Patents by Inventor Hideyuki Dohi
Hideyuki Dohi 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: 20240144560Abstract: A training method that performs learning using appropriate low-quality image and high-quality image is provided. The invention is directed to a training method including executing learning by inputting a first image generated under a first image generation condition and a second image generated under a second image generation condition different from the first image generation condition to a learning apparatus that adjusts parameters so as to suppress an error between an input image and a converted image, in which the second image is selected such that an index value extracted from the second image is the same as or has a predetermined relationship with an index value extracted from the first image, or the second image is output from a second image generation tool different from a first image generation tool for generating the first image.Type: ApplicationFiled: March 3, 2022Publication date: May 2, 2024Inventors: Zhaohui CHENG, Yasutaka TOYODA, Hideto DOHI, Hiroya OHTA, Hideyuki KAZUMI
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Patent number: 10701957Abstract: The present invention provides a composition comprising a high content of highly pure, low-cost, and safe carotenoid and a method for industrially producing the same. The present invention also provides functional food, a pharmaceutical composition and a cosmetic product comprising such a composition. The present invention further provides a method for producing a composition containing at least 80% of carotenoid, which is characterized in treating a microorganism culture with extraction using a lower alcohol at 80° C. at the lowest or a combination of water and a lower alcohol at 80° C. at the lowest, and then washing and filtrating the precipitate obtained from the extract solution with a combination of a lower alcohol and water.Type: GrantFiled: August 29, 2008Date of Patent: July 7, 2020Assignee: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Toshiyuki Takahashi, Shotaro Uchizawa, Hideyuki Dohi, Kentaro Shimizu, Tomoyuki Ishizaki
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Publication number: 20100291251Abstract: The present invention provides a composition comprising a high content of highly pure, low-cost, and safe carotenoid and a method for industrially producing the same. The present invention also provides functional food, a pharmaceutical composition and a cosmetic product comprising such a composition. The present invention further provides a method for producing a composition containing at least 80% of carotenoid, which is characterized in treating a microorganism culture with extraction using a lower alcohol at 80° C. at the lowest or a combination of water and a lower alcohol at 80° C. at the lowest, and then washing and filtrating the precipitate obtained from the extract solution with a combination of a lower alcohol and water.Type: ApplicationFiled: August 29, 2008Publication date: November 18, 2010Applicant: Nippon Oil CorporationInventors: Toshiyuki Takahashi, Shotaro Uchizawa, Hideyuki Dohi, Kentaro Shimizu, Tomoyuki Ishizaki
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Patent number: 7022887Abstract: Diarylalkanes are prepared by alkylating an aromatic compound with a styrene derivative in the presence of a catalyst of specific synthetic porous crystalline material. The aromatic compound can be, for example, benzene, toluene, xylene, ethylbenzene, cumene, etc. The styrene derivative can be, for example, styrene, methylstyrene or the like.Type: GrantFiled: October 9, 2002Date of Patent: April 4, 2006Assignees: Nippon Petrochemicals Co., Ltd., ExxonMobil Chemicals Patents Inc.Inventor: Hideyuki Dohi
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Publication number: 20030109763Abstract: Diarylalkanes are prepared by alkylating an aromatic compound with a styrene derivative in the presence of a catalyst of specific synthetic porous crystalline material. The aromatic compound can be, for example, benzene, toluene, xylene, ethylbenzene, cumene, etc. The styrene derivative can be, for example, styrene, methylstyrene or the like.Type: ApplicationFiled: October 9, 2002Publication date: June 12, 2003Applicants: Nippon Petrochemicals Co., Ltd., ExxonMobil Chemical Patents, Inc.Inventor: Hideyuki Dohi
