Patents by Inventor Akiko Nagai
Akiko Nagai 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: 11986909Abstract: The present invention uses a flux containing a rosin, a solvent, a thixo agent, and an activator. The thixo agent contains a polyamide and a compound represented by general formula (1). The polyamide is a condensate between an amine and at least one selected from aliphatic carboxylic acids and hydroxy group-containing aliphatic carboxylic acids, and has an endothermic peak at a temperature of 120-200° C. In the general formula, R11 represents a hydrocarbon group having 11-30 carbon atoms. R0a represents a hydrogen atom or a hydrocarbon group having 12-31 carbon atoms. R0b represents an n-valent hydrocarbon group having 4-12 carbon atoms. R21 represents an alkylene group having 2-6 carbon atoms. R0c represents a single bond or an alkylene group having 2-6 carbon atoms. n represents 1 or 2. When n represents 1, m represents an integer of 1-3. When n represents 2, m represents 1.Type: GrantFiled: November 17, 2021Date of Patent: May 21, 2024Assignee: SENJU METAL INDUSTRY CO., LTD.Inventors: Kenta Inoue, Nanako Miyagi, Tomoko Nagai, Kazuyori Takagi, Akiko Takaki
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Patent number: 11986910Abstract: The present invention employs a flux which contains rosin, a solvent, a thixotropic agent and an activator. The thixotropic agent contains a polyamide (PA2). The PA2 is a condensation product of an aliphatic carboxylic acid, a hydroxy group-containing aliphatic carboxylic acid and an aliphatic amine having from 3 to 10 carbon atoms; and the aliphatic carboxylic acid includes an aliphatic dicarboxylic acid having from 11 to 20 carbon atoms. With respect to the endothermic amount calculated from the peak area of the differential scanning calorimetry curve of PA2 as obtained by differential scanning calorimetry measurement, the ratio of the endothermic amount within the range of from 50° C. to 190° C. to the total endothermic amount within the range of from 50° C. to 200° C. is 90% or more.Type: GrantFiled: November 17, 2021Date of Patent: May 21, 2024Assignee: SENJU METAL INDUSTRY CO., LTD.Inventors: Kenta Inoue, Nanako Miyagi, Tomoko Nagai, Kazuyori Takagi, Akiko Takaki
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Patent number: 11131896Abstract: A light control sheet including a first transparent electrode, a second transparent electrode, a first light control layer positioned between the first and second transparent electrodes, and having light transmission property which is variable by a change in a voltage across the first and second transparent electrodes, and a voltage control unit which applies an AC voltage across the first and second transparent electrodes, and changes a frequency of the AC voltage applied.Type: GrantFiled: March 29, 2019Date of Patent: September 28, 2021Assignee: TOPPAN PRINTING CO., LTD.Inventors: Yasushi Hayashida, Akiko Nagai, Koichi Makidai
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Patent number: 10921656Abstract: A light control module including a light control sheet and a drive circuit that applies a voltage to a first electrode and a second electrode of the light control sheet. The light control sheet includes a light control layer switchable between a transparent state and an opaque state according to an applied voltage. The light control sheet has a feeding area for applying a voltage to the first and second electrodes. The light control sheet is formed such that when the light control sheet receives a voltage that causes a transmittance of the light control sheet to be equivalent to a Munsell value of 90% in a region closest to the feeding area, the light control sheet has a transmittance equivalent to a Munsell value of 50% in a region farthest from the feeding area, where a Munsell value of 100% is a maximum transmittance of the light control sheet.Type: GrantFiled: October 5, 2018Date of Patent: February 16, 2021Assignee: TOPPAN PRINTING CO., LTD.Inventors: Tetsushi Yoshida, Koichi Makidai, Akiko Nagai
