Patents by Inventor Yoshio Fukui
Yoshio Fukui 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: 11578603Abstract: A turbine blade includes: a platform; an airfoil portion extending from the platform in a blade height direction and having a pressure surface and a suction surface extending between a leading edge and a trailing edge; a blade root portion positioned opposite to the airfoil portion across the platform in the blade height direction and having a bearing surface; and a shank positioned between the platform and the blade root portion. The shank has a cross-section which is perpendicular to the blade height direction of the airfoil portion, and in which a line segment connecting a widthwise center position of a leading-edge-side end portion of the shank and a widthwise center position of a trailing-edge-side end portion of the shank is sloped to a center line between a pressure-surface-side contour of the blade root portion and a suction-surface-side contour of the blade root portion.Type: GrantFiled: March 22, 2019Date of Patent: February 14, 2023Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yoshio Fukui, Masamitsu Kuwabara
-
Publication number: 20220275734Abstract: A flow channel forming plate has a gas path surface which comes into contact with combustion gas, an opposite gas path surface which faces a side opposite to the gas path surface, an end surface formed at a circumferential edge on the gas path surface, and a lateral passage formed between the gas path surface and the opposite gas path surface and in which cooling air flows. The end surface has a rear end surface, a front end surface, and a lateral end surface. The lateral passage has, along the gas path surface and the lateral end surface, a main passage portion extending in a direction in which the lateral end surface extends, and one or more narrow passage portions extending from an end of the main passage portion on a downstream side toward the rear end surface and opening on the rear end surface.Type: ApplicationFiled: December 28, 2021Publication date: September 1, 2022Inventors: Koya SAKAMOTO, Yoshio FUKUI
-
Patent number: 11021978Abstract: A shroud of a stator vane includes a suction-side passage, a pressure-side passage, and a plurality of rear-end passages. The plurality of rear-end passages are disposed to be aligned in a lateral direction between the suction-side passage extending along a suction-side end surface and the pressure-side passage extending along a pressure-side end surface, and open at a rear end surface. A suction-side first rear-end passage closest to the suction-side passage among the plurality of rear-end passages gradually extends closer to the suction-side passage toward a downstream side. A pressure-side first rear-end passage closest to the pressure-side passage among the plurality of rear-end passages gradually extends closer to the pressure-side passage toward the downstream side.Type: GrantFiled: October 22, 2018Date of Patent: June 1, 2021Assignee: MITSUBISHI POWER, LTD.Inventor: Yoshio Fukui
-
Publication number: 20210095567Abstract: A turbine blade includes: a platform; an airfoil portion extending from the platform in a blade height direction and having a pressure surface and a suction surface extending between a leading edge and a trailing edge; a blade root portion positioned opposite to the airfoil portion across the platform in the blade height direction and having a bearing surface; and a shank positioned between the platform and the blade root portion. The shank has a cross-section which is perpendicular to the blade height direction of the airfoil portion, and in which a line segment connecting a widthwise center position of a leading-edge-side end portion of the shank and a widthwise center position of a trailing-edge-side end portion of the shank is sloped to a center line between a pressure-surface-side contour of the blade root portion and a suction-surface-side contour of the blade root portion.Type: ApplicationFiled: March 22, 2019Publication date: April 1, 2021Inventors: Yoshio FUKUI, Masamitsu KUWABARA
-
Publication number: 20200300104Abstract: A shroud of a stator vane includes a suction-side passage, a pressure-side passage, and a plurality of rear-end passages. The plurality of rear-end passages are disposed to be aligned in a lateral direction between the suction-side passage extending along a suction-side end surface and the pressure-side passage extending along a pressure-side end surface, and open at a rear end surface. A suction-side first rear-end passage closest to the suction-side passage among the plurality of rear-end passages gradually extends closer to the suction-side passage toward a downstream side. A pressure-side first rear-end passage closest to the pressure-side passage among the plurality of rear-end passages gradually extends closer to the pressure-side passage toward the downstream side.Type: ApplicationFiled: October 22, 2018Publication date: September 24, 2020Inventor: Yoshio FUKUI
-