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Patent number: 6350930Abstract: A method for producing an aromatic compound styrenic compound adduct comprising the steps of: (1) reacting an aromatic compound and a styrenic compound in a first reactor 1 of fixed-bed flow type in a liquid phase in the presence of a solid acid catalyst, (2) circulating a part of the reaction mixture from the above step to the first reactor 1, (3) feeding a reaction mixture flowing out from the first reactor to a second reactor 3, thereby reducing the content of unsaturated components with the aid of a solid acid catalyst, and (4) distilling the resultant reaction mixture, to thereby obtain a fraction having a reduced content of unsaturated components. The method can be used for producing an aromatic compound/styrenic compound adduct having a reduced content of unsaturated components in high yield and at a low cost.Type: GrantFiled: April 19, 2000Date of Patent: February 26, 2002Assignee: Nippon Petrochemicals Company, LimitedInventors: Hideyuki Dohi, Shozo Hayashi
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Patent number: 6255549Abstract: A fraction of low bromine number mainly containing a styrenic compound/aromatic compound adduct can be attained, by feeding reaction materials of a styrenic compound and an aromatic compound to a fixed-bed flow reactor packed with a solid acid catalyst in a liquid phase at a temperature in the range of 40 to 350° C. to form a styrenic compound/aromatic compound adduct, in which (1) the feed of reaction materials is stopped when the bromine number of the above fraction is increased up to a predetermined value, (2) a saturated aromatic hydrocarbon having a mean value of the proportion of aromatic ring carbons in a molecule of 55% or more is fed to the reactor in a liquid phase at a temperature higher by 5 to 150° C. than that of the reaction mixture just before the above stopping, and (3) the feed of reaction materials is then restarted to obtain the fraction.Type: GrantFiled: April 19, 2000Date of Patent: July 3, 2001Assignee: Nippon Petrochemicals Company, LimitedInventors: Hideyuki Dohi, Shozo Hayashi
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Patent number: 6207866Abstract: A method to produce diarylmethane or its derivatives by condensation reaction can be carried out without difficulty and without the deterioration of catalyst, and the intended product can be produced inexpensively by recovering and recycling used alcohol. In the method, dimethoxymethane and an aromatic compound are reacted at a temperature of 80 to 400° C. with an acid catalyst. Further, the method comprises the steps of (1) reacting alcohol with formaldehyde using an acid catalyst to obtain acetal; (2) reacting the acetal and an aromatic compound using an acid catalyst to obtain a reaction mixture containing diarylmethane or its derivatives and alcohol; (3) separating and recovering diarylmethane or its derivatives and alcohol from the reaction mixture, and (4) recycling at least a portion of the recovered alcohol to the step (1).Type: GrantFiled: July 8, 1998Date of Patent: March 27, 2001Assignee: Nippon Petrochemicals Company, LimitedInventors: Tadanori Kawamata, Hideyuki Dohi, Satoru Inoue, Shozo Hayashi
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Patent number: 5880322Abstract: A method for producing diarylalkanes at a high yield using an aromatic hydrocarbon and inexpensive formalin in the presence of an easily usable solid acid catalyst, and in the method, a mixture of an aromatic hydrocarbon and formalin, said mixture containing 1.5 to 12% by weight of water, is reacted at a temperature of 170 to 450.degree. C. under an elevated pressure in the presence of a zeolitic catalyst.Type: GrantFiled: December 11, 1997Date of Patent: March 9, 1999Assignee: Nippen Petrochemicals Company, LimitedInventors: Hideyuki Dohi, Syozo Hayashi
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Patent number: 5877362Abstract: A method for producing diphenylmethane from 1,1-diphenylethane with a high yield and selectivity, wherein the 1,1-diphenylethane is reacted with hydrogen and/or water.Type: GrantFiled: September 9, 1997Date of Patent: March 2, 1999Assignee: Nippon Petrochemicals Company, LimitedInventors: Hideyuki Dohi, Kazuo Sakamoto, Tadashi Tayanagi
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Patent number: 5698023Abstract: This invention provides a process for producing copper phthalocyanine pigments which comprises reacting either phthalic anhydride or its derivatives with urea and a copper-containing substance, or either phthalonitrile or its derivative with a copper-containing substance in a reaction solvent by heating characterized in that an alkylxylene ingredient having a branched C4 side-chain represented by the following formula (1) is used as the reaction solvent: ##STR1##Type: GrantFiled: March 18, 1996Date of Patent: December 16, 1997Assignee: Nippon Petrochemical Co., Ltd.Inventors: Tsutomu Takashima, Kikuo Sasaki, Hideyuki Dohi
