Patents by Inventor Fumito Takeuchi
Fumito Takeuchi 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: 20240025109Abstract: The present invention provides a method of producing a modeled object by material extrusion using a 3D printer, the 3D printer including a modeling stage having a placement surface for placing the modeled object thereon, the method including: forming at least one first modeling layer on a surface of a modeling sheet disposed on the placement surface, using a molten product of a first modeling layer material; and forming at least one second modeling layer on the at least one first modeling layer, using a molten product of a second modeling layer material, wherein the first modeling layer material is different from the second modeling layer material.Type: ApplicationFiled: November 24, 2021Publication date: January 25, 2024Applicant: MITSUI CHEMICALS, INC.Inventors: Yuki KONDO, Fumito TAKEUCHI, Mikiko MIYATA
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Patent number: 11760819Abstract: The purpose of the present invention is to obtain an ethylene??-olefin?non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene??-olefin?non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an ?-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML(1+4) 125° C. is 5-100, and (4) the B value is 1.20 or more.Type: GrantFiled: December 23, 2020Date of Patent: September 19, 2023Assignee: MITSUI CHEMICALS, INC.Inventors: Koji Endo, Mayumi Hiwara, Sadahiko Matsuura, Yusuke Mizobuchi, Yuichi Yamamura, Yuji Noguchi, Yuji Ishii, Tatsuya Sakai, Keisuke Shishido, Kotaro Ichino, Kiyohide Inomata, Fumito Takeuchi, Kenta Ide
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Patent number: 11613595Abstract: The purpose of the present invention is to obtain an ethylene??-olefin?non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene??-olefin?non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an ?-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML(1+4)125° C. is 5-100, and (4) the B value is 1.20 or more.Type: GrantFiled: December 23, 2020Date of Patent: March 28, 2023Assignee: MITSUI CHEMICALS, INC.Inventors: Koji Endo, Mayumi Hiwara, Sadahiko Matsuura, Yusuke Mizobuchi, Yuichi Yamamura, Yuji Noguchi, Yuji Ishii, Tatsuya Sakai, Keisuke Shishido, Kotaro Ichino, Kiyohide Inomata, Fumito Takeuchi, Kenta Ide
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Publication number: 20230059817Abstract: A cyclic olefin copolymer includes one or more olefin-derived constituent units (A) represented by General Formula (I), one or more cyclic olefin-derived constituent units (C) represented by General Formula (II), one or more cyclic non-conjugated diene-derived constituent units (B) represented by General Formula (III), and one or more cyclic olefin-derived constituent units (D) represented by General Formula (V), in which, when a total number of moles of the constituent units in the cyclic olefin copolymer is 100 mol %, a content of the constituent unit (C) is 5 mol % or more and 40 mol % or less.Type: ApplicationFiled: January 20, 2021Publication date: February 23, 2023Applicant: MITSUI CHEMICALS, INC.Inventors: Kazuoki NAKAI, Hirohiko MURASE, Fumito TAKEUCHI
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Publication number: 20220340742Abstract: A material for 3D printing includes a thermoplastic resin, a thermoplastic elastomer, and a filler. The filler includes talc. A content of the filler is 5% by mass or more and 70% by mass or less with respect to a total mass of the material for 3D printing.Type: ApplicationFiled: September 23, 2020Publication date: October 27, 2022Applicants: MITSUI CHEMICALS, INC., PRIME POLYMER CO., LTD.Inventors: Yuki KONDO, Tomoaki ITO, Fumito TAKEUCHI, Pingfan CHEN
