Patents by Inventor Hirofumi Tanabe
Hirofumi Tanabe 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: 20240124389Abstract: An object of present invention is to provide a compound or a salt thereof constituting lipid particles that can achieve a high nucleic acid encapsulation rate and excellent delivery of nucleic acids, and to provide lipid particles and pharmaceutical composition using the compound or a salt thereof, which can achieve a high nucleic acid encapsulation rate and excellent delivery of nucleic acids. According to an aspect of the present invention, a compound represented by Formula (1) or a salt thereof is provided. In the formula, each symbol has a meaning defined in the present specification.Type: ApplicationFiled: October 26, 2023Publication date: April 18, 2024Applicant: FUJIFILM CorporationInventors: Shintaro TANABE, Tatsuya NITABARU, Mashiko YAMAMOTO, Hirofumi FUKUNAGA, Naoto NAKAMURA, Noriyuki KASAGI, Taisuke ENDO, Keiko SUZUKI
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Patent number: 9051398Abstract: A method for producing a (meth)acrylate copolymer via anionic polymerization of a mixture of a di(meth)acrylate and an alkyl (meth)acrylate in the presence of an organolithium compound, a tertiary organoaluminum compound, and at least one Lewis base selected from ethers and tertiary polyamines. The (meth)acrylate copolymer produced has a (meth)acryloyl groups in a side chain.Type: GrantFiled: March 13, 2013Date of Patent: June 9, 2015Assignee: KURARAY CO., LTD.Inventors: Hirofumi Tanabe, Seiya Shimizu, Kazuhiko Maekawa
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Publication number: 20150038658Abstract: [Object] To produce a (meth)acrylate copolymer useful as a photocurable resin composition at a temperature favorable to industrial production in a short time. [Solution] There is provided a method for producing a (meth)acrylate copolymer (X), including anionic polymerization of a mixture of a di(meth)acrylate represented by the following general formula (1) and an alkyl (meth)acrylate represented by the following general formula (2) in the presence of an organolithium compound (L), a tertiary organoaluminum compound (A) having a chemical structure represented by the general formula Al—O—Ar (wherein Ar denotes an aromatic ring) in its molecules, and at least one Lewis base (B) selected from the group consisting of ethers and tertiary polyamines.Type: ApplicationFiled: March 13, 2013Publication date: February 5, 2015Applicant: KURARAY CO., LTD.Inventors: Hirofumi Tanabe, Seiya Shimizu, Kazuhiko Maekawa
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Publication number: 20140120027Abstract: The object of the present invention is to provide a high-resolution conductive pattern. A conductive film formation method for forming a conductive film in a prescribed pattern comprises: a step in which a conductive carbon nanotube layer is formed; and an ultraviolet ray irradiation step in which areas of the conductive carbon nanotube layer formed in the above step, other than parts corresponding to the prescribed pattern, are irradiated with ultraviolet rays. Conductive carbon nanotubes in the ultraviolet ray irradiation areas turn insulating. Conductive carbon nanotubes in ultraviolet ray non-irradiation areas retain their conductive property.Type: ApplicationFiled: June 22, 2012Publication date: May 1, 2014Applicant: KURARAY CO., LTD.Inventors: Hirofumi Tanabe, Tomiaki Otake, Hiroshi Matsugi
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Patent number: 8233211Abstract: An electrochromic display device including a substrate including a dividing wall and a concave portion surrounded by the dividing wall, a first conductive layer formed on a bottom surface of the concave portion, a second conductive layer formed on the dividing wall to electrically connect the first conductive layer within adjacent concave portions to each other in a predetermined direction, a third conductive layer disposed opposite to the first conductive layer, a first color-development layer and an electrolyte layer formed between the first conductive layer and the third conductive layer, and an insulating layer formed on the second conductive layer on the dividing wall.Type: GrantFiled: September 16, 2008Date of Patent: July 31, 2012Assignee: KURARAY Co., Ltd.Inventors: Yoshirou Kondou, Hirofumi Tanabe
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Patent number: 7952802Abstract: Disclosed is an optical device which can be formed as a thinner layer by a simplified manufacturing process at a reduced cost. Specifically, the optical device has a multilayer structure wherein a polyvinyl alcohol- or polyvinylene-base polarizing film (b) and protective films (a and c) are directly laminated on top of another without any adhesive layer including a pressure sensitive adhesive layer interposed therebetween. The protective film (c) on one side is composed of a triacetyl cellulose, an alicyclic polyolefin resin, or an alicyclic acrylic resin, and the protective film (a) on the other side is composed of a triacetyl cellulose, a polycarbonate, a polyethylene terephthalate, a polyethylene naphthalate, a (meth)acrylate resin, an alicyclic polyolefin resin, or an alicyclic acrylic resin.Type: GrantFiled: November 9, 2009Date of Patent: May 31, 2011Assignee: Kuraray Co., Ltd.Inventors: Hirofumi Tanabe, Tatsufumi Watanabe, Katsuya Fujisawa
