Patents by Inventor Yukihiro Hasegawa
Yukihiro Hasegawa 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: 20240155769Abstract: A method for forming a functional layer includes giving information to the functional layer while forming the functional layer on a surface of an object. The functional layer includes an information area having the information and a non-information area other than the information area. The information area is different in color from the non-information area.Type: ApplicationFiled: October 30, 2023Publication date: May 9, 2024Applicant: Ricoh Company, Ltd.Inventors: Yukihiro WAKABAYASHI, Takashi FUJITA, Hiroyuki HIRATSUKA, Kohji TAKEUCHI, Tohru HASEGAWA, Hirotaka UNNO
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Publication number: 20230131275Abstract: Provided is a piezoelectric ceramic composition including a potassium sodium niobate-based perovskite type complex oxide represented by Compositional Formula ABO3, as a main component. Further, the piezoelectric ceramic composition contains Bi in an A site and Zr in a B site. Further, the piezoelectric ceramic composition includes a segregation portion positioned in a crystal grain. At least one of Zr or Bi is localized in the segregation portion.Type: ApplicationFiled: March 26, 2021Publication date: April 27, 2023Inventors: Takeshi HIRAYAMA, Shuhei TABATA, Makoto HIGASHIBEPPU, Gen SHIMURA, Yukihiro HASEGAWA
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Publication number: 20230120552Abstract: A first active region is made of a piezoelectric overlaps a midsection of a pressure chamber when viewed in plan through a pressure applying surface. A second active region is made of a piezoelectric member closer than the first active region to the pressure applying surface. The second active region extends over both a peripheral section of the pressure chamber and an outer region located outside the pressure chamber when viewed in plan through the pressure applying surface. A driver controls intensity of a first electric field applied to the first active region and intensity of a second electric field applied to the second active region such that the time period over which the first active region contracts and the time period over which the second active region contracts overlap or coincide with each other. The first electric field is more intense than the second electric field.Type: ApplicationFiled: March 26, 2021Publication date: April 20, 2023Inventors: Shuhei TABATA, Makoto HIGASHIBEPPU, Takeshi HIRAYAMA, Gen SHIMURA, Yukihiro HASEGAWA
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Publication number: 20230038095Abstract: A piezoelectric actuator includes a piezoelectric layer and a conductor layer that is provided directly or indirectly on the piezoelectric layer. In plan view, the conductor layer includes a plurality of individual electrodes that are arranged with intervals therebetween and a plurality of wiring lines that extend from the plurality of individual electrodes. Each wiring line includes a wide portion and a first narrow portion. The wide portion includes a part positioned at a center of the wiring line in a length direction. The first narrow portion is disposed between the wide portion and one of the plurality of individual electrodes to which the wiring line is connected. The first narrow portion has a width less than a width of the wide portion.Type: ApplicationFiled: December 25, 2020Publication date: February 9, 2023Inventors: Shuhei TABATA, Makoto HIGASHIBEPPU, Takeshi HIRAYAMA, Gen SHIMURA, Yukihiro HASEGAWA
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Publication number: 20230032270Abstract: A piezoelectric actuator includes a common electrode on a piezoelectric layer at a first side adjacent to a first surface and extends over a plurality of piezoelectric elements. A plurality of first individual electrodes is on the piezoelectric layer at a second side adjacent to a second surface. Each of the plurality of first individual electrodes is at a piezoelectric element of the plurality of piezoelectric elements, and are not electrically connected together. A first insulating layer is on the common electrode at the first side and extends over the plurality of piezoelectric elements. A plurality of second individual electrodes is on the first insulating layer at the first side. Each of the plurality of second individual electrodes is at a piezoelectric element of the plurality of piezoelectric elements, and overlap centers of the plurality of first individual electrodes. The plurality of second individual electrodes are electrically connected together.Type: ApplicationFiled: December 25, 2020Publication date: February 2, 2023Inventors: Shuhei TABATA, Makoto HIGASHIBEPPU, Takeshi HIRAYAMA, Yukihiro HASEGAWA, Gen SHIMURA, Takashi MIYAHARA, Atsushi ISHIHARA
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Patent number: 11097209Abstract: An object of the present invention is to provide a separation method capable of efficiently separating a light liquid and a heavy liquid from a mixed liquid containing the light liquid, the heavy liquid, and an emulsion liquid of the light liquid and the heavy liquid, such as an emulsion-layer extraction liquid in a vicinity of an interface in an extraction column. The present invention relates to a separation method for continuously separating a light liquid and a heavy liquid having a specific gravity larger than that of the light liquid from a mixed liquid containing the light liquid, the heavy liquid, and an emulsion liquid of the light liquid and the heavy liquid by introducing the mixed liquid into a separation tank, in which a specific separation layer is used for the separation tank.Type: GrantFiled: March 17, 2020Date of Patent: August 24, 2021Assignee: Mitsubishi Chemical CorporationInventors: Yasushi Ogawa, Masakazu Katou, Yukihiro Hasegawa
