Patents by Inventor Yukichi Konami
Yukichi Konami 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: 20230139814Abstract: A sheet molding compound according to a first aspect of the present invention comprises: a thickened product of a resin composition comprising a vinyl ester resin, a thickener, a polymerization initiator, a polymerization inhibitor and isobornyl methacrylate; and a reinforcing fiber.Type: ApplicationFiled: June 23, 2022Publication date: May 4, 2023Applicant: Mitsubishi Chemical CorporationInventors: Seiji TSUCHIYA, Hayato OGASAWARA, Yukichi KONAMI, Hiroyuki NAKAO, Shinichirou FURUYA, Yasuhiko NABESHIMA, Atsushi TAKAHASHI
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Publication number: 20230080782Abstract: The present disclosure relates to a CFRP structural body having improved flame retardancy, and a carbon fiber prepreg capable of giving a CFRP structural body having improved flame retardancy. A CFRP structural body comprising CFRP, in which the CFRP structural body is molded from a carbon fiber prepreg comprising a carbon fiber mat formed of chopped carbon fiber bundles with a filament count of 3K or less impregnated with a resin composition, a carbon fiber content of the CFRP is 60% by mass or more, and the CFRP structural body does not have a portion with a thickness of less than 4 mm; and a prepreg comprising a carbon fiber mat impregnated with a resin composition, in which the carbon fiber mat is formed of chopped carbon fiber bundles with filament counts of 3K or less, and a carbon fiber content of the prepreg is 60% by mass or more.Type: ApplicationFiled: September 6, 2022Publication date: March 16, 2023Applicant: Mitsubishi Chemical CorporationInventor: Yukichi Konami
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Publication number: 20210331428Abstract: Provided are a fiber-reinforced resin molding material with which a lightweight and high-strength fiber-reinforced resin molded article can be easily obtained and a method for manufacturing the fiber-reinforced resin molding material.Type: ApplicationFiled: July 7, 2021Publication date: October 28, 2021Applicant: Mitsubishi Chemical CorporationInventor: Yukichi KONAMI
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Patent number: 10899856Abstract: The present invention provides a SMC of which excessive thickening with time is suppressed while of which sufficient initial thickening by an isocyanate-based thickener is maintained, particularly of which a decrease in flowability at the time of molding to be easily actualized in the case of containing an aromatic vinyl compound such as styrene is suppressed, and which exhibits excellent storage stability and moldability, a molding material for obtaining the SMC, and a fiber-reinforced composite material using the SMC. The invention provides a molding material including: a matrix resin composition containing the following Component (A), the following Component (B), the following Component (D) and the following Component (E); and the following Component (C), in which a proportion of the Component (E) with respect to 100 parts by mass of a sum of the Component (A) and the Component (B) is 0.002 part by mass or more and 0.Type: GrantFiled: October 4, 2018Date of Patent: January 26, 2021Assignee: Mitsubishi Chemical CorporationInventors: Yukichi Konami, Seiji Tsuchiya, Yuji Kazehaya
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Publication number: 20200131297Abstract: A sheet molding compound according to a first aspect of the present invention comprises: a thickened product of a resin composition comprising a vinyl ester resin, a thickener, a polymerization initiator, a polymerization inhibitor and isobornyl methacrylate; and a reinforcing fiber.Type: ApplicationFiled: December 30, 2019Publication date: April 30, 2020Applicant: Mitsubishi Chemical CorporationInventors: Seiji TSUCHIYA, Hayato OGASAWARA, Yukichi KONAMI, Hiroyuki NAKAO, Shinichirou FURUYA, Yasuhiko NABESHIMA, Atsushi TAKAHASHI
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Publication number: 20200047430Abstract: Provided are a fiber-reinforced resin molding material with which a lightweight and high-strength fiber-reinforced resin molded article can be easily obtained and a method for manufacturing the fiber-reinforced resin molding material.Type: ApplicationFiled: October 17, 2019Publication date: February 13, 2020Applicant: Mitsubishi Chemical CorporationInventor: Yukichi KONAMI
