Patents by Inventor Yuichi Koyama
Yuichi Koyama 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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Publication number: 20160108254Abstract: Invention provides a zinc immersion coating solution used in the double-zincate method for applying first and second zinc immersion coating treatments to aluminum or aluminum alloy. Zinc immersion coating solution used for first zinc immersion coating treatment at least contains a zinc compound, alkali hydroxide, iron salt, chelating agent for complexation of iron ions, and zinc immersion coating inhibitor that is at least one out of the group consisting of a polymer of a secondary amine, polymer of a tertiary amine, and polymer of a quaternary amine, or copolymer containing the same, and zinc immersion coating solution used for second zinc immersion coating treatment at least contains a zinc compound, alkali hydroxide, iron salt, chelating agent for complexation of iron ions, and zinc immersion coating inhibitor that is at least one out of the group consisting of a primary and secondary amines, and a tertiary amine.Type: ApplicationFiled: October 17, 2014Publication date: April 21, 2016Inventors: Yuichi KOYAMA, Tatsuya GODA, Mariko HAYASHI
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Patent number: 7993506Abstract: There is provided a gas sensor, including a gas sensing film formed of an oxide semiconductor material and a gas-permeable protection layer formed of oxide particles and arranged on the gas sensing film. The oxide particles of the protection layer have an average particle size of 500 nm or smaller.Type: GrantFiled: January 16, 2008Date of Patent: August 9, 2011Assignee: NGK Spark Plug Co., Ltd.Inventors: Yoshihiro Nakano, Shinichi Nakagawa, Yuichi Koyama, Takio Kojima
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Publication number: 20100308894Abstract: A medical electronic apparatus includes an operation unit corresponding to a certain operation; a non-contact temperature sensor sensing, in a non-contact manner, an entry of an object, with a temperature in a particular temperature range, at a predetermined distance from the operation unit; and a control unit controlling execution of an operation corresponding to the operation unit based on a signal output when the non-contact temperature sensor senses the object with a temperature in the particular temperature range.Type: ApplicationFiled: May 12, 2010Publication date: December 9, 2010Applicant: Sony CorporationInventor: Yuichi Koyama
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Publication number: 20080257732Abstract: There is provided a gas sensor, including a gas sensing film formed of an oxide semiconductor material and a gas-permeable protection layer formed of oxide particles and arranged on the gas sensing film. The oxide particles of the protection layer have an average particle size of 500 nm or smaller.Type: ApplicationFiled: January 16, 2008Publication date: October 23, 2008Applicant: NGK SPARK PLUG CO., LTD.Inventors: Yoshihiro NAKANO, Shinichi Nakagawa, Yuichi Koyama, Takio Kojima
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Patent number: 7189363Abstract: Of a gas detector 100, a chamber 105 formed between a center cover 150 and a cover 160 is a part of an air flow channel AF. A first shielding plate 165 is provided in the chamber 105. Water droplets that have entered the chamber from a chamber entrance 103 with air hit and adhere to an entrance-opposed surface 165E of the first shielding plate 165. The water thus adhering to the surface is pushed by the air flowing along the entrance-opposed surface 165E and by gravity, to thereby advance downward. The water then drips downward and is accumulated on a bottom wall surface 105WD which serves as an upper surface of a bottom wall section 161WD. The water is pushed by the flow of air, to thereby advance toward a chamber exit 104. The water is then drained downward from the chamber exit 104.Type: GrantFiled: May 23, 2003Date of Patent: March 13, 2007Assignee: NGK Spark Plug Co., Ltd.Inventors: Norimasa Osawa, Kazuto Hirai, Yuichi Koyama
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Publication number: 20030235516Abstract: Of a gas detector 100, a chamber 105 formed between a center cover 150 and a cover 160 is a part of an air flow channel AF. A first shielding plate 165 is provided in the chamber 105. Water droplets that have entered the chamber from a chamber entrance 103 with air hit and adhere to an entrance-opposed surface 165E of the first shielding plate 165. The water thus adhering to the surface is pushed by the air flowing along the entrance-opposed surface 165E and by gravity, to thereby advance downward. The water then drips downward and is accumulated on a bottom wall surface 105WD which serves as an upper surface of a bottom wall section 161WD. The water is pushed by the flow of air, to thereby advance toward a chamber exit 104. The water is then drained downward from the chamber exit 104.Type: ApplicationFiled: May 23, 2003Publication date: December 25, 2003Applicant: NGK Spark Plug Co., Ltd.Inventors: Norimasa Osawa, Kazuto Hirai, Yuichi Koyama
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Patent number: 5119010Abstract: A power supply device for use on a motor vehicle includes a charging power supply such as an alternator or a battery, a plurality of capacitors, chargeable by the charging power supply, for supplying stored electric energy to an electric load such as an engine starter, and a successive charging control circuit arrangement for successively charging the capacitors, one by one, with the charging power supply.Type: GrantFiled: March 30, 1990Date of Patent: June 2, 1992Assignee: Isuzu Motors LimitedInventors: Akihiro Shirata, Toshifumi Koshizawa, Yuichi Koyama, Yoshinobu Tsuchiya
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Patent number: 5050545Abstract: An engine preheating system preheats an engine such as a diesel engine efficiently and quickly with heating members such as self-temperature-controlling glow plugs. When the engine is to be preheated quickly, a voltage to be applied to the heating members is increased by electric energy stored in a capacitor capacitors, and a large current is supplied to the heating members to preheat the engine in a short period of time.Type: GrantFiled: March 30, 1990Date of Patent: September 24, 1991Assignee: Isuzu Motors, Ltd.Inventors: Akihiro Shirata, Toshifumi Koshizawa, Yuichi Koyama, Ken Kurabayashi
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Patent number: 5041776Abstract: A motor vehicle power supply device includes an alternator drivable by an engine mounted on a motor vehicle, a battery chargeable by electric energy generated by the alternator, a capacitor connected to the alternator and the battery, and a charging speed varying circuit arrangement connected between the capacitor, and the alternator and the battery, for varying the speed at which the capacitor is charged. The charging speed varying circuit arrangement is controlled to vary the speed at which the capacitor is charged, depending on the operating condition of the motor vehicle.Type: GrantFiled: March 30, 1990Date of Patent: August 20, 1991Assignee: Isuzu Motors LimitedInventors: Akihiro Shirata, Toshifumi Koshizawa, Yuichi Koyama, Yoshinobu Tsuchiya