Patents by Inventor Kazuhiro Kubo
Kazuhiro Kubo 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: 11945923Abstract: Disclosed is a method for producing an electrolytic capacitor, the method including the steps of preparing an anode foil that includes a dielectric layer, a cathode foil, and a fiber structure; preparing a conductive polymer dispersion liquid that contains a conductive polymer component and a dispersion medium; producing a separator by applying the conductive polymer dispersion liquid to the fiber structure and then removing at least a portion of the dispersion medium; and producing a capacitor element by sequentially stacking the anode foil, the separator, and the cathode foil. The dispersion medium contains water. The fiber structure contains a synthetic fiber in an amount of 50 mass % or more. The fiber structure has a density of 0.2 g/cm3 or more and less than 0.45 g/cm3.Type: GrantFiled: January 29, 2020Date of Patent: April 2, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Daisuke Kubo, Hiroyuki Arima, Tomoyuki Tashiro, Kazuhiro Takatani, Kenta Chashiro, Shumpei Matsushita
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Publication number: 20240088702Abstract: An electrical charging apparatus working to electrically charge an electrical storage device includes an electrical power converter and a controller. The electrical power converter converts an alternating-current input voltage into a direct-current voltage and outputs it to the electrical storage device. The controller works to control the electrical power converter to pulsate the charging current supplied from the electrical power converter to the electrical storage device. The controller also controls the electrical power converter to set a pulsation frequency of the charging current to an integral multiple of the frequency of the input voltage and also to bring a phase difference between a zero-crossing time of the input voltage and a time when the charging current is minimized to be smaller than or equal to one-eighth of one cycle of the input voltage.Type: ApplicationFiled: November 22, 2023Publication date: March 14, 2024Applicant: DENSO CORPORATIONInventors: Kazuhiro SHIRAKAWA, Keiya TANI, Shunichi KUBO
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Publication number: 20240088694Abstract: An electrical charging apparatus working to electrically charge an electrical storage device includes an electrical power converter and a controller. The electrical power converter converts an alternating-current input voltage into a direct-current voltage and outputs it to the electrical storage device. The controller works to control the electrical power converter to pulsate the charging current supplied from the electrical power converter to the electrical storage device. The controller also controls the electrical power converter to set a pulsation frequency of the charging current to an integral multiple of the frequency of the input voltage and also to bring a phase difference between a zero-crossing time of the input voltage and a time when the charging current is minimized to be smaller than or equal to one-eighth of one cycle of the input voltage.Type: ApplicationFiled: November 22, 2023Publication date: March 14, 2024Applicant: DENSO CORPORATIONInventors: Kazuhiro SHIRAKAWA, Keiya Tani, Shunichi Kubo
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Patent number: 10092655Abstract: The invention provides a cationic lipid capable of achieving higher intracellular delivery efficiency than conventional cationic lipids, when used as a lipid membrane structure which is a carrier for delivering functional nucleic acid. The cationic lipid is represented by the formula (1): wherein each symbol is as defined herein.Type: GrantFiled: August 7, 2015Date of Patent: October 9, 2018Assignees: NOF CORPORATION, NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITYInventors: Shota Sasaki, Masaki Ota, Kazuhiro Kubo, Hideyoshi Harashima, Hidetaka Akita, Hiroto Hatakeyama, Yuki Noguchi, Kota Tange, Yuta Nakai, Nayuta Shimizu
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Publication number: 20170274086Abstract: The invention provides a cationic lipid capable of achieving higher intracellular delivery efficiency than conventional cationic lipids, when used as a lipid membrane structure which is a carrier for delivering functional nucleic acid. The cationic lipid is represented by the formula (1): wherein each symbol is as defined herein.Type: ApplicationFiled: August 7, 2015Publication date: September 28, 2017Applicants: NOF CORPORATION, NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITYInventors: Shota SASAKI, Masaki OTA, Kazuhiro KUBO, Hideyoshi HARASHIMA, Hidetaka AKITA, Hiroto HATAKEYAMA, Yuki NOGUCHI, Kota TANGE, Yuta NAKAI, Nayuta SHIMIZU