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Publication number: 20200215458Abstract: An object of the present invention is to provide a separation method capable of efficiently separating a light liquid and a heavy liquid from a mixed liquid containing the light liquid, the heavy liquid, and an emulsion liquid of the light liquid and the heavy liquid, such as an emulsion-layer extraction liquid in a vicinity of an interface in an extraction column. The present invention relates to a separation method for continuously separating a light liquid and a heavy liquid having a specific gravity larger than that of the light liquid from a mixed liquid containing the light liquid, the heavy liquid, and an emulsion liquid of the light liquid and the heavy liquid by introducing the mixed liquid into a separation tank, in which a specific separation layer is used for the separation tank.Type: ApplicationFiled: March 17, 2020Publication date: July 9, 2020Applicant: Mitsubishi Chemical CorporationInventors: Yasushi Ogawa, Masakazu Katou, Yukihiro Hasegawa
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Patent number: 8367860Abstract: The present invention provides a method for efficiently using an aqueous solution of (meth)acrylic acid at a low concentration formed in a production/storage step of (meth)acrylic acid. In the present invention, a (meth)acrylic acid derivative is produced by using as a raw material an aqueous solution of (meth)acrylic acid formed by one or both of: a device which reduces a pressure of a gas comprising (meth)acrylic acid in production of (meth)acrylic acid; and a device which collects (meth)acrylic acid from a gas comprising (meth)acrylic acid.Type: GrantFiled: May 27, 2008Date of Patent: February 5, 2013Assignee: Mitsubishi Chemical CorporationInventors: Yasushi Ogawa, Shuhei Yada, Yoshiro Suzuki, Kenji Takasaki, Yukihiro Hasegawa
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Patent number: 7868202Abstract: The object of the invention is to provide a method for producing (meth)acrolein or (meth)acrylic acid by gas phase catalytic oxidation reaction, which can perform smooth temperature control of the heat medium, can prevent hot spot effectively and can be handled easily, and an apparatus. The invention are a method for producing (meth)acrolein or (meth)acrylic acid by carrying out gas phase catalytic oxidation reaction of propane, propylene, isobutylene or (meth)acrolein with an oxygen-containing gas using an inorganic salt as a reaction temperature adjusting heat medium, characterized in that the material of a gland packing member which seals body part of a regulating valve arranged on a heat medium feeder and controlling supply and circulation velocity of the heat medium and a rotation axis that interfits to the body part, in such a manner that they can perform sliding, is a mica-based material, and a production apparatus.Type: GrantFiled: December 13, 2004Date of Patent: January 11, 2011Assignee: Mitsubishi Chemical CorporationInventors: Shuhei Yada, Hiroki Kawahara, Yukihiro Hasegawa
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Publication number: 20080228003Abstract: The present invention provides a method for efficiently using an aqueous solution of (meth)acrylic acid at a low concentration formed in a production/storage step of (meth)acrylic acid. In the present invention, a (meth)acrylic acid derivative is produced by using as a raw material an aqueous solution of (meth)acrylic acid formed by one or both of: a device which reduces a pressure of a gas comprising (meth)acrylic acid in production of (meth)acrylic acid; and a device which collects (meth)acrylic acid from a gas comprising (meth)acrylic acid.Type: ApplicationFiled: May 27, 2008Publication date: September 18, 2008Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Yasushi Ogawa, Shuhei Yada, Yoshiro Suzuki, Kenji Takasaki, Yukihiro Hasegawa
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Publication number: 20080071109Abstract: The object of the invention is to provide a method for producing (meth)acrolein or (meth)acrylic acid by gas phase catalytic oxidation reaction, which can perform smooth temperature control of the heat medium, can prevent hot spot effectively and can be handled easily, and an apparatus. The invention are a method for producing (meth)acrolein or (meth)acrylic acid by carrying out gas phase catalytic oxidation reaction of propane, propylene, isobutylene or (meth)acrolein with an oxygen-containing gas using an inorganic salt as a reaction temperature adjusting heat medium, characterized in that the material of a gland packing member which seals body part of a regulating valve arranged on a heat medium feeder and controlling supply and circulation velocity of the heat medium and a rotation axis that interfits to the body part, in such a manner that they can perform sliding, is a mica-based material, and a production apparatus.Type: ApplicationFiled: December 13, 2004Publication date: March 20, 2008Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Shuhei Yada, Hiroki Kawahara, Yukihiro Hasegawa
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Publication number: 20070060703Abstract: The present invention provides a method for efficiently using an aqueous solution of (meth)acrylic acid at a low concentration formed in a production/storage step of (meth)acrylic acid. In the present invention, a (meth)acrylic acid derivative is produced by using as a raw material an aqueous solution of (meth)acrylic acid formed by one or both of: a device which reduces a pressure of a gas comprising (meth)acrylic acid in production of (meth)acrylic acid; and a device which collects (meth)acrylic acid from a gas comprising (meth)acrylic acid.Type: ApplicationFiled: August 30, 2006Publication date: March 15, 2007Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Yasushi Ogawa, Shuhei Yada, Yoshiro Suzuki, Kenji Takasaki, Yukihiro Hasegawa