisting of {Nb and Ta} and a TE.sub.01 .delta.-mode dielectric resonator including the dielectric ceramic, and also the invention provides a dielectric ceramic composition expressed by Formula (a):xZrO.sub.2 --yTiO.sub.2 --zA.sub.(1+w)/3 Nb.sub.(2-w)/3 O.sub.2Formula (a)wherein A denotes at least one component selected from the group (A) consisting of {Mg, Co, Zn, Ni and Mn},x, y and z denote molar fractions ranging from 0.10 to 0.60, 0.20 to 0.60 and 0.01 to 0.70, respectively, and have the relation represented by Formula (a):x+y+z=1 Formula (a)and w denotes a value of 0 to 1.50, and a TE.sub.01 .delta.-mode dielectric resonator in which using the dielectric ceramic.Type: GrantFiled: October 17, 1994Date of Patent: November 28, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kojiro Okuyama, Yoichiro Yokotani, Koichi Kugimiya
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Patent number: 5403788Abstract: A dielectric ceramic composite material comprising a dielectric ceramics and a glass having a softening temperature lower than the sintering temperature of the dielectric ceramics, wherein said particles of the dielectric ceramics are randomly dispersed in a matrix of the glass. This composite material can be formed by molding a mixture of the dielectric ceramics powder and glass powder at first, and by firing this mold (including a film thereof) at the softening temperature of the glass or higher. The obtained dielectric ceramics composite material can be extensively utilized as various ceramic functional elements or electronic components incorporated in various piezoelectric, pyroelectric, ferroelectric memory, actuator elements and many others.Type: GrantFiled: April 21, 1994Date of Patent: April 4, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masamitsu Nishida, Koichi Kugimiya
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Patent number: 5356843Abstract: The invention provides a dielectric ceramic including as the main component a complex oxide formed of both Zr and Ti, at least one component selected from the group (A) consisting of {Mg, Co, Zn, Ni and Mn} and at least one component selected from the group (B) consisting of {Nb and Ta} and a TE.sub.01 .delta.-mode dielectric resonator including the dielectric ceramic, and also the invention provides a dielectric ceramic composition expressed by Formula (a):xZrO.sub.2 --yTiO.sub.2 --zA.sub.(1+w)/3 Nb.sub.(2-w)/3 O.sub.2(a)wherein A denotes at least one component selected from the group (A) consisting of {Mg, Co, Zn, Ni and Mn},x, y and z denote molar fractions ranging from 0.10 to 0.60, 0.20 to 0.60 and 0.01 to 0.70, respectively, and have the relation represented by Formula (.alpha.):x+y+z=1 (.alpha.)and w denotes a value of 0 to 1.50, and a TE.sub.01 .delta.-mode dielectric resonator in which using the dielectric ceramic.Type: GrantFiled: September 3, 1993Date of Patent: October 18, 1994Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kojiro Okuyama, Yoichiro Yokotani, Koichi Kugimiya
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Patent number: 5352522Abstract: A composite material is provided which includes a discrete phase including grains made of a first substance; and a continuous phase including a thin coating film made of a second substance and formed on the surface of each of the grains. The thin coating film has a mean thickness smaller than the mean particle size of the grains. The grains are separated substantially from each other by the thin coating film. The porosity of the composite material is 5% or less.Type: GrantFiled: September 16, 1992Date of Patent: October 4, 1994Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Koichi Kugimiya, Yasuhiro Sugaya, Osamu Inoue, Mitsuo Satomi, Ken Hirota
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Patent number: 5350628Abstract: A magnetic material is provided which includes a discrete phase including grains made of a first substance which comprises a magnetic metal; and a continuous phase including a thin coating film made of a second substance which comprises a dielectric or insulating substance. The thin coating film is formed on the surface of the grains and has a mean thickness smaller than the mean particle size of the grains. The grains are separated substantially from each other by the thin coating film.Type: GrantFiled: November 19, 1992Date of Patent: September 27, 1994Assignee: Matsushita Electric Industrial Company, Inc.Inventors: Koichi Kugimiya, Yasuhiro Sugaya, Osamu Inoue, Ken Hirota, Mitsuo Satomi
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Patent number: 5320284Abstract: In an agitating mill for producing the objective fine powder, the agitating medium having an average particle diameter of no more than 0.6 mm is charged in an annular gap between the external side wall of the agitator and the internal side wall of the milling vessel. Thereby the agitator can be rotated at a peripheral speed of no less than 30 m/s, and it results in a high grinding rate and reduced amount of impurity which means worn-out grinding media included in the objective fine powder.Type: GrantFiled: October 29, 1991Date of Patent: June 14, 1994Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masamitsu Nishida, Hamae Ando, Koichi Kugimiya