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Patent number: 5241997Abstract: A plurality of capacitors of the type each including capacitor elements with a very small gap between adjacent electrodes are filled and impregnated with a capacitor oil with the aid of a capacitor oil filling/impregnating apparatus. The apparatus comprises an impregnating chamber including a capacitor oil supplying portion, a charging/discharging platform having a plurality of capacitors placed thereon, and distributing/supplying means arranged above the charging/discharging platform so as to allow the capacitor oil to be supplied to the respective capacitors from above by its free falling-down induced by a dead weight of the capacitor oil itself.Type: GrantFiled: August 19, 1991Date of Patent: September 7, 1993Assignee: Nippon Petrochemicals Co., Ltd.Inventors: Shoji Tai, Shozo Hayashi, Hideyuki Dohi, Kunio Sugisawa
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Patent number: 5171906Abstract: A process for treating a by-product oil is disclosed, which comprises treating a raw material containing a heavy oil formed as a by-product in the step of producing alkylbenzene or the like by alkylation of benzene or the like, with a catalyst of crystalline synthetic zeolite having a SiO.sub.2 /Al.sub.2 O.sub.3 (molar ratio) of 20 or more and inlets of main pores (main cavity openings) of ten-membered oxygen rings in a liquid phase at a temperature of 320.degree. C. or below, wherein said raw material contains up to 2 wt % of methylnaphthalene. This process makes it possible to prevent reduction in the catalytic treatment efficiency.Type: GrantFiled: April 24, 1990Date of Patent: December 15, 1992Assignee: Nippon Petrochemicals Company, LimitedInventors: Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi, Atsushi Sato
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Patent number: 5134761Abstract: A new electrical insulating oil composition having improved low temperature characteristics which composition comprises a mixture of 40% by weight or more of benzyltoluene and the remainder of alkyl substituted diphenylmethane having 15 to 17 carbon atoms which is represented by the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 are C.sub.1 to C.sub.4 alkyl groups and the total number of carbon atoms in R.sub.1 and R.sub.2 is 1 to 4, except that R.sub.1 and R.sub.2 are simultaneously methyl groups; and the proportion of the total quantity of solid phase calculated according to the following general solid-liquid equilibrium equation is 45% by weight or less relative to the total quantity of said composition at -40.degree. C.: ##EQU1## wherein X.sub.i is the equilibrium mole fraction of a component i, in the liquid phase, .DELTA.H.sub.i.sup.f is the heat of fusion (cal.mol.sup.-1), T.sub.i.sup.f is the melting point (K), T is the temperature (K) of the system, and R is the gas constant (cal.Type: GrantFiled: May 8, 1991Date of Patent: August 4, 1992Assignee: Nippon Petrochemicals Company, LimitedInventors: Atsushi Sato, Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi
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Patent number: 5113029Abstract: A new electrical insulating oil composition having improved low temperature characteristics which composition comprises a mixture of 40% by weight or more of benzyltoluene and the remainder of alkyl substituted diphenylmethane having 15 to 17 carbon atoms which is represented by the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 are C.sub.1 to C.sub.4 alkyl groups and the total number of carbon atoms in R.sub.1 and R.sub.2 is 1 to 4, with the proviso that R.sub.1 and R.sub.2 may not simultaneously be methyl groups and the proportion of the total quantity of solid phase calculated according to the following general solid-liquid equilibrium equation is 45% by weight or less relative to the total quantity of said composition at -40.degree. C.: ##EQU1## where X.sub.i is the equilibrium mole fraction of a component i, in the liquid phase, .DELTA.H.sub.i.sup.f is the heat of fusion (cal.mol.sup.-1), T.sub.i.sup.Type: GrantFiled: September 4, 1987Date of Patent: May 12, 1992Assignee: Nippon Petrochemicals Company, LimitedInventors: Atsushi Sato, Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi
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Patent number: 5107395Abstract: An insulating oil comprising dibenzylbenzenes which is most suitably used for impregnating a metallized plastic film capacitor, is produced by the reaction of benzene or toluene with diphenylmethane or a methyl derivative thereof at 170.degree. C. to 400.degree. C. in the presence of a synthetic crystalline zeolite catalyst having a molar ratio of SiO.sub.2 to Al.sub.2 O.sub.3 of 20 or above, wherein the inlets of main pores are constituted of ten-membered oxygen rings.Type: GrantFiled: January 7, 1991Date of Patent: April 21, 1992Assignee: Nippon Petrochemicals Company, LimitedInventors: Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi, Atsushi Sato
