Patents by Inventor Kentaro Ohmori
Kentaro Ohmori 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: 20240019029Abstract: A sealing device for sealing an annular space formed between an outer member and an inner member. The sealing device includes a seal member and a slinger member, the slinger member includes a slinger extension ring portion provided on an outer side in radial direction further than an outer diameter side end portion of a slinger ring portion, facing an axially outer side end surface of the outer member, and extending in radial direction. A first labyrinth extending in radial direction is formed between the slinger extension ring portion and the outer member, an outer side end portion of the first labyrinth in radial direction opening toward an outer space. A second labyrinth extending in axial direction is formed between an outer diameter side slinger cylindrical portion and a seal fitting cylindrical portion, the second labyrinth communicating with the first labyrinth.Type: ApplicationFiled: July 14, 2023Publication date: January 18, 2024Inventor: Kentaro OHMORI
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Patent number: 11333800Abstract: An optical waveguide-forming material has a low propagation loss even in a long wavelength region and has a high refractive index at a wavelength of 1,550 nm. An optical waveguide-forming composition includes (a) 100 parts by mass of a reactive silsesquioxane compound that is a polycondensation product of an alkoxysilane compound A of the following Formula [1]: Ar1—Si(OR1)3??[1] and an alkoxysilane compound B of the following Formula [2]: Ar2—Si(OR2)3??[2] and (b) 10 to 500 parts by mass of a fluorene compound of the following Formula [3]: An optical waveguide can be formed by using the composition.Type: GrantFiled: April 27, 2018Date of Patent: May 17, 2022Assignee: NISSAN CHEMICAL CORPORATIONInventors: Takehiro Nagasawa, Sayoko Tadokoro, Tsubasa Kashino, Kentaro Ohmori
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Publication number: 20200148875Abstract: An optical waveguide-forming material has a low propagation loss even in a long wavelength region and has a high refractive index at a wavelength of 1,550 nm. An optical waveguide-forming composition includes (a) 100 parts by mass of a reactive silsesquioxane compound that is a polycondensation product of an alkoxysilane compound A of the following Formula [1]: Ar1—Si(OR1)3??[1] and an alkoxysilane compound B of the following Formula [2]: Ar2—Si(OR2)3??[2] and (b) 10 to 500 parts by mass of a fluorene compound of the following Formula [3]: An optical waveguide can be formed by using the composition.Type: ApplicationFiled: April 27, 2018Publication date: May 14, 2020Applicant: NISSAN CHEMICAL CORPORATIONInventors: Takehiro NAGASAWA, Sayoko TADOKORO, Tsubasa KASHINO, Kentaro OHMORI
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Publication number: 20190338095Abstract: A production method for an optical waveguide including: a first step of inserting a needle-like portion at a tip end of an ejection unit into uncured cladding; a second step of moving the needle-like portion in the uncured cladding while ejecting an uncured material from the needle-like portion to form an uncured core surrounded and covered with the uncured cladding; a third step of removing the needle-like portion from the uncured cladding; and a fourth step of curing the uncured cladding and core, wherein the uncured cladding is composed of a composition including a reactive silicone compound composed of a polycondensate of a diarylsilicic acid compound of Formula [1] and an alkoxy silicon compound of Formula [2] Ar3—Si(OR1)aR23-a??[2], and a di(meth)acrylate compound of Formula [3] and the uncured core is composed of a composition including a reactive silicone compound and an aromatic vinyl compound of Formula [4]Type: ApplicationFiled: October 21, 2016Publication date: November 7, 2019Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Takaaki ISHIGURE, Sho YOSHIDA, Yuki SAITO, Kazuki YASUHARA, Takehiro NAGASAWA, Kentaro OHMORI
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Patent number: 10465054Abstract: A production method for an optical waveguide including: a first step of inserting a needle-like portion at a tip end of an ejection unit into uncured cladding; a second step of moving the needle-like portion in the uncured cladding while ejecting an uncured material from the needle-like portion to form an uncured core surrounded and covered with the uncured cladding; a third step of removing the needle-like portion from the uncured cladding; and a fourth step of curing the uncured cladding and core, wherein the uncured cladding is composed of a composition including a reactive silicone compound composed of a polycondensate of a diarylsilicic acid compound of Formula [1] and an alkoxy silicon compound of Formula [2] Ar3—Si(OR1)aR23-a??[2] and a di(meth)acrylate compound of Formula [3] and the uncured core is composed of a composition including a reactive silicone compound and an aromatic vinyl compound of Formula [4]Type: GrantFiled: October 21, 2016Date of Patent: November 5, 2019Assignee: NISSAN CHEMICAL CORPORATIONInventors: Takaaki Ishigure, Sho Yoshida, Yuki Saito, Kazuki Yasuhara, Takehiro Nagasawa, Kentaro Ohmori