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Publication number: 20220275135Abstract: A cyclic olefin-based copolymer resin composition includes a cyclic olefin-based copolymer (M); and a maleimide compound (L), in which the cyclic olefin-based copolymer (M) includes a cyclic olefin-based copolymer (m) including a repeating unit represented by a specific general formula, the maleimide compound (L) has a solubility parameter (SP value) obtained by Fedors method of 19J1/2/cm3/2 or more and 26J1/2/cm3/2 or less and includes a maleimide compound (1), which is a bismaleimide compound having at least two maleimide groups in a molecule, and when a total of the cyclic olefin-based copolymer (M) and the maleimide compound (L) is 100 parts by mass, a content of the maleimide compound (L) is 1 part by mass or more and 50 parts by mass or less.Type: ApplicationFiled: November 22, 2019Publication date: September 1, 2022Applicant: MITSUI CHEMICALS, INC.Inventors: Hirohiko MURASE, Koutarou ASAHINA, Fumito TAKEUCHI
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Publication number: 20210122861Abstract: The purpose of the present invention is to obtain an ethylene??-olefin?non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene??-olefin?non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an ?-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML(1+4) 125° C. is 5-100, and (4) the B value is 1.20 or more.Type: ApplicationFiled: December 23, 2020Publication date: April 29, 2021Applicant: MITSUI CHEMICALS, INC.Inventors: Koji ENDO, Mayumi HIWARA, Sadahiko MATSUURA, Yusuke MIZOBUCHI, Yuichi YAMAMURA, Yuji NOGUCHI, Yuji ISHII, Tatsuya SAKAI, Keisuke SHISHIDO, Kotaro ICHINO, Kiyohide INOMATA, Fumito TAKEUCHI, Kenta IDE
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Publication number: 20210122860Abstract: The purpose of the present invention is to obtain an ethylene??-olefin?non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene??-olefin?non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an ?-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML(1+4)125° C. is 5-100, and (4) the B value is 1.20 or more.Type: ApplicationFiled: December 23, 2020Publication date: April 29, 2021Applicant: MITSUI CHEMICALS, INC.Inventors: Koji ENDO, Mayumi HIWARA, Sadahiko MATSUURA, Yusuke MIZOBUCHI, Yuichi YAMAMURA, Yuji NOGUCHI, Yuji ISHII, Tatsuya SAKAI, Keisuke SHISHIDO, Kotaro ICHINO, Kiyohide INOMATA, Fumito TAKEUCHI, Kenta IDE
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Patent number: 10919997Abstract: The purpose of the present invention is to obtain an ethylene.?-olefin.non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene.?-olefin.non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an ?-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML(1+4)125° C. is 5-100, and (4) the B value is 1.20 or more.Type: GrantFiled: February 10, 2015Date of Patent: February 16, 2021Assignee: MITSUI CHEMICALS, INC.Inventors: Koji Endo, Mayumi Hiwara, Sadahiko Matsuura, Yusuke Mizobuchi, Yuichi Yamamura, Yuji Noguchi, Yuji Ishii, Tatsuya Sakai, Keisuke Shishido, Kotaro Ichino, Kiyohide Inomata, Fumito Takeuchi, Kenta Ide
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Publication number: 20200129682Abstract: A supporter for body (1) to be attached to a skin of a body includes a pad base member (10) which is made of an elastic member and has a curved shape at least locally, and an adhesion layer (11) which is provided in a surface of the pad base member (10) on a side being adhered to the skin. The adhesion layer (11) is adhered to the skin with the curved shape of the pad base member (10) being stretched along a shape of the body, and holds the skin in a state in which the skin is drawn up, using a restoring force of the pad base member (10).Type: ApplicationFiled: October 31, 2018Publication date: April 30, 2020Inventors: Aya TAKEUCHI, Fumito TAKEUCHI, Tomoaki ITO, Kazuoki NAKAI, Kenzo KASE
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Patent number: 10457802Abstract: The present invention is a crosslinked body obtained by crosslinking a composition which comprises 100 parts by mass of (A) an ethylene/?-olefin/non-conjugated polyene copolymer having one or more peaks of tan ? in the temperature range of ?50 to ?30° C., the tan ? being determined by dynamic viscoelasticity measurement, 50 to 500 parts by mass of (B) an olefin-based copolymer having one or more peaks of tan ? in the temperature range of 0 to 40° C., the tan ? being determined by dynamic viscoelasticity measurement, 5 to 300 parts by mass of (C) a softener, 10 to 300 parts by mass of (D) a reinforcing filler and 0.1 to 10 parts by mass of (E) a vulcanizing agent, and which has a content ratio by mass ((C)/(D)) of (C) the softener to (D) the reinforcing filler of 0.3 to 1.5, the crosslinked body having a durometer hardness (value immediately after measurement) of 50 to 8.Type: GrantFiled: March 1, 2016Date of Patent: October 29, 2019Assignee: MITSUI CHEMICALS, INC.Inventors: Fumito Takeuchi, Kengo Goto