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Patent number: 5081757Abstract: An electrical insulating oil composition having good low temperature characteristics which comprises at least 4 members selected from the group consisting of (a) m-ethylbiphenyl, (b) p-ethylbiphenyl, (c) o-benzyltoluene, (d) m-benzyltoluene, (e) p-benzyltoluene, (f) 1,1-diphenylethane, and (g) 1,1-diphenylethylene; and is characterized in that the proportion of solid phase at a temperature of -40.degree. C. of the electrical insulating oil composition is not more than 45% by weight and the proportion of the total quantity of solid phase is calculated according to the following general equation of solid-liquid equilibrium: ##EQU1## wherein X.sub.i is the equilibrium mole fraction of a component i in the liquid phase of the composition, .DELTA.H.sub.i.sup.f is the heat of fusion (cal.mol.sup.-1), T.sub.i.sup.f is the melting point (K), T is the temperature (K), and R is the gas constant (cal.mol.sup.-1.K.sup.-1).Type: GrantFiled: May 8, 1991Date of Patent: January 21, 1992Assignee: Nippon Petrochemicals Company, LimitedInventors: Atsushi Sato, Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi
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Patent number: 5017733Abstract: An electrical insulating oil composition which comprises 45% by weight or more of at least 2 members selected from the group consisting of (a) m-ethylbiphenyl, (b) p-ethylbiphenyl, (c) o-benzyltoluene, (d) m-benzyltoluene, (e) p-benzyltoluene, and (f) 1,1-diphenylethane; and the remainder of non-condensed bicyclic aromatic hydrocarbons having not more than 17 carbon atoms besides the above 6 components; and is characterized in that, when the temperature of the composition is -40.degree. C., (I) the total quantity of solid phase obtained by calculating according to the following solid-liquid equilibrium equation is 45% by weight or less relative to the total quantity of the composition, and (II) in the liquid phase composition calculated by the following solid-liquid equilibrium equation, the total quantity of the compounds (a) to (f) is 40% by weight or more and the viscosity of this liquid phase is 500 cSt or lower, ##EQU1## wherein X.sub.Type: GrantFiled: September 4, 1987Date of Patent: May 21, 1991Assignee: Nippon Petrochemicals Company, LimitedInventors: Atsushi Sato, Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi
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Patent number: 5015793Abstract: An electrical insulating oil composition having good low temperature characteristics which comprises at least 4 members selected from the group consisting of (a) m-ethylbiphenyl, (b) p-ethylbiphenyl, (c) o-benzyltoluene, (d) m-benzyltoluene, (e) p-benzyltoluene, (f) 1,1-diphenylethane, and (g) 1,1-diphenylethylene; and is characterized in that the proportion of solid phase at a temperature of -40.degree. C. of the electrical insulating oil composition is not more than 45% by weight and the proportion of the total quantity of solid phase is calculated according to the following general equation of solid-liquid equilibrium: ##EQU1## wherein X.sub.i is the equilibrium mole fraction of a component i in the liquid phase of the composition, .DELTA.H.sub.i.sup.f is the heat of fusion (cal.mol.sup.-1), T.sub.i.sup.f is the melting point (K), t is the temperature (K), and R is the gas constant (cal.mol.sup.-1.K.sup.-1).Type: GrantFiled: September 4, 1987Date of Patent: May 14, 1991Assignee: Nippon Petrochemicals Company, LimitedInventors: Atsushi Sato, Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi
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Patent number: 4982025Abstract: An electrical insulating oil mainly comprising a fraction having excellent low temperature characteristics, said fraction being prepared by bringing a by-product oil fraction containing diphenylmethane and 1,1-diphenylethane into contact with alkylbenzenes in the presence of a ZSM-5 type synthetic zeolite catalyst, then recovering a fraction containing 1,1-diphenylethane and other diarylalkanes and containing mainly components having boiling points in the range of 270.degree. to 300.degree. C. as atomspheric pressure basis, said by-product oil fraction being by-produced in the preparation of ethylbenzene by alkylating benzene with ethylene.Type: GrantFiled: March 8, 1989Date of Patent: January 1, 1991Assignee: Nippon Petrochemicals Company, LimitedInventors: Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi, Atsushi Sato