Patents by Inventor Tooru Murakami
Tooru Murakami 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: 11940523Abstract: An electronic device includes a transmission antenna that transmits a transmission wave, a reception antenna that receives a reflected wave that is the reflected transmission wave, and a control unit that detects an object that reflects the transmission wave, based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave. The electronic device transmits, to an information processing apparatus, sensing information based on the transmission signal and the reception signal at a location of the electronic device along with location information of the electronic device.Type: GrantFiled: April 1, 2020Date of Patent: March 26, 2024Assignee: KYOCERA CorporationInventors: Masamitsu Nishikido, Tooru Sahara, Youhei Murakami, Satoshi Kawaji, Masayuki Sato, Takuya Homma
-
Patent number: 9115250Abstract: In a first step, a diamine is reacted with a molar excess of a tetracarboxylic dianhydride in a solvent containing more than ? mole of water per mole of the tetracarboxylic dianhydride, whereby preparing a polyamic acid solution. Subsequently, in a second step, a diamine and/or a tetracarboxylic dianhydride are added to the polyamic acid solution obtained in the first step so that the molar amount of the diamine component is substantially equal to the molar amount of the tetracarboxylic acid component, and then the diamine and the tetracarboxylic dianhydride are reacted, whereby preparing a polyamic acid solution. By this process, a polyamic acid solution having a high concentration and a low viscosity may be reproducibly and reliably produced, while controlling the molecular weight of the polyamic acid to a predetermined low level.Type: GrantFiled: November 12, 2007Date of Patent: August 25, 2015Assignee: UBE Industries, Ltd.Inventors: Tooru Murakami, Seiichirou Takabayashi
-
Patent number: 8906463Abstract: Disclosed is a method for producing a polyimide film, wherein a polyamic acid solution composition is coated on a base material and the resultant coating film is processed by heat treatment; the polyamic acid solution composition is obtained by introducing a specific chemical structure into a polyamic acid at a ratio within a specific range; and the polyamic acid has a chemical structure composed of a 3,3?,4,4?-biphenyltetracarboxylic acid component and/or a pyromellitic acid component, and a paraphenylenediamine component. Also disclosed is the polyamic acid solution composition.Type: GrantFiled: May 18, 2007Date of Patent: December 9, 2014Assignee: Ube Industries, Ltd.Inventors: Seiichirou Takabayashi, Tooru Murakami
-
Patent number: 8816017Abstract: Disclosed is a process for producing a polyamic acid solution by reacting a diamine component consisting essentially of 20 mol % to 80 mol % of p-phenylenediamine and 80 mol % to 20 mol % of diaminodiphenyl ether with a tetracarboxylic acid component consisting essentially of 10 mol % to 60 mol % of 2,3,3?,4?-biphenyltetracarboxylic dianhydride and 90 mol % to 40 mol % of 3,3?,4,4?-biphenyltetracarboxylic dianhydride in a solvent, comprising: a first step in which a diamine component is reacted with a molar excess of a tetracarboxylic acid component in a solvent containing more than ? mole of water per mole of the tetracarboxylic acid component, whereby preparing a polyamic acid solution; and a second step in which a diamine component, or a diamine component and a tetracarboxylic acid component are added to the polyamic acid solution obtained in the first step so that the molar amount of the diamine component is substantially equal to the molar amount of the tetracarboxylic acid component, and then the diaType: GrantFiled: December 1, 2008Date of Patent: August 26, 2014Assignee: UBE Industries, Ltd.Inventors: Takeshige Nakayama, Seiichirou Takabayashi, Tooru Murakami
-
Patent number: 8735467Abstract: A process for producing a pigment-containing curable resin solution composition which comprises a pigment and a modified polysiloxane is disclosed. The process comprises the steps of: (a) preparing a pigment-dispersed liquid, wherein a pigment is dispersed in an organic solvent in the presence of a first modified polysiloxane; and (b) mixing the pigment-dispersed liquid with a resin solution which comprises at least a second modified polysiloxane. This process provides a pigment-containing curable resin solution composition with excellent dispersion stability of pigment.Type: GrantFiled: June 26, 2009Date of Patent: May 27, 2014Assignee: Ube Industries, Ltd.Inventors: Tooru Murakami, Koji Hayashi, Seiichirou Takabayashi, Nobuhiro Shigetomi