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Publication number: 20190218853Abstract: The elastically deformable seal member has hollow tube (6) and porous body (7) inserted into the interior of tube (6). The interior of tube (6) is not completely filled by porous body (7), and air-holding space (8) is provided between a portion of the inner wall of tube (6) and a portion of the outer surface of porous body (7). Porous body (7) comprises a material having a water absorption coefficient in the range of 10% to 3000% in an uncompressed state. Porous body (7) is disposed such that the volume of porous body (7) occupies 2.5% or more of the internal volume of tube (6).Type: ApplicationFiled: May 16, 2017Publication date: July 18, 2019Applicant: Mitsui Chemicals, Inc.Inventors: Fumito TAKEUCHI, Kengo GOTO
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Publication number: 20190211193Abstract: The present invention is a crosslinked body obtained by crosslinking a composition which comprises 100 parts by mass of (A) an ethylene/?-olefin/non-conjugated polyene copolymer having one or more peaks of tan ? in the temperature range of ?50 to ?30° C., the tan ? being determined by dynamic viscoelasticity measurement, 50 to 500 parts by mass of (B) an olefin-based copolymer having one or more peaks of tan ? in the temperature range of 0 to 40° C., the tan ? being determined by dynamic viscoelasticity measurement, 5 to 300 parts by mass of (C) a softener, 10 to 300 parts by mass of (D) a reinforcing filler and 0.1 to 10 parts by mass of (E) a vulcanizing agent, and which has a content ratio by mass ((C)/(D)) of (C) the softener to (D) the reinforcing filler of 0.3 to 1.5, the crosslinked body having a durometer hardness (value immediately after measurement) of 50 to 8.Type: ApplicationFiled: March 1, 2016Publication date: July 11, 2019Applicant: MITSUI CHEMICALS, INC.Inventors: Fumito TAKEUCHI, Kengo GOTO
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Patent number: 9865752Abstract: An encapsulating material for solar cell of the invention contains an ethylene/?-olefin copolymer, and a content of a fluorine element in the ethylene/?-olefin copolymer, which is determined using a combustion method and an ion chromatograph method, is equal to or less than 30 ppm.Type: GrantFiled: March 13, 2013Date of Patent: January 9, 2018Assignees: MITSUI CHEMICALS, INC., MITSUI CHEMICALS TOHCELLO, INC.Inventors: Shigenobu Ikenaga, Fumito Takeuchi, Tomoaki Ito
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Patent number: 9761747Abstract: The encapsulating material for solar cell is an encapsulating material for solar cell including an ethylene/?-olefin copolymer and an organic peroxide having a one-minute half-life temperature in a range of 100° C. to 170° C. In addition, the complex viscosity of the encapsulating material for solar cell has the minimum value (?*1) of the complex viscosity at a temperature in a range of 100° C. to lower than 135° C., the minimum value (?*1) of the complex viscosity is in a range of 6.0×103 Pa·s to 4.0×104 Pa·s, the complex viscosity (?*2) of the encapsulating material for solar cell at 150° C. is in a range of 2.0×104 Pa·s to 1.0×105 Pa·s, and the content of the organic peroxide in the encapsulating material for solar cell is in a range of 0.1 parts by weight to 3 parts by weight with respect to 100 parts by weight of the ethylene/?-olefin copolymer.Type: GrantFiled: November 18, 2013Date of Patent: September 12, 2017Assignee: MITSUI CHEMICALS TOHCELLO, INC.Inventors: Shigenobu Ikenaga, Fumito Takeuchi, Tomoaki Ito, Kazuhiro Yarimizu, Kaoru Ohshimizu, Masaaki Odoi