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Publication number: 20190040163Abstract: The present invention provides a SMC of which excessive thickening with time is suppressed while of which sufficient initial thickening by an isocyanate-based thickener is maintained, particularly of which a decrease in flowability at the time of molding to be easily actualized in the case of containing an aromatic vinyl compound such as styrene is suppressed, and which exhibits excellent storage stability and moldability, a molding material for obtaining the SMC, and a fiber-reinforced composite material using the SMC. The invention provides a molding material including: a matrix resin composition containing the following Component (A), the following Component (B), the following Component (D) and the following Component (E); and the following Component (C), in which a proportion of the Component (E) with respect to 100 parts by mass of a sum of the Component (A) and the Component (B) is 0.002 part by mass or more and 0.Type: ApplicationFiled: October 4, 2018Publication date: February 7, 2019Applicant: Mitsubishi Chemical CorporationInventors: Yukichi Konami, Seiji Tsuchiya, Yuji Kazehaya
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Patent number: 9969146Abstract: Provided are a layered substrate that has excellent mechanical properties such as a flexural strength or a flexural modulus applicable to a structural material, the variations in those mechanical properties are small, exhibits excellent formability into a complicated shape, and is able to be molded in a short time, and a method for manufacturing the same. A layered substrate fabricated by layering plural sheets of sheet-shaped prepregs containing a reinforcing fiber oriented in one direction and a thermoplastic matrix resin, wherein the prepreg has a slit penetrating from the front surface to the back surface, each slit is provided so as to intersect with each reinforcing fiber only one time.Type: GrantFiled: March 10, 2014Date of Patent: May 15, 2018Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Takeshi Ishikawa, Masao Tomioka, Masahiro Osuka, Yuuji Fujita, Yukichi Konami, Takahiro Hayashi
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Publication number: 20150207104Abstract: A laminate is described, including a substrate, an undercoat layer on the substrate, and an inorganic film on the undercoat layer. The material of the inorganic film is at least one material of a conductive metal oxide and a metal nitride. In an image obtained by Fourier transforming an image obtained by using an atomic force microscope to take a picture of a surface of the inorganic film, the azimuth angle of the image obtained from the Fourier transformation from the center of the image toward the direction of 12 o'clock is set to 0°. In approximate curves of 36 brightness value plots obtained by radially plotting the brightness values every 10° from 0°, a maximum value is observed in 18 or more of the approximate curves.Type: ApplicationFiled: July 22, 2013Publication date: July 23, 2015Inventors: Kazunori Mukunoki, Yumiko Saeki, Toshiaki Hattori, Yukichi Konami, Kouji Furukawa
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Publication number: 20130186467Abstract: A mold having an uneven structure is provided, wherein surface roughness Ra of the uneven structure, a maximum value Ra?(max) and a minimum value Ra?(min) of line roughness Ra? satisfy the following Expression (1). 0.13?(Ra?(max)?Ra?(min))/Ra?0.Type: ApplicationFiled: September 30, 2011Publication date: July 25, 2013Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Yumiko Saeki, Kuniaki Endo, Toshiaki Hattori, Yukichi Konami, Kouji Furukawa
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Patent number: 6870674Abstract: In a lens sheet, a lens portion (3) made of activation energy curing resin such as ultraviolet curing resin has a plurality of lens units, the lens portion (3) is disposed on at least one side of a transparent substrate (2) such as plastic sheet, a relaxation layer (1) is disposed between the transparent substrate (2) and the lens portion (3), and the thickness of the relaxation layer (1) is within a range of 1% to 30% of the height (H) of the lens units. The relaxation layer (1) is made of activation energy curing resin and formed integrally with the lens portion (3). The refractive index of the transparent substrate (2) is lower than that of the lens portion (3). The lens units are elongated prisms each having a substantially triangular cross section. The thickness of the relaxation layer is within a range of 1 ?m to 10 ?m, for example. The prisms have the vertical angle of 50° to 75° and are arranged with a pitch of 10 ?m to 150 ?m.Type: GrantFiled: March 28, 2003Date of Patent: March 22, 2005Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Makoto Ookawa, Masao Hamada, Akira Motonaga, Yukichi Konami, Akiyoshi Kogame