Patent number: 10704394Abstract: A flow passage forming plate includes a plate main body, a peripheral wall, and a ledge. The plate main body has a gas path surface facing a side of a gas flow passage, and an inner surface facing the opposite side from the gas path surface. The peripheral wall protrudes along a peripheral edge of the plate main body, from the inner surface toward an opposite-flow-passage side. The ledge protrudes along an inner wall surface of the peripheral wall, from the inner surface toward the opposite-flow-passage side. The ledge receives an impingement plate having a plurality of through-holes. The ledge is disposed only in a part of an inner wall surface of the peripheral wall.Type: GrantFiled: November 17, 2016Date of Patent: July 7, 2020Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Tadakazu Sakaguchi, Hiroshi Shimizu, Shinji Yoshida, Yoshio Fukui, Masamitsu Kuwabara
-
Publication number: 20180347369Abstract: A flow passage forming plate includes a plate main body, a peripheral wall, and a ledge. The plate main body has a gas path surface facing a side of a gas flow passage, and an inner surface facing the opposite side from the gas path surface. The peripheral wall protrudes along a peripheral edge of the plate main body, from the inner surface toward an opposite-flow-passage side. The ledge protrudes along an inner wall surface of the peripheral wall, from the inner surface toward the opposite-flow-passage side. The ledge receives an impingement plate having a plurality of through-holes. The ledge is disposed only in a part of an inner wall surface of the peripheral wall.Type: ApplicationFiled: November 17, 2016Publication date: December 6, 2018Inventors: Tadakazu SAKAGUCHI, Hiroshi SHIMIZU, Shinji YOSHIDA, Yoshio FUKUI, Masamitsu KUWABARA
-
Publication number: 20170138211Abstract: A ring segment cooling structure including: a cavity surrounded by main bodies of segment bodies; and cooling passages arranged inside the main body of the segment body in a circumferential direction, and having one ends communicating with the cavity and the other ends open at lateral ends of the segment body on the front side and the rear side in a rotation direction, wherein the cooling passages include first cooling passages formed in a first region of the segment body located on the front side in the rotation direction and through which cooling air is discharged from the rear side toward the front side in the rotation direction, and second cooling passages formed in a second region of the segment body located on the rear side in the rotation direction and through which the cooling air is discharged from the front side toward the rear side in the rotation direction.Type: ApplicationFiled: March 20, 2015Publication date: May 18, 2017Inventors: Yoshio FUKUI, Masamitsu KUWABARA, Satoshi HADA
-
Patent number: 5449820Abstract: The present invention provides a method of preparing high purity 2,6-naphthalene dicarboxylic acid in which the contents of coloring substances, heavy metal and bromine compounds can be reduced by dissolving coarse crystals of 2,6-naphthalene dicarboxylic acid containing impurities in supercritical or subcritical water containing an entrainer composed of an organic solvent containing oxygen and having a specific solubility parameter, and by cooling an obtained solution to cause crystals to precipitate so as to separate the crystals from mother liquor.Type: GrantFiled: December 23, 1994Date of Patent: September 12, 1995Assignee: Mitsubishi Chemical CorporationInventors: Yoshio Fukui, Tatsuto Yoshioka, Chikara Sugimoto, Manabu Okuyama, Norioki Mine, Masahiko Yamagishi
-
Patent number: 5095037Abstract: A pharmaceutical composition for treating inflammatory diseases, comprising (A) an effective amount of hyaluronic acid or its salt, and (B) an effective amount of an anti-inflammatory agent. The composition exhibits a synergistic therapeutic effect on inflammations and is useful for treating inflammatory diseases, particularly diseases of joint with inflammation.Type: GrantFiled: December 6, 1990Date of Patent: March 10, 1992Assignee: Nissho CorporationInventors: Kenichi Iwamitsu, Yukio Nakamura, Masahiro Kawasaki, Yoshio Fukui
-
Patent number: 5055612Abstract: A process for the preparation of naphthalene mono or polycarboxylic acids, such as 2,6-naphthalene dicarboxylic acid, is disclosed which includes oxidizing a naphthalene compound such as 2,6-diisopropylnaphthalene in a specific solvent with molecular oxygen in the presence of a catalyst containing a heavy metal compound and a bromine compound. The solvent is an aliphatic monocarboxylic acid and may further contain benzene and/or water. By controlling the ratio of the amount of catalyst metal to the feed rate of the raw material naphthalene compound, the yield of desired product can be controlled.Type: GrantFiled: December 19, 1989Date of Patent: October 8, 1991Assignees: NKK Corporation, Chiyoda CorporationInventors: Yakudo Tachibana, Kazuhiko Tate, Masami Ono, Nobuhiro Takei, Jun Miki, Hiroaki Taniguchi, Yoshimi Shiroto, Misunori Shimura, Yoshio Fukui
-
Patent number: 4992622Abstract: A method of separating 2,6-diisopropylnaphthalene from a mixture containing 2,6-diisopropylnaphthalene and structural isomers thereof including the 2,7-isomer is disclosed, wherein the mixture is first subjected to a selective adsorption and desorption treatment using a zeolite absorbent capable of adsorbing the 2,7-isomer to obtain a first extract containing the sorbed 2,7-isomer and a first raffinate containing non-sorbed isomers including the 2,6-isomer, the 2,6-isomer being thereafter separated from the first raffinate.Type: GrantFiled: August 2, 1989Date of Patent: February 12, 1991Assignees: Chiyoda Corporation, NKK CorporationInventors: Yoshimi Shiroto, Mitsunori Shimura, Kenji Shimokawa, Yoshio Fukui, Yakudo Tachibana, Kazuhiko Tate, Hiroaki Taniguchi