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Patent number: 5246898Abstract: High-frequency dielectric ceramics which contains the oxide of a complex perovskite structure as the main component, have a mean crystal gain size of sintered ceramic controlled to within the range of 5 .mu.m to 20 .mu.m and a porosity not exceeding 7% and provides high unloaded Q without requiring long-hour sintering or heat treatment.Type: GrantFiled: November 9, 1992Date of Patent: September 21, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takuya Fujimaru, Masamitsu Nishida, Koichi Kugimiya
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Patent number: 5238507Abstract: A magnetic material is provided which includes a discrete phase including grains made of a first substance which comprises a magnetic metal; and a continuous phase including a thin coating film made of a second substance which comprises a dielectric or insulating substance. The thin coating film is formed on the surface of the grains and has a mean thickness smaller than the mean particle size of the grains. The grains are separated substantially from each other by the thin coating film.Type: GrantFiled: June 8, 1990Date of Patent: August 24, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Koichi Kugimiya, Yasuhiro Sugaya, Osamu Inoue, Ken Hirota, Mitsuo Satomi
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Patent number: 5217818Abstract: A substrate material for a magnetic head, which comprises an oxide composed mainly of WO.sub.3 and has a thermal expansion coefficient of 100 to 130.times.10.sup.-7 /.degree. C., and a magnetic head using the substrate material.Type: GrantFiled: March 15, 1990Date of Patent: June 8, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Mitsuo Satomi, Ken Hirota, Koichi Kugimiya
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Patent number: 5213702Abstract: Provided is a method for milling ceramic powder which comprises wet-milling at least one ceramic powder by a media agitating mill wherein the volume of liquid is 4 times or less the net-volume of the ceramic powder. A dispersing agent is added and milling is carried out using grinding media of 1 mm, or less, in diameter. Further, a media agitating mill used for the above method is provided which comprises a milling chamber, grinding media and an agitator wherein the peripheral speed of the agitator is 10 m/s or more, the grinding media have a diameter of 1 mm or less and packing fraction of the grinding media is 65-85 vol %. A method for making a sintered body from fine powder produced by the above milling method is also disclosed.Type: GrantFiled: September 14, 1992Date of Patent: May 25, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masamitsu Nishida, Hamae Ando, Koichi Kugimiya
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Patent number: 5183631Abstract: A composite material is provided which includes a discrete phase including grains made of a first substance; and a continuous phase including a thin coating film made of a second substance and formed on the surface of each of the grains. The thin coating film has a mean thickness smaller than the mean particle size of the grains. The grains are separated substantially from each other by the thin coating film. The porosity of the composite material is 5% or less.Type: GrantFiled: June 8, 1990Date of Patent: February 2, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Koichi Kugimiya, Yasuhiro Sugaya, Osamu Inoue, Mitsuo Satomi, Ken Hirota
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Patent number: 5164264Abstract: A substrate made of a composite material is provided which includes a discrete phase including grains made of a first substance; and a continuous phase including a thin coating film made of a second substance and formed on the surface of the grains. The thin coating film has a mean thickness smaller than the mean particle size of the grains. The grains are separated substantially from each other by the thin coating film. The porosity of the composite material is 5% or less.Type: GrantFiled: June 8, 1990Date of Patent: November 17, 1992Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Koichi Kugimiya, Ken Hirota, Mitsuo Satomi
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Patent number: 5128827Abstract: An improved electronic device having metal-glazing type end terminations comprising a surface metal phase of Sn or Zn, is produced by sintering a paste material containing a matrix metal powder (Cu and/or Ni), a fluxing metal powder and an organic binding material, so that the surface portion serves to improve wettability and solderability of the end termination owing to its composition being similar to solder.Type: GrantFiled: March 20, 1991Date of Patent: July 7, 1992Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoichiro Yokotani, Seiichi Nakatani, Koichi Kugimiya