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Publication number: 20040075897Abstract: In a lens sheet, a lens portion (3) made of activation energy curing resin such as ultraviolet curing resin has a plurality of lens units, the lens portion (3) is disposed on at least one side of a transparent substrate (2) such as plastic sheet, a relaxation layer (1) is disposed between the transparent substrate (2) and the lens portion (3), and the thickness of the relaxation layer (1) is within a range of 1% to 30% of the height (H) of the lens units. The relaxation layer (1) is made of activation energy curing resin and formed integrally with the lens portion (3). The refractive index of the transparent substrate (2) is lower than that of the lens portion (3). The lens units are elongated prisms each having a substantially triangular cross section. The thickness of the relaxation layer is within a range of 1 &mgr;m to 10 &mgr;m, for example. The prisms have the vertical angle of 50° to 75° and are arranged with a pitch of 10 &mgr;m to 150 &mgr;m.Type: ApplicationFiled: March 28, 2003Publication date: April 22, 2004Applicant: MITSUBISHI RAYON CO., LTD.Inventors: Makoto Ookawa, Masao Hamada, Akira Motonaga, Yukichi Konami, Akiyoshi Kogame
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Patent number: 6628460Abstract: In a lens sheet, a lens portion made if activation energy curing resin such as ultraviolet curing resin has a plurality of lens units, the lens portion is disposed on at least one side of a transparent substrate such as plastic sheet, a relaxation layer is disposed between the transparent substrate and the lens portion, and the thickness of the relaxation layer is within a range of 1% to 30% of the height of the lens units. The relaxation layer is made of activation energy curing resin and formed integrally with the lens portion. The refractive index of the transparent substrate is lower than that of the lens portion. The lens units are elongated prisms each having a substantially triangular cross section.Type: GrantFiled: February 5, 2001Date of Patent: September 30, 2003Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Makoto Ookawa, Masao Hamada, Akira Motonaga, Yukichi Konami, Akiyoshi Kogame
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Patent number: 6206550Abstract: An active energy ray-curable composition comprising (A) 20 to 80 parts by weight of a compound represented by the following general formula I: wherein R1 represents hydrogen or methyl, X and Y may be the same or different and represent methyl, chlorine, bromine or iodine, and t and u each independently represent an integer of 0-2, (B) 20 to 80 parts by weight of at least one compound having at least one acryloyl or methacryloyl group in the molecule, or (B-1) 10 to 90 parts by weight of at least one compound having at least two acryloyl or methacryloyl groups in the molecule and (B-2) 1 to 90 parts by weight of at least one monoacrylate or monomethacrylate compound having one acryloyl or methacryloyl group in the molecule, and (C) 0.Type: GrantFiled: February 22, 1999Date of Patent: March 27, 2001Assignee: Mitsubishi Rayon Company Ltd.Inventors: Hiroshi Fukushima, Masao Hamada, Noriji Oishi, Yukichi Konami
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Patent number: 5969867Abstract: An active energy ray-curable composition comprising(A) 20 to 80 parts by weight of a compound represented by the following general formula I: ##STR1## wherein R.sup.1 represents hydrogen or methyl, X and Y may be the same or different and represent methyl, chlorine, bromine or iodine, and t and u each independently represent an integer of 0-2,(B) 20 to 80 parts by weight of at least one compound having at least one acryloyl or methacryloyl group in the molecule, or (B-1) 10 to 90 parts by weight of at least one compound having at least two acryloyl or methacryloyl groups in the molecule and (B-2) 1 to 90 parts by weight of at least one monoacrylate or monomethacrylate compound having one acryloyl or methacryloyl group in the molecule, and(C) 0.Type: GrantFiled: June 14, 1996Date of Patent: October 19, 1999Assignee: Mitsubishi Rayon Company Ltd.Inventors: Hiroshi Fukushima, Masao Hamada, Noriji Oishi, Yukichi Konami