Patents by Inventor Hiroshi Kishi
Hiroshi Kishi 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: 5103369Abstract: A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(1--.alpha.) {(Ba.sub.k-x-z M.sub.x L.sub.z)O.sub.k (Ti.sub.1-y R.sub.y)O.sub.2-(y/2) }+.alpha.CaZrO.sub.3where M is either or both of magnesium and zinc, L is either or both of calcium and magnesium, R is a rare earth element or elements, and .alpha., k, x, z and y are numerals in specified ranges. To this major ingredient is added a minor proportion of a first additive ingredient and a second additive ingredient. The first additive ingredient is at least either of chromium oxide and aluminum oxide. The second additive ingredient is a mixture of boric oxide or lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide.Type: GrantFiled: November 29, 1990Date of Patent: April 7, 1992Assignee: Taiyo Yuden Co., Ltd.Inventors: Hiroshi Saito, Mutsumi Honda, Hiroshi Kishi, Hisamitsu Shizuno, Hirokazu Chazono
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Patent number: 5089933Abstract: A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula(1-.alpha.){(Ba.sub.k-x M.sub.x)O.sub.k (Ti.sub.1-y R.sub.y)O.sub.2-(y/2) }+.alpha.CaZrO.sub.3where M is either or both of calcium and strontium, R is a rare earth element or elements, and .alpha., k, x and y are numerals in specified ranges. To this major ingredient is added a minor proportion of a first additive ingredient and a second additive ingredient. The first additive ingredient is at least either of chromium oxide and aluminum oxide. The second additive ingredient is a mixture of boric oxide or lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide.Type: GrantFiled: November 29, 1990Date of Patent: February 18, 1992Assignee: Taiyo Yuden Co., Ltd.Inventors: Hiroshi Saito, Mutsumi Honda, Hiroshi Kishi, Hisamitsu Shizuno, Hirokazu Chazono
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Patent number: 5089932Abstract: A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(1-.alpha.){(Ba.sub.k-x M.sub.x)O.sub.k (Ti.sub.1-y R.sub.y)O.sub.2-(y/2) }+.alpha.CaZrO.sub.3where M is either or both of magnesium and zinc, R is a rare earth element or elements, and .alpha., k, x and y are numerals in specified ranges. To this major ingredient is added a minor proportion of an additive. The additive is a mixture of boric oxide or lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein.Type: GrantFiled: November 27, 1990Date of Patent: February 18, 1992Assignee: Taiyo Yuden Co., Ltd.Inventors: Hiroshi Saito, Mutsumi Honda, Hiroshi Kishi, Hisamitsu Shizuno, Hirokazu Chazono
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Patent number: 5077636Abstract: A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(1-.alpha.){(Ba.sub.k-x-z M.sub.x L.sub.z)O.sub.k (Ti.sub.1-y R.sub.y)O.sub.2-(y/2) }+.alpha.CaZrO.sub.3where M is either or both of magnesium and zinc, L is either or both of calcium and magnesium, R is a rare earth element or elements, and .alpha., k, x, z and y are numerals in specified ranges. To this major ingredient is added a minor proportion of an additive ingredient. The additive ingredient is a mixture of boric oxide or lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein.Type: GrantFiled: November 27, 1990Date of Patent: December 31, 1991Assignee: Taiyo Yuden Co., Ltd.Inventors: Hiroshi Saito, Mutsumi Honda, Hiroshi Kishi, Hisamitsu Shizuno, Hirokazu Chazono
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Patent number: 5075819Abstract: A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(1-.alpha.) {(Ba.sub.k-x M.sub.x)O.sub.k (Ti.sub.1-y R.sub.y)O.sub.2-(y/2) }+.alpha.CaZrO.sub.3where M is either or both of calcium and strontium, R is a rare earth element or elements, and .alpha., k, x and y are numerals in specified ranges. To this major ingredient is added a minor proportion of an additive. The additive is a mixture of boric oxide or lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein.Type: GrantFiled: November 27, 1990Date of Patent: December 24, 1991Assignee: Taiyo Yuden Co., Ltd.Inventors: Hiroshi Saito, Mutsumi Honda, Hiroshi Kishi, Hisamitsu Shizuno, Hirokazu Chazono