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Publication number: 20100328751Abstract: An electrochromic display device including a substrate including a dividing wall and a concave portion surrounded by the dividing wall, a first conductive layer formed on a bottom surface of the concave portion, a second conductive layer formed on the dividing wall to electrically connect the first conductive layer within adjacent concave portions to each other in a predetermined direction, a third conductive layer disposed opposite to the first conductive layer, a first color-development layer and an electrolyte layer formed between the first conductive layer and the third conductive layer, and an insulating layer formed on the second conductive layer on the dividing wall.Type: ApplicationFiled: September 16, 2008Publication date: December 30, 2010Applicant: KURARAY CO., LTD.Inventors: Yoshirou Kondou, Hirofumi Tanabe
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Publication number: 20100051192Abstract: Disclosed is an optical device which can be formed as a thinner layer by a simplified manufacturing process at a reduced cost. Specifically, the optical device has a multilayer structure wherein a polyvinyl alcohol- or polyvinylene-base polarizing film (b) and protective films (a and c) are directly laminated on top of another without any adhesive layer including a pressure sensitive adhesive layer interposed therebetween. The protective film (c) on one side is composed of a triacetyl cellulose, an alicyclic polyolefin resin, or an alicyclic acrylic resin, and the protective film (a) on the other side is composed of a triacetyl cellulose, a polycarbonate, a polyethylene terephthalate, a polyethylene naphthalate, a (meth)acrylate resin, an alicyclic polyolefin resin, or an alicyclic acrylic resin.Type: ApplicationFiled: November 9, 2009Publication date: March 4, 2010Applicant: KURARAY CO. LTD.Inventors: Hirofumi TANABE, Tatsufumi Watanabe, Katsuya Fujisawa
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Publication number: 20070159576Abstract: Disclosed is an optical device which can be formed as a thinner layer by a simplified manufacturing process at a reduced cost. Specifically, the optical device has a multilayer structure wherein a polyvinyl alcohol- or polyvinylene-base polarizing film (b) and protective films (a and c) are directly laminated on top of another without any adhesive layer including a pressure sensitive adhesive layer interposed therebetween. The protective film (c) on one side is composed of a triacetyl cellulose, an alicyclic polyolefin resin, or an alicyclic acrylic resin, and the protective film (a) on the other side is composed of a triacetyl cellulose, a polycarbonate, a polyethylene terephthalate, a polyethylene naphthalate, a (meth)acrylate resin, an alicyclic polyolefin resin, or an alicyclic acrylic resin.Type: ApplicationFiled: March 4, 2005Publication date: July 12, 2007Applicant: KURARAY CO. LTD.Inventors: Hirofumi Tanabe, Tatsufumi Watanabe, Katsuya Fujisawa
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Patent number: 6676968Abstract: A medicinal composition containing one or more compounds selected from the compounds represented by the following formula (I), salts of these compounds, solvates of these compounds and solvates of these salts and being capable of reducing the contact of the compounds with the components in the bile or pancreatic juice.Type: GrantFiled: July 18, 2001Date of Patent: January 13, 2004Assignee: Teijin LimitedInventors: Kiyoyuki Sakon, Masahiko Narasaki, Kentaro Fujinaga, Yoji Yamamoto, Hiroaki Mitsuhashi, Kazuoki Tsuruta, Hirofumi Tanabe, Yoshiaki Igarashi
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Patent number: 5965611Abstract: A pharmaceutical composition for treating peripheral circulation disorders, which is an emulsion containing an isocarbacyclin having the following formula (1): ##STR1## wherein R.sup.1 is a hydrogen atom or alkyl group and R.sup.2 is a alkyl group which may be substituted with, a alkenyl group or alkynyl group which may be substituted with, or a cycloalkyl group which may be substituted with, in an amount of 0.2 to 1,000 .mu.g per ml of the composition, a vegetable oil in an amount of 0.05 to 0.5 g per ml of the composition, a phospholipid in an amount of 0.01 to 0.5 g per g of the vegetable oil, and water is provided.Type: GrantFiled: December 2, 1996Date of Patent: October 12, 1999Assignees: Teigin Limited, Taisho Pharmaceutical, Yutaka MitzushimaInventors: Hirofumi Tanabe, Toshinobu Murakami, Takashi Matsunaga, Shigeru Nakayama
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Patent number: 5574061Abstract: A benzopyran derivative represented by the formula (I) or its pharmaceutically acceptable salt: ##STR1## wherein either one of X and Y stands for the following formula ##STR2## and the other one of X and Y and R.sup.1 -R.sup.10 stand for various substituents,and ACAT inhibitor, anti-hyperlipidemia agent and anti-atherosclerosis agent compositions containing the same as an active ingredient.Type: GrantFiled: March 23, 1994Date of Patent: November 12, 1996Assignee: Teijin LimitedInventors: Tatsuki Shiota, Takumi Takeyasu, Kenichiro Kataoka, Tsutomu Mochizuki, Hirofumi Tanabe, Mikio Ota, Hisao Yamaguchi
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Patent number: 5496853Abstract: Pharmaceutical compositions containing a benzoxazole compound and a 2,3-dihydrobenzofuran compound represented by the following formula (I) and its pharmaceutically acceptable salt: ##STR1## In the formula, any one of P, Q, R and S is a group represented by the formula: ##STR2## and R.sub.1, R.sub.2 and the reining three substituents out of the substituents P to S each independently stand for various substituents. These compositions are used as an ATCAT inhibitor or for treating hyperlipidemia and atherosclerosis.Type: GrantFiled: April 26, 1995Date of Patent: March 5, 1996Assignee: Teijin LimitedInventors: Tatsuki Shiota, Takumi Takeyasu, Kenichiro Kataoka, Tsutomu Mochizuki, Hirofumi Tanabe, Mikio Ota, Masatoshi Kano, Hisao Yamaguchi