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Patent number: 10450418Abstract: A polymerizable composition suitable for producing a molded article that can maintain a high refractive index and a low Abbe's number and can be restrained from dimensional changes due to a high-temperature thermal history has (a) 100 parts by mass of a specific reactive silsesquioxane compound, (b) 10 to 500 parts by mass of a specific fluorene compound and (c) 1 to 100 parts by mass of a specific aromatic vinyl compound. A cured product can be obtained by curing the polymerizable composition.Type: GrantFiled: August 12, 2016Date of Patent: October 22, 2019Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Takehiro Nagasawa, Taku Kato, Kentaro Ohmori, Keisuke Shuto, Kenji Takase
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Publication number: 20190292324Abstract: A polymerizable composition suitable for producing a molded article that can maintain a high refractive index and a low Abbe's number and can be restrained from dimensional changes due to a high-temperature thermal history has (a) 100 parts by mass of a specific reactive silsesquioxane compound, (b) 10 to 500 parts by mass of a specific fluorene compound and (c) 1 to 100 parts by mass of a specific aromatic vinyl compound. A cured product can be obtained by curing the polymerizable composition.Type: ApplicationFiled: August 12, 2016Publication date: September 26, 2019Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Takehiro NAGASAWA, Taku KATO, Kentaro OHMORI, Keisuke SHUTO, Kenji TAKASE
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Patent number: 10344803Abstract: A sealing device provided between an outer member and an inner member that coaxially rotates relative to the outer member. The sealing device includes a first member in a form of a double cylinder being fitted onto the inner member; and a second member including a core member that is fitted into the outer member and a seal lip portion made of elastic material that is fixed to the core member and elastically contacts the first member, the first member and the second member being combined. The first member includes an inner diametrical side cylindrical portion and an outer diametrical side cylindrical portion that extend toward the second member in an axial direction.Type: GrantFiled: December 10, 2015Date of Patent: July 9, 2019Assignee: UCHIYAMA MANUFACTURING CORP.Inventor: Kentaro Ohmori
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Patent number: 10308750Abstract: A polymerizable composition that is suitable to produce a molded product that can suppress cracking and dimensional change caused by a high-temperature heat history with a high refractive index of a cured product maintained. A polymerizable composition including (a) 100 parts by mass of the specific reactive silsesquioxane compound, (b) 10 to 500 parts by mass of the specific fluorene compound, a cured product obtained by the polymerizable composition and a material for a high-refractive index resin lens including the polymerizable composition.Type: GrantFiled: February 26, 2015Date of Patent: June 4, 2019Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Kentaro Ohmori, Takehiro Nagasawa
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Patent number: 10253126Abstract: An optical waveguide-forming composition: 100 parts by mass of a reactive silicone compound (a) composed of a polycondensate of a diarylsilicic acid compound A of Formula [1] Ar1 and Ar2 are a phenyl, naphthyl or a biphenyl group optionally substituted, and an alkoxy silicon compound B of Formula [2] Ar3—Si(OR1)aR23-a??[2]. Ar3 is a phenyl, naphthyl or biphenyl group having at least one group having a polymerizable double bond, R1 is methyl or ethyl group, R2 is methyl, ethyl, or vinylphenyl group, and a is 2 or 3, and 1 part by mass to 200 parts by mass of a di(meth)acrylate compound (b) of Formula [3]. R3 and R4 are a hydrogen atom or methyl group, R5 is a hydrogen atom, methyl group, or ethyl group, L1 and L2 are an alkylene group, and m and n are 0 or a positive integer, wherein m+n is 0 to 20.Type: GrantFiled: October 21, 2016Date of Patent: April 9, 2019Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Takehiro Nagasawa, Kentaro Ohmori