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Patent number: 9708628Abstract: The present invention relates to a compound represented by the formula (1) wherein Xa and Xb are each independently X1 or X2; s is 1 or 2, R4 is an alkyl group having 1-6 carbon atoms, na and nb are each independently 0 or 1, R1a and R1b are each independently an alkylene group having 1-6 carbon atoms, R2a and R2b are each independently an alkylene group having 1-6 carbon atoms, Ya and Yb are each independently an ester bond, an amide bond, a carbamate bond, an ether bond or a urea bond, and R3a and R3b are each independently a sterol residue, a liposoluble vitamin residue or an aliphatic hydrocarbon group having 12-22 carbon atoms, and use thereof.Type: GrantFiled: May 16, 2014Date of Patent: July 18, 2017Assignees: NOF Corporation, National University Corporation Hokkaido UniversityInventors: Kota Tange, Masaya Arai, Kazuhiro Kubo, Hidetaka Akita, Hideyoshi Harashima, Hiroto Hatakeyama, Ryohei Ishiba, Masami Ukawa, Hiroki Tanaka
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Patent number: 9373815Abstract: Provided is an organic EL device which can prevent invasion of moisture to an organic EL element. The organic EL device has an organic EL element in which a first electrode layer, a functional layer, and a second electrode layer are stacked in sequence on a transparent substrate having a planar expanse, and an inorganic sealing layer for sealing at least an emission area of the organic EL element. A soft adhesion layer is stacked directly onto the inorganic sealing layer with a planar expanse, and the soft adhesion layer is made of a resin, and has flexibility.Type: GrantFiled: September 5, 2013Date of Patent: June 21, 2016Assignee: KANEKA CORPORATIONInventors: Takahiro Washio, Kazuhiro Kubo, Motoi Sasaki, Hideo Yamagishi, Akira Nishikawa, Katsuhiko Hayashi
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Patent number: 9371271Abstract: In production of a cationic lipid having at least one methylene group sandwiched between adjacent two cis form double bonds in the molecule, isomerization from a cis form to a trans form is suppressed. A compound represented by the following formula (I): R1—X??(I) (in Formula, R1 represents a hydrocarbon group having at least one methylene group sandwiched between adjacent two cis form double bonds in the molecule and having the carbon number of 8 to 24 and X represents a releasing group) is reacted with (B) a compound having at least one of each of tertiary amino group and hydroxyl group in the molecule in a saturated hydrocarbon solvent having the carbon number of 5 to 10 in the presence of an alkali catalyst.Type: GrantFiled: June 21, 2013Date of Patent: June 21, 2016Assignee: NOF CORPORATIONInventors: Kazuhiro Kubo, Kota Tange, Masaki Ohta
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Publication number: 20150228926Abstract: Provided is an organic EL device which can prevent invasion of moisture to an organic EL element. The organic EL device has an organic EL element in which a first electrode layer, a functional layer, and a second electrode layer are stacked in sequence on a transparent substrate having a planar expanse, and an inorganic sealing layer for sealing at least an emission area of the organic EL element. A soft adhesion layer is stacked directly onto the inorganic sealing layer with a planar expanse, and the soft adhesion layer is made of a resin, and has flexibility.Type: ApplicationFiled: September 5, 2013Publication date: August 13, 2015Inventors: Takahiro Washio, Kazuhiro Kubo, Motoi Sasaki, Hideo Yamagishi, Akira Nishikawa, Katsuhiko Hayashi
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Publication number: 20150191416Abstract: In production of a cationic lipid having at least one methylene group sandwiched between adjacent two cis form double bonds in the molecule, isomerization from a cis form to a trans form is suppressed. A compound represented by the following formula (I): R1—X??(I) (in Formula, R1 represents a hydrocarbon group having at least one methylene group sandwiched between adjacent two cis form double bonds in the molecule and having the carbon number of 8 to 24 and X represents a releasing group) is reacted with (B) a compound having at least one of each of tertiary amino group and hydroxyl group in the molecule in a saturated hydrocarbon solvent having the carbon number of 5 to 10 in the presence of an alkali catalyst.Type: ApplicationFiled: June 21, 2013Publication date: July 9, 2015Applicant: NOF CORPORATIONInventors: Kazuhiro Kubo, Kota Tange, Masaki Ohta