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Patent number: 5051864Abstract: A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(Ba.sub.k-x M.sub.x)O.sub.k TiO.sub.2where M is either or both of calcium and strontium, and K and X are numerals in specified ranges. To this major ingredient is added a minor proportion of a first additive ingredient and a second additive ingredient. The first additive ingredient is at least either of dichromium trioxide and aluminum oxide. The second ingredient is a mixture of boric oxide or lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein.Type: GrantFiled: October 22, 1990Date of Patent: September 24, 1991Assignee: Taiyo Yuden Co., Ltd.Inventors: Hirokazu Chazono, Hiroshi Saito, Mutsumi Honda, Hisamitsu Shizuno, Hiroshi Kishi
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Patent number: 5051863Abstract: A monolithic capacitor having a dielectric ceramic body sintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula(Ba.sub.k-x M.sub.x)O.sub.k TiO.sub.2where M is either or both of magnesium and zinc, and K and X are numerals in specified ranges. To this major ingredient is added a minor proportion of a first additive ingredient and a second additive ingredient. The first additive ingredient is at least either of dichromium trioxide and aluminum oxide. The second ingredient is a mixture of boric oxide or lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein.Type: GrantFiled: October 22, 1990Date of Patent: September 24, 1991Assignee: Taiyo Yuden Co., Ltd.Inventors: Hirokazu Chazono, Hiroshi Saito, Mutsumi Honda, Hisamitsu Shizuno, Hiroshi Kishi
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Patent number: 5006954Abstract: A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(1-.alpha.){(Ba.sub.k-x M.sub.x)O.sub.k TiO.sub.2 }+.alpha.CaZrO.sub.3where M is either or both of magnesium and zinc, and .alpha., k and y are numerals in specified ranges. To this major ingredient is added a minor proportion of a mixture of lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 1200.degree. C. and then are reheated at a lower temperature in an oxidative atmosphere.Type: GrantFiled: February 21, 1990Date of Patent: April 9, 1991Assignee: Taiyo Yuden, Co., Ltd.Inventors: Hiroshi Kishi, Hirokazu Chazono, Minoru Oshio, Hiroshi Saito, Toshiya Nakamura, Hisamitsu Shizuno
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Patent number: 5006955Abstract: A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(1-.alpha.){(Ba.sub.k-x M.sub.x)O.sub.k TiO.sub.2 }+.alpha.CaZrO.sub.3where M is either or both of calcium and strontium, and .alpha., k and y are numerals in specified ranges. To this major ingredient is added a minor proportion of a mixture of lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredients and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 1200.degree. C. and then are reheated at a lower temperature in an oxidative atmosphere.Type: GrantFiled: February 21, 1990Date of Patent: April 9, 1991Assignee: Taiyo Yuden Co., Ltd.Inventors: Hiroshi Kishi, Hirokazu Chazono, Minoru Oshio, Hiroshi Saito, Toshiya Nakamura, Hisamitsu Shizuno
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Patent number: 4999736Abstract: A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(1-.alpha.)(Ba.sub.k-x-y L.sub.x M.sub.y)O.sub.k TiO.sub.2)+.alpha.CaZrO.sub.s,where L is either or both of magnesium and zinc, M is either or both of calcium and strontium, and .alpha., k, x and y are numerals in specified ranges. To this major ingredient is added a minor proportion of a mixture of lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 1200.degree. C.Type: GrantFiled: February 21, 1990Date of Patent: March 12, 1991Assignee: Taiyo Yden Co., Ltd.Inventors: Hiroshi Kishi, Hirokazu Chazono, Minoru Oshio, Hiroshi Saito, Toshiya Nakamura, Hisamitsu Shizuno
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Patent number: 4999739Abstract: A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(1-.alpha.){(Ba.sub.k-x M.sub.x)O.sub.k TiO.sub.2 }+.alpha.CaZrO.sub.3where M is either or both of magnesium and zinc, and .alpha., k and y are numerals in specified ranges. To this major ingredient is added a minor proportion of a mixture of boric oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 1200.degree. C. and then are reheated at a lower temperature in an oxidative atmosphere.Type: GrantFiled: February 21, 1990Date of Patent: March 12, 1991Assignee: Taiyo Yuden Co., Ltd.Inventors: Hiroshi Kishi, Hirokazu Chazono, Minoru Oshio, Hiroshi Saito, Toshiya Nakamura, Hisamitsu Shizuno