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Patent number: 10254649Abstract: A method for producing an optical waveguide composing an optical path conversion component having an extremely low signal loss, allowing a high surface packaging density and high speed operation, and allowing high productivity. A method for producing an optical waveguide that propagates light from a surface of a support to an oblique direction not vertical to the surface, the method for producing an optical waveguide comprising the steps of: (1) providing an anti-reflective coating on the support; (2) placing a photosensitive resin composition on the anti-reflective coating, and exposing the photosensitive resin composition to a light ray entering from a direction non-vertical to the surface of the support through a photomask for curing the composition; and (3) removing the unexposed photosensitive resin composition by development; and an optical waveguide obtained by the method.Type: GrantFiled: October 16, 2014Date of Patent: April 9, 2019Assignees: TOKAI UNIVERSITY EDUCATIONAL SYSTEM, NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Osamu Mikami, Kentaro Ohmori, Hideyuki Nawata
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Publication number: 20180305488Abstract: An optical waveguide-forming composition: 100 parts by mass of a reactive silicone compound (a) composed of a polycondensate of a diarylsilicic acid compound A of Formula [1] Ar1 and Ar2 are a phenyl, naphthyl or a biphenyl group optionally substituted, and an alkoxy silicon compound B of Formula [2] Ar3—Si(OR1)aR23-a??[2] Ar3 is a phenyl, naphthyl or biphenyl group having at least one group having a polymerizable double bond, R1 is methyl or ethyl group, R2 is methyl, ethyl, or vinylphenyl group, and a is 2 or 3, and 1 part by mass to 200 parts by mass of a di(meth)acrylate compound (b) of Formula [3]. R3 and R4 are a hydrogen atom or methyl group, R5 is a hydrogen atom, methyl group, or ethyl group, L1 and L2 are an alkylene group, and m and n are 0 or a positive integer, wherein m+n is 0 to 20.Type: ApplicationFiled: October 21, 2016Publication date: October 25, 2018Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Takehiro NAGASAWA, Kentaro OHMORI
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Publication number: 20180087575Abstract: A sealing device provided between an outer member and an inner member that coaxially rotates relative to the outer member. The sealing device includes a first member in a form of a double cylinder being fitted onto the inner member; and a second member including a core member that is fitted into the outer member and a seal lip portion made of elastic material that is fixed to the core member and elastically contacts the first member, the first member and the second member being combined. The first member includes an inner diametrical side cylindrical portion and an outer diametrical side cylindrical portion that extend toward the second member in an axial direction.Type: ApplicationFiled: December 10, 2015Publication date: March 29, 2018Inventor: Kentaro OHMORI
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Patent number: 9714364Abstract: There is provided a curable resin composition that exhibits high adhesive properties to materials such as glass, copper, aluminum, PET, and PC, which have been regarded as poor adherends relative to photo-curable compositions, and high adhesive properties also between adherends different from each other. A curable resin composition including a polyene compound of Formula (1): (where n1, n2, and n3 are each independently an integer of 2 to 4; and R1 to R9 are each independently a hydrogen atom or a C1-10 alkyl group). The composition may further include a thiol compound or a photopolymerization initiator. The thiol compound may be a compound having two to six thiol groups in the molecule, or be an aliphatic thiol, or be produced by a reaction of an aliphatic mercapto carboxylic acid and a polyhydric alcohol. The polyhydric alcohol may be an aliphatic polyhydric alcohol or hydroxyalkyl isocyanurate.Type: GrantFiled: September 24, 2012Date of Patent: July 25, 2017Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Kentaro Ohmori, Takeo Moro, Yuki Endo