-
Publication number: 20100305295Abstract: Disclosed is a process for producing a polyamic acid solution by reacting a diamine component consisting essentially of 20 mol % to 80 mol % of p-phenylenediamine and 80 mol % to 20 mol % of diaminodiphenyl ether with a tetracarboxylic acid component consisting essentially of 10 mol % to 60 mol % of 2,3,3?,4?-biphenyltetracarboxylic dianhydride and 90 mol % to 40 mol % of 3,3?,4,4?-biphenyltetracarboxylic dianhydride in a solvent, comprising: a first step in which a diamine component is reacted with a molar excess of a tetracarboxylic acid component in a solvent containing more than ? mole of water per mole of the tetracarboxylic acid component, whereby preparing a polyamic acid solution; and a second step in which a diamine component, or a diamine component and a tetracarboxylic acid component are added to the polyamic acid solution obtained in the first step so that the molar amount of the diamine component is substantially equal to the molar amount of the tetracarboxylic acid component, and then the diaminType: ApplicationFiled: December 1, 2008Publication date: December 2, 2010Applicant: UBE INDUSTRIES, LTD.Inventors: Takeshige Nakayama, Seiichirou Takabayashi, Tooru Murakami
-
Publication number: 20100291377Abstract: Disclosed is a method for producing a polyimide film, wherein a polyamic acid solution composition is coated on a base material and the resultant coating film is processed by heat treatment; the polyamic acid solution composition is obtained by introducing a specific chemical structure into a polyamic acid at a ratio within a specific range; and the polyamic acid has a chemical structure composed of a 3,3?,4,4?-biphenyltetracarboxylic acid component and/or a pyromellitic acid component, and a paraphenylenediamine component. Also disclosed is the polyamic acid solution composition.Type: ApplicationFiled: May 18, 2007Publication date: November 18, 2010Inventors: Seiichirou Takabayashi, Tooru Murakami
-
Publication number: 20100207293Abstract: A process of producing a polyimide film including applying a polyamic acid solution composition to a substrate to form a coating layer and heating the coating layer, wherein the polyamic acid solution composition contains a mixed solvent system of at least two solvents selected from N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, and 1,3-dimethyl-2-imidazolidinone, each solvent being present in a proportion ranging from 7% to 93% based on the total mixed solvent system, and a polyamic acid composed mainly of s-BPDA and PPD. The process enables a film with a thickness exceeding 40 ?m to be formed without involving bubble formation.Type: ApplicationFiled: September 22, 2008Publication date: August 19, 2010Applicant: UBE INDUSTRIES, LTD.Inventors: Takeshige Nakayama, Seiichirou Takabayashi, Tooru Murakami
-
Publication number: 20100130628Abstract: Disclosed is an aromatic polyimide having extremely high stiffness and extremely high gas barrier property, which is prepared from a tetracarboxylic acid component consisting essentially of 25 mol % to 97 mol % of 3,3?,4,4?-biphenyltetracarboxylic acid and 75 mol % to 3 mol % of 4,4?-oxydiphthalic acid based on 100 mol % of the total amount of the tetracarboxylic acid component, and a diamine component consisting essentially of p-phenylenediamine.Type: ApplicationFiled: March 31, 2008Publication date: May 27, 2010Applicant: UBE INDUSTRIES, LTD.Inventors: Hiroaki Yamaguchi, Seiichirou Takabayashi, Tooru Murakami, Takeshige Nakayama
-
Publication number: 20100056718Abstract: In a first step, a diamine is reacted with a molar excess of a tetracarboxylic dianhydride in a solvent containing more than ? mole of water per mole of the tetracarboxylic dianhydride, whereby preparing a polyamic acid solution. Subsequently, in a second step, a diamine and/or a tetracarboxylic dianhydride are added to the polyamic acid solution obtained in the first step so that the molar amount of the diamine component is substantially equal to the molar amount of the tetracarboxylic acid component, and then the diamine and the tetracarboxylic dianhydride are reacted, whereby preparing a polyamic acid solution. By this process, a polyamic acid solution having a high concentration and a low viscosity may be reproducibly and reliably produced, while controlling the molecular weight of the polyamic acid to a predetermined low level.Type: ApplicationFiled: November 12, 2007Publication date: March 4, 2010Applicant: UBE INDUSTRIES, LTD.Inventors: Tooru Murakami, Seiichirou Takabayashi