-
Patent number: 4950824Abstract: A process for the production of 2,6-diisopropylnaphthalene is disclosed wherein an isopropylation reaction mixture containing isopropylated naphthalenes is subjected to transalkylation with a triisopropylnaphthalene-containing mixture to obtain a mixture containing mono-, di- and tri-isopropylnaphthalenes which is then separated into a first fraction containing monisopropylnaphthalenes, a second fraction containing diisopropylnaphthalenes and a third fraction containing triisopropylnaphthalenes. The first and third fractions are recycled to the above system, while the second fraction is subjected to separation treatments for the recovery of 2,6-diisopropylnaphthalene. The second fraction from which 2,6-diisopropylnaphthalene has been removed is subjected to transalkylation with naphthalene to obtain a monoisopropylnaphthalene-rich mixture which is to be fed to the isopropylation step.Type: GrantFiled: August 2, 1989Date of Patent: August 21, 1990Assignees: Chiyoda Corporation, NKK CorporationInventors: Yoshimi Shiroto, Mitsunori Shimura, Kenji Shimokawa, Yoshio Fukui, Sachio Asaoka, Hiroto Tajima, Kazuaki Ueda, Yakudo Tachibana, Kazuhiko Tate, Hiroaki Taniguchi
-
Patent number: 4923616Abstract: A method of separating chemical components in a simulated-moving-bed type continuous separator comprising a series of plural packed beds filled with adsorbent for selectively adsorbing a specific component in a crude solution, in which the packed beds are divided into three zones, and the functions assigned to the respective packed beds are successively shifted to the downstream side of the flow by the quantity of one bed by means of switching means such as a channel switching control valve comprising a stationary disc and a rotary disc rotatable thereon, thereby extracting a product solution containing a high percentage of the specific component.Type: GrantFiled: September 23, 1988Date of Patent: May 8, 1990Assignee: Mitsubishi Petrochemical Company, Ltd.Inventors: Kentaro Hirata, Yoshio Fukui, Sadao Hayashi
-
Patent number: 4840942Abstract: An emulsifying dispersant is disclosed which is a nonionic surface active agent substantially free of a terminal primary hydroxyl group, obtained by esterifying or etherifying a terminal hydroxyl group of an alkylene oxide adduct of a hydroxyl compound or an alkylene oxide adduct of a carboxyl compound. This emulsifying dispersant is remarkably effective for preventing decomposition of a biocidal agent and for emulsifying the biocidal agent. A biocidal preparation formed using this emulsifying dispersant has good storage stability and good emulsion stability.Type: GrantFiled: October 2, 1984Date of Patent: June 20, 1989Assignee: Kao CorporationInventors: Tetsuji Iwasaki, Yoshio Fukui
-
Patent number: 4647412Abstract: Provided herein is a butanediol of the formula: ##STR1## wherein R is an alkyl group containing 5-21 carbon atoms or an alkenyl group containing 5-21 carbon atoms and which contains 1-2 unsaturated bonds. The present invention also contemplates a method of preparing such compounds and the use of such compounds as an anti-tumor agent for treating tumors.Type: GrantFiled: December 18, 1984Date of Patent: March 3, 1987Assignee: Towa Yakuhin Kabushiki KaishaInventors: Yoshio Fukui, Masatoshi Yamato, Naoki Umeda, Masahiro Kawasaki
-
Patent number: 4191636Abstract: This invention relates to a process for continuously converting a heavy oil into an asphaltene-metal-free oil by hydrotreating said heavy oil to crack asphaltenes selectively and remove heavy metals such as vanadium and nickel from said heavy oil simultaneously (hereinafter briefly referred to as "removal of metals"), separating the liquid products into a light fraction of an asphaltene-free and metal-free oil and a heavy fraction of an asphaltene and heavy metal-containing oil (hereinafter referred to as a "heavy fraction"), recovering said light fraction as a product, and recycling said heavy fraction to said hydrotreating step.Type: GrantFiled: June 6, 1978Date of Patent: March 4, 1980Assignee: Chiyoda Chemical Engineering & Construction Co., Ltd.Inventors: Yoshio Fukui, Yoshimi Shiroto, Mamoru Ando, Yasumasa Homma
-
Patent number: 4166026Abstract: A process for hydrodesulfurization of heavy hydrocarbon oil containing asphaltenes and heavy metals in large amounts is disclosed. The heavy oil is hydrotreated in a continuous 2-step process. In the first step the heavy oil is subjected to hydrodemetallization and selective cracking of asphaltenes by the use of a catalyst having a unique selectivity therefor. In the second step the effluent from the first step is subjected to hydrodesulfurization to produce desulfurized oils of high grade by the use of a catalyst having a pore volume and pore size distribution particularly adapted for the hydrodesulfurization of the effluent.Type: GrantFiled: July 17, 1978Date of Patent: August 28, 1979Assignee: Chiyoda Chemical Engineering & Construction Co., Ltd.Inventors: Yoshio Fukui, Yoshimi Shiroto, Mamoru Ando, Yasumasa Homma