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Patent number: 4999738Abstract: A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(1-.alpha.){(Ba.sub.k-x M.sub.x)O.sub.k TiO.sub.2 }+.alpha.CaZrO.sub.3where M is either or both of calcium and strontium, and .alpha., k and y are numerals in specified ranges. To this major ingredient is added a minor proportion of a mixture of boric oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 1200.degree. C. and then are reheated at a lower temperature in an oxidative atmosphere.Type: GrantFiled: February 21, 1990Date of Patent: March 12, 1991Assignee: Taiyo Yuden Co., Ltd.Inventors: Hiroshi Kishi, Hirokazu Chazono, Minoru Oshio, Hiroshi Saito, Toshiya Nakamura, Hisamitsu Shizuno
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Patent number: 4999737Abstract: A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(1-.alpha.){(Ba.sub.k-x-y L.sub.x M.sub.y)O.sub.k TiO.sub.2 }+.alpha.CaZrO.sub.3,where L is either or both of magnesium and zinc, M is either or both of calcium and strontium, and .alpha., k, x and y are numerals in specified ranges. To this major ingredient is added a minor proportion of a mixture of boric oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 1200.degree. C.Type: GrantFiled: February 21, 1990Date of Patent: March 12, 1991Assignee: Taiyo Yuden Co., Ltd.Inventors: Hiroshi Kishi, Hirokazu Chazono, Minoru Oshio, Hiroshi Saito, Toshiya Nakamura, Hisamitsu Shizuno
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Patent number: 4809131Abstract: A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes buried therein. The ceramic body is composed of a major ingredient expressed by the formula,(Ba.sub.1-v-w Me.sub.v Mg.sub.w O).sub.k (Zr.sub.1-x-y Ti.sub.x Si.sub.y)O.sub.2where Me is either or both of strontium and calcium, and v, w, x, y and k are numerals in specified ranges. To this major ingredient is added a minor proportion of a mixture of boric oxide, silicon dioxide, and one or more metal oxides selected from among barium oxide, magnesium oxide, zinc oxide, strontium oxide and calcium oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 1200.degree. C.Type: GrantFiled: April 29, 1988Date of Patent: February 28, 1989Assignee: Taiyo Yuden Co., Ltd.Inventors: Hirokazu Chazono, Minoru Oshio, Shunji Murai, Hiroshi Kishi
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Patent number: 4809130Abstract: A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes buried therein. The ceramic body is composed of a major ingredient expressed by the formula,(Ba.sub.1-v-w Me.sub.v Mg.sub.w O).sub.k (Zr.sub.1-x-y Ti.sub.x Si.sub.y)O.sub.2where Me is either or both of strontium and calcium, and v, w, x, y and k are numerals in specified ranges. To this major ingredient is added a minor proportion of a mixture of lithium oxide, silicon dioxide, and one or more metal oxides selected from among barium oxide, magnesium oxide, zinc oxide, strontium oxide and calcium oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 120.degree. C.Type: GrantFiled: April 29, 1988Date of Patent: February 28, 1989Assignee: Taiyo Yuden Co., Ltd.Inventors: Hirokazu Chazono, Minoru Oshio, Shunji Murai, Hiroshi Kishi
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Patent number: 4723193Abstract: A temperature compensating capacitor of monolithic or multilayered configuration comprising a dielectric ceramic body and at least two electrodes buried therein. The ceramic body is composed of a major ingredient expressed by the formula, {(Sr.sub.1-x-y Ca.sub.x M.sub.y)O}.sub.k (Ti.sub.1-z Zr.sub.z)O.sub.2, where M is at least either of magnesium and zinc, and where x, y, k and z are numerals in the ranges of zero to 0.995 inclusive, 0.005 to 0.100 inclusive, 1.00 to 1.04 inclusive, and 0.005 to 0.100 inclusive, respectively. To this major ingredient is added a minor proportion of a mixture of boric oxide, silicon dioxide, and one or more metal oxides selected from among barium oxide, magnesium oxide, zinc oxide, strontium oxide and calcium oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein.Type: GrantFiled: December 22, 1986Date of Patent: February 2, 1988Assignee: Taiyo Yuden Co., Ltd.Inventors: Hirokazu Chazono, Hiroshi Kishi, Shunji Murai, Masami Fukui, Takeshi Wada