-
Publication number: 20090326106Abstract: A process for producing a pigment-containing curable resin solution composition which comprises a pigment and a modified polysiloxane is disclosed. The process comprises the steps of: (a) preparing a pigment-dispersed liquid, wherein a pigment is dispersed in an organic solvent in the presence of a first modified polysiloxane; and (b) mixing the pigment-dispersed liquid with a resin solution which comprises at least a second modified polysiloxane. This process provides a pigment-containing curable resin solution composition with excellent dispersion stability of pigment.Type: ApplicationFiled: June 26, 2009Publication date: December 31, 2009Applicant: UBE INDUSTRIES, LTDInventors: Tooru MURAKAMI, Koji HAYASHI, Seiichirou TAKABAYASHI, Nobuhiro SHIGETOMI
-
Patent number: 6794031Abstract: A cover-lay film comprising a heat-resistant film and an adhesive layer, wherein the adhesive layer is formed of an epoxy resin composition containing (a) an epoxy resin, (b) a curing agent, (c) a phenolic hydroxyl-containing polyamide-poly(butadiene-acrylonitrile) copolymer, and (d) an ion capturing agent and having a glass transition temperature of 80° C. or higher after cure, and the heat-resistant film mainly comprises a polyimide containing a 3,3′,4,4′-biphenyltetracarboxylic acid component and a p-phenylenediamine component and has a specific coefficient of linear thermal expansion and a specific tensile modulus in both machine and transverse directions.Type: GrantFiled: September 24, 2002Date of Patent: September 21, 2004Assignees: Ube Industries, Ltd., Nippon Kayaku Co., Ltd.Inventors: Tooru Murakami, Toyofumi Asano, Masahiro Imaizumi
-
Publication number: 20030091842Abstract: A cover-lay film comprising a heat-resistant film and an adhesive layer, wherein the adhesive layer is formed of an epoxy resin composition containing (a) an epoxy resin, (b) a curing agent, (c) a phenolic hydroxyl-containing polyamide-poly(butadiene-acrylonitrile) copolymer, and (d) an ion capturing agent and having a glass transition temperature of 80° C. or higher after cure, and the heat-resistant film mainly comprises a polyimide containing a 3,3′,4,4′-biphenyltetracarboxylic acid component and a p-phenylenediamine component and has a specific coefficient of linear thermal expansion and a specific tensile modulus in both machine and transverse directions.Type: ApplicationFiled: September 24, 2002Publication date: May 15, 2003Applicant: UBE INDUSTRIES, LTD.Inventors: Tooru Murakami, Toyofumi Asano, Masahiro Imaizumi
-
Patent number: 5803957Abstract: To an electroless gold plating bath comprising a water-soluble gold compound, a complexing agent, and a reducing agent is added a small amount of polyvinyl pyrrodidone. The bath allows a satisfactory gold plating film to be formed on metal portions on a non-conductive substrate without plating spread.Type: GrantFiled: January 10, 1997Date of Patent: September 8, 1998Assignee: C. Uyemura & Co.,Ltd.Inventors: Tooru Murakami, Keizin Morimoto, Isamu Yanada, Masanobu Tsujimoto
-
Patent number: 5364460Abstract: To a neutral electroless gold plating bath comprising a gold sulfite, a sulfite, and a reducing agent, there are added an organic phosphonic acid or a salt thereof and an optional stabilizer in the form of a non-ionic surfactant or non-ionic polymer. A gold plating film having an aesthetic lemon yellow color tone and susceptible to bonding deposits on an article from the bath without attacking the base material of the article and without plating spread.Type: GrantFiled: March 25, 1994Date of Patent: November 15, 1994Assignee: C. Uyemura & Co., Ltd.Inventors: Keizin Morimoto, Masanobu Tsujimoto, Tomomi Yaji, Tooru Murakami
-
Patent number: 5185076Abstract: A bath for electrodepositing tin, lead or an alloy thereof, containing a tin and/or lead ion and a sulfate ion becomes stable at pH 1 or higher when a condensed phosphate ion is added thereto. The bath is effective for depositing tin-lead alloy films on sealing glass-metal integrated articles.Type: GrantFiled: April 12, 1991Date of Patent: February 9, 1993Assignee: C. Uyemura & Co., Ltd.Inventors: Isamu Yanada, Tooru Murakami, Kiyoshi Asakawa