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Publication number: 20140335157Abstract: The present invention relates to a compound represented by the formula (1) wherein Xa and Xb are each independently X1 or X2; s is 1 or 2, R4 is an alkyl group having 1-6 carbon atoms, na and nb are each independently 0 or 1, R1a and R1b are each independently an alkylene group having 1-6 carbon atoms, R2a and R2b are each independently an alkylene group having 1-6 carbon atoms, Ya and Yb are each independently an ester bond, an amide bond, a carbamate bond, an ether bond or a urea bond, and R3a and R3b are each independently a sterol residue, a liposoluble vitamin residue or an aliphatic hydrocarbon group having 12-22 carbon atoms, and use thereof.Type: ApplicationFiled: May 16, 2014Publication date: November 13, 2014Inventors: Kota TANGE, Masaya ARAI, Kazuhiro KUBO, Hidetaka AKITA, Hideyoshi HARASHIMA, Hiroto HATAKEYAMA, Ryohei ISHIBA, Masami UKAWA, Hiroki TANAKA
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Patent number: 8557929Abstract: A method for producing a biodegradable polyoxyalkylene derivative, includes: reacting a biodegradable polyoxyalkylene compound represented by the formula (1) as defined herein with a compound represented by one of the formulae (I) to (IV) as defined herein in a presence of an alkaline solid salt, the biodegradable polyoxyalkylene derivative being represented by the formula (2) as defined herein.Type: GrantFiled: September 28, 2007Date of Patent: October 15, 2013Assignee: NOF CorporationInventors: Kazuhiro Kubo, Shigeru Kitano, Chika Ito
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Patent number: 8445712Abstract: A phospholipid derivative represented by the following formula (1) wherein each symbol is as described in the specification; a liposome containing the phospholipid derivative, and the like.Type: GrantFiled: November 12, 2010Date of Patent: May 21, 2013Assignees: NOF Corporation, Osaka Prefecture University Public CorporationInventors: Masaya Arai, Kazuhiro Kubo, Shoichi Yokoyama, Kenji Kono
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Publication number: 20120258165Abstract: A phospholipid derivative represented by the following formula (1) wherein each symbol is as described in the specification; a liposome containing the phospholipid derivative, and the like.Type: ApplicationFiled: November 12, 2010Publication date: October 11, 2012Applicants: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATION, NOF CORPORATIONInventors: Masaya Arai, Kazuhiro Kubo, Shoichi Yokoyama, Kenji Kono
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Publication number: 20110193224Abstract: In a semiconductor device, a pad electrode is disposed on a surface of a semiconductor substrate, and a surface-protective film is disposed on the surface of the semiconductor substrate and the pad electrode. The surface-protective film has an opening to expose a part of the pad electrode. A bump electrode is disposed on the part of the pad electrode exposed from the opening, and a bump is disposed on the bump electrode. The surface-protective film further has a slit at a location above the pad electrode. The slit has a frame shape surrounding a periphery of the bump electrode. The slit extends from a surface of the surface-protective film, which is opposite to the semiconductor substrate, and reaches the pad electrode.Type: ApplicationFiled: February 3, 2011Publication date: August 11, 2011Applicants: DENSO CORPORATION, MITSUMI ELECTRIC CO., LTD.Inventors: Hiroyasu Ito, Kazuhiro Kubo
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Publication number: 20090202619Abstract: A polyoxyalkylene chain-containing lipid derivative, which is represented by the following formula (1): wherein L, Y, W, X1, X2, X3, OA, Z, m1, m2, m3, n1, n2 and n3 are as defined in the specification.Type: ApplicationFiled: February 17, 2006Publication date: August 13, 2009Applicants: THE UNIVERSITY OF TOKUSHIMA, NOF CORPORATIONInventors: Hiroshi Kiwada, Tatsuhiro Ishida, Chika Ito, Kazuhiro Kubo, Kenji Sakanoue, Hiroshi Kikuchi
