Patents by Inventor Shunji Murai

Shunji Murai 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: 4858157
    Abstract: A coordinates measuring apparatus comprising a detecting unit constituted by an optical system for obtaining an image of an object and a detecting system having a plurality of arrayed detecting elements disposed in such a manner that respective detecting signals are superposed at the position of said image, a control unit for taking out data from each of said arrayed detecting elements, and a storage unit for storing the data of each array taken out from said control unit.
    Type: Grant
    Filed: March 11, 1986
    Date of Patent: August 15, 1989
    Assignee: Tokyo Kogaku Kikai Kabushiki Kaisha
    Inventors: Shunji Murai, Fumio Ohtomo, Hitoshi Ohtani
  • Patent number: 4834530
    Abstract: A shape measuring apparatus is disclosed.
    Type: Grant
    Filed: April 17, 1987
    Date of Patent: May 30, 1989
    Assignee: Tokyo Kogaku Kikai Kabushiki Kaisha
    Inventors: Shunji Murai, Fumio Othomo, Hitoshi Otani
  • Patent number: 4809131
    Abstract: 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: Grant
    Filed: April 29, 1988
    Date of Patent: February 28, 1989
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hirokazu Chazono, Minoru Oshio, Shunji Murai, Hiroshi Kishi
  • Patent number: 4809130
    Abstract: 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: Grant
    Filed: April 29, 1988
    Date of Patent: February 28, 1989
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hirokazu Chazono, Minoru Oshio, Shunji Murai, Hiroshi Kishi
  • Patent number: 4723193
    Abstract: 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: Grant
    Filed: December 22, 1986
    Date of Patent: February 2, 1988
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hirokazu Chazono, Hiroshi Kishi, Shunji Murai, Masami Fukui, Takeshi Wada
  • Patent number: 4709299
    Abstract: 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: Grant
    Filed: November 25, 1986
    Date of Patent: November 24, 1987
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hiroshi Kishi, Minoru Oshio, Shunji Murai, Takeshi Wada, Masami Fukui
  • Patent number: 4700269
    Abstract: A temperature compensating capacitor of monolithic, 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 .multidot.(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 0.3 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: Grant
    Filed: November 25, 1986
    Date of Patent: October 13, 1987
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hiroshi Kishi, Minoru Oshio, Shunji Murai, Takeshi Wada, Masami Fukui
  • Patent number: 4700268
    Abstract: 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 ingredent 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 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: Grant
    Filed: December 22, 1986
    Date of Patent: October 13, 1987
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hirokazu Chazono, Hiroshi Kishi, Shunji Murai, Masami Fukui, Takeshi Wada
  • Patent number: 4700266
    Abstract: 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: Grant
    Filed: December 22, 1986
    Date of Patent: October 13, 1987
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hirokazu Chazono, Hiroshi Kishi, Shunji Murai, Masami Fukui, Takeshi Wada
  • Patent number: 4700267
    Abstract: 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: Grant
    Filed: December 22, 1986
    Date of Patent: October 13, 1987
    Assignee: Taiyo Yuden Co., Ltd.,
    Inventors: Hirokazu Chazono, Hiroshi Kishi, Shunji Murai, Masami Fukui, Takeshi Wada
  • Patent number: 4700264
    Abstract: 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 .multidot.(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 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: Grant
    Filed: November 25, 1986
    Date of Patent: October 13, 1987
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hiroshi Kishi, Minoru Oshio, Shunji Murai, Takeshi Wada, Masami Fukui
  • Patent number: 4700265
    Abstract: 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: Grant
    Filed: November 25, 1986
    Date of Patent: October 13, 1987
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hiroshi Kishi, Minoru Oshio, Shunji Murai, Takeshi Wada, Masami Fukui
  • Patent number: 4607315
    Abstract: A monolithic ceramic capacitor having a higher DC breakdown voltage per unit thickness of the dielectric ceramic body than heretofore. The major ingredient of the ceramic is expressed as {(Ba.sub.1-x-y Ca.sub.x Sr.sub.y)O}.sub.k (Ti.sub.1-z Zr.sub.z)O.sub.2, where x, y, z and k are numerals in the ranges specified herein. To this major ingredient is added a minor proportion of a mixture of boric oxide and silicon dioxide in specified ranges of proportions. For the fabrication of capacitors having dielectric bodies of the above composition, the moldings of the mixture of the major ingredient and additives in the specified proportions are sintered to maturity in a reductive or neutral atmosphere and then reheated at a lower temperature in an oxidative atmosphere. The sintering temperature can be so low (1000.degree.-1200.degree. C.) that the moldings can be cosintered with base metal electrodes buried therein.
    Type: Grant
    Filed: December 4, 1985
    Date of Patent: August 19, 1986
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Takeshi Wada, Hiroshi Kishi, Shunji Murai, Masami Fukui
  • Patent number: 4607314
    Abstract: A monolithic ceramic capacitor having a higher DC breakdown voltage per unit thickness of the dielectric ceramic body than heretofore. The major ingredient of the ceramic is expressed as {(Ba.sub.1-x-y Ca.sub.x Sr.sub.y)O}.sub.k (Ti.sub.1-z Zr.sub.z)O.sub.2, where x, y, z and k are numerals in the ranges specified herein. 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 BaO, SrO and CaO, in specified ranges of proportions. For the fabrication of capacitors having dielectric bodies of the above composition, the moldings of the mixture of the major ingredient and additives in the specified proportions are sintered to maturity in a reductive or neutral atmosphere and then reheated at a lower temperature in an oxidative atmosphere. The sintering temperature can be so low (1000.degree.-1200.degree. C.) that the moldings can be cosintered with base metal electrodes buried therein.
    Type: Grant
    Filed: December 4, 1985
    Date of Patent: August 19, 1986
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Takeshi Wada, Hiroshi Kishi, Shunji Murai, Masami Fukui
  • Patent number: 4607316
    Abstract: A monolithic ceramic capacitor having a higher DC breakdown voltage per unit thickness of the dielectric ceramic body than heretofore. The major ingredient of the ceramic is expressed as {(Ba.sub.1-x-y Ca.sub.x Sr.sub.y)O}.sub.k (Ti.sub.1-z Zr.sub.z)O.sub.2, where x, y, z and k are numerals in the ranges specified herein. To this major ingredient is added a minor proportion of a mixture of boric oxide, silicon dioxide, and lithium oxide. The relative proportions of these additives are also specified. For the fabrication of capacitors having dielectric bodies of the above composition, the moldings of the mixture of the major ingredient and additives in the specified proportions are sintered to maturity in a reductive or neutral atmosphere and then reheated at a lower temperature in an oxidative atmosphere. The sintering temperature can be so low (1000.degree.-1200.degree. C.) that the moldings can be cosintered with base metal electrodes buried therein.
    Type: Grant
    Filed: December 4, 1985
    Date of Patent: August 19, 1986
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Takeshi Wada, Hiroshi Kishi, Shunji Murai, Masami Fukui