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Publication number: 20170023704Abstract: A polymerizable composition suitable for producing a molding that maintains a high refractive index and a low Abbe's number, discoloration (thermal yellowing) resulting from high thermal hysteresis can be reduced, no Tg and a low CTE are exhibited, and has good mold release properties. A polymerizable composition having: 100 parts by mass of a reactive silicone compound (a) obtained by polycondensation, in the presence of an acid or a base, of a polycondensable compound containing at least a diarylsilicic acid compound A, an alkoxy silicon compound B having a phenyl group or a naphthyl group having at least one group having a polymerizable double bond, and an alkoxy silicon compound C containing a fluoro group; and 1 part by mass to 200 parts by mass of a (meth) acrylate compound (b), and a cured product and material for high refractive index resin lens which are obtained from the polymerizable composition.Type: ApplicationFiled: March 30, 2015Publication date: January 26, 2017Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Takehiro NAGASAWA, Kentaro OHMORI
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Publication number: 20160369029Abstract: A polymerizable composition that is suitable to produce a molded product that can suppress cracking and dimensional change caused by a high-temperature heat history with a high refractive index of a cured product maintained. A polymerizable composition including (a) 100 parts by mass of the specific reactive silsesquioxane compound, (b) 10 to 500 parts by mass of the specific fluorene compound, a cured product obtained by the polymerizable composition and a material for a high-refractive index resin lens including the polymerizable composition.Type: ApplicationFiled: February 26, 2015Publication date: December 22, 2016Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Kentaro OHMORI, Takehiro NAGASAWA
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Publication number: 20160369062Abstract: [Problem] To provide a polymerizable composition having an excellent transparency in near-infrared wavelength and excellent heat resistance, and a method for producing the same.Type: ApplicationFiled: August 30, 2016Publication date: December 22, 2016Inventors: Michael Popall, Ruth Houbertz-Krauss, Sebastien Cochet, Herbert Wolter, Kentaro Ohmori, Tetsuo Sato
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Patent number: 9434818Abstract: [Problem] To provide a polymerizable composition having an excellent transparency in near-infrared wavelength and excellent heat resistance, and a method for producing the same.Type: GrantFiled: January 21, 2011Date of Patent: September 6, 2016Assignees: Fraundhofer-Gesellschaft zur Foerderung der angewandter Forschung e.V., Nissan Chemical Industries, Ltd.Inventors: Michael Popall, Ruth Houbertz-Krauss, Sebastien Cochet, Herbert Wolter, Kentaro Ohmori, Tetsuo Sato
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Publication number: 20160252816Abstract: A method for producing an optical waveguide composing an optical path conversion component having an extremely low signal loss, allowing a high surface packaging density and high speed operation, and allowing high productivity. A method for producing an optical waveguide that propagates light from a surface of a support to an oblique direction not vertical to the surface, the method for producing an optical waveguide comprising the steps of: (1) providing an anti-reflective coating on the support; (2) placing a photosensitive resin composition on the anti-reflective coating, and exposing the photosensitive resin composition to a light ray entering from a direction non-vertical to the surface of the support through a photomask for curing the composition; and (3) removing the unexposed photosensitive resin composition by development; and an optical waveguide obtained by the method.Type: ApplicationFiled: October 16, 2014Publication date: September 1, 2016Applicants: TOKAI UNIVERSITY EDUCATIONAL SYSTEM, NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Osamu MIKAMI, Kentaro OHMORI, Hideyuki NAWATA
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Publication number: 20140235746Abstract: There is provided a curable resin composition that exhibits high adhesive properties to materials such as glass, copper, aluminum, PET, and PC, which have been regarded as poor adherends relative to photo-curable compositions, and high adhesive properties also between adherends different from each other. A curable resin composition including a polyene compound of Formula (1): (where n1, n2, and n3 are each independently an integer of 2 to 4; and R1 to R9 are each independently a hydrogen atom or a C1-10 alkyl group). The composition may further include a thiol compound or a photopolymerization initiator. The thiol compound may be a compound having two to six thiol groups in the molecule, or be an aliphatic thiol, or be produced by a reaction of an aliphatic mercapto carboxylic acid and a polyhydric alcohol. The polyhydric alcohol may be an aliphatic polyhydric alcohol or hydroxyalkyl isocyanurate.Type: ApplicationFiled: September 24, 2012Publication date: August 21, 2014Inventors: Kentaro Ohmori, Takeo Moro, Yuki Endo