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Patent number: 4709299Abstract: A temperature compensating capacitor of monolithic or multilayered configuration comprising a dielectric ceramic body and at least two electrodes buried therein. The ceramic body is composed of a major ingredient expressed by the formula, (CaO).sub.k.(Zr.sub.1-x Ti.sub.x)O, where k and x are numerals in the ranges of 0.8 to 1.3 inclusive and of zero to 0.3 inclusive, respectively. To this major ingredient is added a minor proportion of a mixture of boric oxide, silicon dioxide, and one or more metal oxides selected from among barium oxide, magnesium oxide, zinc oxide, strontium oxide and calcium oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere and then are reheated at a lower temperature in an oxidative atmosphere.Type: GrantFiled: November 25, 1986Date of Patent: November 24, 1987Assignee: Taiyo Yuden Co., Ltd.Inventors: Hiroshi Kishi, Minoru Oshio, Shunji Murai, Takeshi Wada, Masami Fukui
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Patent number: 4700266Abstract: A temperature compensating capacitor of monolithic or multilayered configuration comprising a dielectric ceramic body and at least two electrodes buried therein. The ceramic body is composed of a major ingredient expressed by the formula, {(Sr.sub.1-x Ca.sub.x)O}.sub.k (Ti.sub.1-y Zr.sub.y)O.sub.2, where x, k and y are numerals in the ranges of 0.005 to 0.995 inclusive, 1.00 to 1.04 inclusive, and 0.005 to 0.100 inclusive, respectively. To this major ingredient is added a minor proportion of a mixture of lithium oxide, silicon dioxide, and one or more metal oxides selected from among barium oxide, magnesium oxide, zinc oxide, strontium oxide and calcium oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein.Type: GrantFiled: December 22, 1986Date of Patent: October 13, 1987Assignee: Taiyo Yuden Co., Ltd.Inventors: Hirokazu Chazono, Hiroshi Kishi, Shunji Murai, Masami Fukui, Takeshi Wada
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Patent number: 4700265Abstract: A temperature compensating capacitor of monolithic or multilayered configuration comprising a dielectric ceramic body and at least two electrodes buried therein. The ceramic body is composed of a major ingredient expressed by the formula, (SrO).sub.k.(Zr.sub.1-x Ti.sub.x)O.sub.2, where k and x are numerals in the ranges of 0.8 to 1.3 inclusive and of zero to 0.25 inclusive, respectively. To this major ingredient is added a minor proportion of a mixture of lithium oxide, silicon dioxide, and one or more metal oxides selected from among barium oxide, magnesium oxide, zinc oxide, strontium oxide and calcium oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere and then are reheated at a lower temperature in an oxidative atmosphere.Type: GrantFiled: November 25, 1986Date of Patent: October 13, 1987Assignee: Taiyo Yuden Co., Ltd.Inventors: Hiroshi Kishi, Minoru Oshio, Shunji Murai, Takeshi Wada, Masami Fukui
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Patent number: 4700267Abstract: A temperature compensating capacitor of monolithic or multilayered configuration comprising a dielectric ceramic body and at least two electrodes buried therein. The ceramic body is composed of a major ingredient expressed by the formula, {(Sr.sub.1-x-y Ca.sub.x M.sub.y)O}.sub.k (Ti.sub.1-z Zr.sub.z)O.sub.2, where M is at least either of magnesium and zinc, and where x, y, k and z are numerals in the ranges of zero to 0.995 inclusive, 0.005 to 0.100 inclusive, 1.00 to 1.04 inclusive, and 0.005 to 0.100 inclusive, respectively. To this major ingredient is added a minor proportion of a mixture of lithium oxide, silicon dioxide, and one or more metal oxides selected from among barium oxide, magnesium oxide, zinc oxide, strontium oxide and calcium oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein.Type: GrantFiled: December 22, 1986Date of Patent: October 13, 1987Assignee: Taiyo Yuden Co., Ltd.,Inventors: Hirokazu Chazono, Hiroshi Kishi, Shunji Murai, Masami Fukui, Takeshi Wada