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Publication number: 20190227354Abstract: A light control sheet including a first transparent electrode, a second transparent electrode, a first light control layer positioned between the first and second transparent electrodes, and having light transmission property which is variable by a change in a voltage across the first and second transparent electrodes, and a voltage control unit which applies an AC voltage across the first and second transparent electrodes, and changes a frequency of the AC voltage applied.Type: ApplicationFiled: March 29, 2019Publication date: July 25, 2019Applicant: TOPPAN PRINTING CO., LTD.Inventors: Yasushi HAYASHIDA, Akiko NAGAI, Koichi MAKIDAI
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Publication number: 20190041680Abstract: A light control module including a light control sheet and a drive circuit that applies a voltage to a first electrode and a second electrode of the light control sheet. The light control sheet includes a light control layer switchable between a transparent state and an opaque state according to an applied voltage. The light control sheet has a feeding area for applying a voltage to the first and second electrodes. The light control sheet is formed such that when the light control sheet receives a voltage that causes a transmittance of the light control sheet to be equivalent to a Munsell value of 90% in a region closest to the feeding area, the light control sheet has a transmittance equivalent to a Munsell value of 50% in a region farthest from the feeding area, where a Munsell value of 100% is a maximum transmittance of the light control sheet.Type: ApplicationFiled: October 5, 2018Publication date: February 7, 2019Applicant: TOPPAN PRINTING CO., LTD.Inventors: Tetsushi YOSHIDA, Koichi MAKIDAI, Akiko NAGAI
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Publication number: 20130001086Abstract: Disclosed is a crystalline metal oxide having a positive charge-induced region and a negative charge-induced region, which has a surface which has protrusions and recesses or a porous surface. The metal which configures the metal oxide is preferably an elemental metal or an elemental metal-containing alloy such as titanium, zirconium, titanium alloy, zirconium alloy or cobalt chromium alloy. The metal oxide is preferably one obtained by an anodic oxidation treatment of the metal which configures the metal oxide and the metal oxide can be suitably used as a biocompatible material or a member constituting a biocompatible material.Type: ApplicationFiled: January 27, 2011Publication date: January 3, 2013Inventors: Kimihiro Yamashita, Akiko Nagai, Chufan Ma
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Patent number: 6407024Abstract: A dielectric composition containing at least calcium titanate, strontium titanate, and barium titanate, wherein at least the molar ratios of composition of the three are such that the molar ratio of composition (P) of calcium titanate is 0.5 to 0.85, the molar ratio of composition (Q) of strontium titanate is 0.05 to 0.4, and the molar ratio of composition (R) of barium titanate is 0.1 to 0.2 (where, P+Q+R=1).Type: GrantFiled: October 5, 2001Date of Patent: June 18, 2002Assignee: TDK CorporationInventors: Shigeki Satoh, Yoshinori Fujikawa, Akiko Nagai, Kaori Masumiya
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Publication number: 20020045533Abstract: A dielectric composition containing at least calcium titanate, strontium titanate, and barium titanate, wherein at least the molar ratios of composition of the three are such that the molar ratio of composition (P) of calcium titanate is 0.5 to 0.85, the molar ratio of composition (Q) of strontium titanate is 0.05 to 0.4, and the molar ratio of composition (R) of barium titanate is 0.1 to 0.2 (where, P+Q+R=1).Type: ApplicationFiled: October 5, 2001Publication date: April 18, 2002Applicant: TDK CORPORATIONInventors: Shigeki Satoh, Yoshinori Fujikawa, Akiko Nagai, Kaori Masumiya
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Patent number: 6335302Abstract: A dielectric composition containing at least calcium titanate, strontium titanate, and barium titanate, wherein at least the molar ratios of composition of the three are such that the molar ratio of composition (P) of calcium titanate is 0.5 to 0.85, the molar ratio of composition (Q) of strontium titanate is 0.05 to 0.4, and the molar ratio of composition (R) of barium titanate is 0.1 to 0.2 (where, P+Q+R=1).Type: GrantFiled: January 12, 2000Date of Patent: January 1, 2002Assignee: TDK CorporationInventors: Shigeki Satoh, Yoshinori Fujikawa, Akiko Nagai, Kaori Masumiya