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Patent number: 7531604Abstract: A phospholipid derivative, utilizable for modification of liposomes and the like, which is a copolymer containing, as essential component units, a component unit A represented by the formula (1), a component unit B represented by the formula (2A) and/or the formula (2B), and a component unit C represented by the formula (3) [R1 and R2 represent hydrogen atom or methyl group, provided that R1 and R2 do not simultaneously represent methyl group; R3 represents a divalent hydrocarbon group having 1 to 3 carbon atoms; AO represents an oxyalkylene group having 2 to 4 carbon atoms; m represents an average molar number of the added oxyalkylene groups and is a number in the range represented as 4?m?100; R4 represents hydrogen atom, a hydrocarbon group or acyl group having 1 to 20 carbon atoms; R5CO and R6CO represent an acyl group having 8 to 24 carbon atoms; R7 represents a divalent hydrocarbon group having 2 to 4 carbon atoms; and X and Y represent hydrogen atom, an alkali metal atom, ammonium or an organic ammoniumType: GrantFiled: September 30, 2003Date of Patent: May 12, 2009Assignees: NOF Corporation, Daiichi Pharmaceutical Co., Ltd.Inventors: Syunsuke Ohhashi, Kazuhiro Kubo, Chika Itoh, Tohru Yasukohchi, Hiroshi Kikuchi, Norio Suzuki, Miho Kurosawa, Hitoshi Yamauchi
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Patent number: 7524981Abstract: A phospholipid derivative represented by the following formula (1): wherein [PG]k represents a residue of polyglycerin having a polymerization degree of k, wherein k is 2 to 50, R1CO and R2CO independently represent an acyl group having 8 to 22 carbon atoms, symbol “a” independently represents an integer of 0 to 5, symbol “b” independently represents 0 or 1, M represents hydrogen atom, an alkali metal atom, an ammonium, or an organic ammonium, and k1, k2, and k3 represent numbers satisfying the following conditions: 1?k1?(k+2)/2, 0?k2, and k1+k2+k3=k+2. The phospholipid derivative is highly safe for living bodies and can be suitably utilized in drug delivery systems such as liposome, and the like.Type: GrantFiled: December 12, 2003Date of Patent: April 28, 2009Assignees: NOF Corporation, DAIICHI Pharmaceutical Co., Ltd.Inventors: Kazuhiro Kubo, Chika Itoh, Syunsuke Ohhashi, Tohru Yasukohchi, Yusuke Ohkawa, Hiroshi Kikuchi, Norio Suzuki, Miho Takahashi, Hitoshi Yamauchi
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Patent number: 7495116Abstract: A phospholipid derivative represented by the formula (1) (Z represents a residue of a compound having 3 to 10 hydroxyl groups; AO represents an oxyalkylene group having 2 to 4 carbon atoms; R1CO and R2CO represent an acyl group having 8 to 22 carbon atoms; X represents hydrogen atom, an alkali metal atom, ammonium or an organic ammonium; “a” represents an integer of 0 to 4; “b” represents 0 or 1; Q represents hydrogen atom or methyl group; m represents an average number of moles of the oxyalkylene group added; and m, k1, k2, and k3 are numbers satisfying the following conditions: 3?m?200, 9?m×(k1+k2+k3)?1000, 1?k1?2, 0?k2?9 and 0?k3?9, and 3?k1+k2+k3?10), which is highly safe for living bodies, and is suitably used for solubilization and dispersion of physiologically active substances and the like, or in the fields of drug delivery systems such as liposomes and cosmetics.Type: GrantFiled: March 28, 2003Date of Patent: February 24, 2009Assignees: NOF Corporation, Daiichi Pharmaceutical Co., Ltd.Inventors: Chika Itoh, Kazuhiro Kubo, Syunsuke Ohhashi, Tohru Yasukohchi, Hiroshi Kikuchi, Norio Suzuki, Miho Takahashi, Hitoshi Yamauchi
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Patent number: 7399877Abstract: A phospholipid derivative represented by the following formula (I) wherein R1CO and R2CO independently represent an acyl group; R3 represents hydrogen atom, or a hydrocarbon group; symbol “a” represents an integer of 0 to 4; symbol “b” represents 0 or 1, provided that when a is 0, b is 0; X represents hydrogen atom, an alkali metal atom, an ammonium, or an organic ammonium; A1O and A3O represent an oxyalkylene group containing oxyethylene group, wherein the ratio of the oxyethylene group to the oxyalkylene group in A1O and A3O is 0.5 or larger in terms of a weight ratio; A2O represents an oxyalkylene group; symbols “m” and “q” represent an average molar number of added oxyalkylene groups; and symbol “n” represent an average molar number of added oxyalkylene groups; provided that m, n and q satisfy the following conditions: 5?m?600, 1?n?45, 0?q?200, 10?m+n+q?600, 0.04?n/(m+n+q), and q/(m+n+q)?0.Type: GrantFiled: March 19, 2004Date of Patent: July 15, 2008Assignees: NOF Corporation, Daiichi Pharmaceutical Co., Ltd.Inventors: Chika Itoh, Syunsuke Ohhashi, Kazuhiro Kubo, Tohru Yasukohchi, Hiroshi Kikuchi, Norio Suzuki, Miho Takahashi, Hitoshi Yamauchi