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Publication number: 20170148427Abstract: The present invention provides a sound insulator which includes: a flexible material (A) having a peak of loss tangent (tan ?), which is determined by dynamic viscoelasticity measurement, in a temperature range of ?60° C. to lower than 0° C.; and a resin (B) having a peak of loss tangent (tan ?), which is determined by dynamic viscoelasticity measurement, in a temperature range of 0° C. to 60° C., the sound insulator including the resin (B) at a ratio of 1 to 50 parts by mass with respect to 100 parts by mass of the flexible material (A). The sound insulator of the present invention is a material which realizes excellent sound insulation properties without relying on a complex shape and an increase in weight.Type: ApplicationFiled: March 18, 2015Publication date: May 25, 2017Applicant: MITSUI CHEMICALS, INC.Inventors: Fumito TAKEUCHI, Yuji ISHII, Mitsunao ARINO, Ryo NAKATSUJI, Kiyohide INOMATA, Tatsuya SAKAI
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Patent number: 9595630Abstract: An encapsulating material for solar cell containing an ethylene/?-olefin copolymer satisfying the following a1) and a2), and a specific peroxyketal having a 1-hour half-life temperature in a range of 100 to 135 degrees centigrade; the peroxyketal being contained in an amount of 0.1 to less than 0.8 weight parts relative to 100 weight parts of the ethylene/?-olefin copolymer. a1) the shore A hardness is from 60 to 85 as measured in accordance with ASTM D2240. a2) MFR is from 2 to 50 g/10 minutes as measured under the conditions of a temperature of 190 degrees centigrade and a load of 2.16 kg in accordance with ASTM D1238.Type: GrantFiled: August 16, 2012Date of Patent: March 14, 2017Assignee: MITSUI CHEMICALS TOHCELLO, INC.Inventors: Shigenobu Ikenaga, Fumito Takeuchi, Keiji Watanabe, Tomoaki Ito
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Patent number: 9543461Abstract: An encapsulating material for solar cell that is capable of suppressing the corrosion of metal and the occurrence of yellowing at a high temperature and has excellent long-term reliability in a constant temperature and humidity is provided. The encapsulating material for solar cell of the invention contains an ethylene/?-olefin copolymer, a hindered amine-based light stabilizer, a hindered phenol-based stabilizer, and a phosphorous-based stabilizer as essential components.Type: GrantFiled: February 7, 2013Date of Patent: January 10, 2017Assignee: MITSUI CHEMICALS, INC.Inventors: Shigenobu Ikenaga, Fumito Takeuchi, Tomoaki Ito
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Publication number: 20160347894Abstract: The purpose of the present invention is to obtain an ethylene•?-olefin•non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene•?-olefin•non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an ?-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML(1+4)125° C. is 5-100, and (4) the B value is 1.20 or more.Type: ApplicationFiled: February 10, 2015Publication date: December 1, 2016Applicant: MITSUI CHEMICALS, INC.Inventors: Koji ENDO, Mayumi HIWARA, Sadahiko MATSUURA, Yusuke MIZOBUCHI, Yuichi YAMAMURA, Yuji NOGUCHI, Yuji ISHII, Tatsuya SAKAI, Keisuke SHISHIDO, Kotaro ICHINO, Kiyohide INOMATA, Fumito TAKEUCHI, Kenta IDE
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Publication number: 20160254402Abstract: Provided is a sheet set for encapsulating a solar cell which is disposed between a light-receiving surface side protective member and a back surface side protective member, and is used for encapsulating a solar cell element and a wiring material. The sheet set for encapsulating a solar cell includes a first encapsulating material sheet disposed on a light-receiving surface side and a second encapsulating material sheet disposed on a back surface side. A storage elastic modulus (P1) of the first encapsulating material sheet before a cross-linking treatment and a storage elastic modulus (P2) of the second encapsulating material sheet before the cross-linking treatment satisfy a relationship of the following Expression (1), at 120° C. when solid viscoelasticity is measured under conditions of a measurement temperature range of 25° C. to 180° C., a frequency of 1.0 Hz, a temperature rising rate of 10° C./minute, and a shear mode.Type: ApplicationFiled: October 8, 2014Publication date: September 1, 2016Applicant: MITSUI CHEMICALS TOHCELLO, INC.Inventors: Tomoaki ITO, Fumito TAKEUCHI, Shigenobu IKENAGA, Kazuhiro YARIMIZU, Kaoru OHSHIMIZU