Patents by Inventor Kentarou Ichikawa
Kentarou Ichikawa 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: 20230118544Abstract: A biological tissue forming device that ensures a cell-cell interaction and an exchange of liquid components between cell layers of a formed biological tissues with high efficiency can be provided. A biological tissue forming device for forming a biological tissue having a plurality of cell layers formed of adherent cells has both surfaces on which culture regions of the adherent cells are disposed, and includes a culture membrane arranged between the plurality of cell layers after the adherent cells are cultured and a plurality of flow passages divided by the culture membrane. The culture membrane is formed of a readily-soluble material.Type: ApplicationFiled: December 19, 2022Publication date: April 20, 2023Inventors: Masahiro KUNINORI, Kazuhiro TSURUTA, Kentarou ICHIKAWA
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Publication number: 20200385171Abstract: A dual-structure container including an inner bag container (31) and an outer container (41) obtained by simultaneous stretch-blow molding according to a stack preform method using an inner bag container preform (1) and an outer container preform (3). On a body (33) of the inner bag container (31), contraction-control thin portions (50) are formal at a plurality of sites at intervals in the circumferential direction such that the thin portions (50) extend like strips in the axial direction.Type: ApplicationFiled: December 28, 2018Publication date: December 10, 2020Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.Inventors: Norio AKUZAWA, Kentarou ICHIKAWA, Hiroki IINO
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Patent number: 10543627Abstract: An injection apparatus including a plasticizing unit (2) that plasticizes a raw material resin and an injection unit (3) that injects a plasticized molten resin. The plasticizing unit includes a heating cylinder (20) having a foaming gas injection valve and a screw (21) provided inside the heating cylinder. The rotation and advance and retreat movements of the screw are controlled such that a raw material resin is plasticized by the screw and a foaming gas injected from a foaming gas injection valve is dissolved in the plasticized molten resin. After the screw retreats to a prescribed position according as the molten resin accumulates in the front end side of the heating cylinder by the screw that is rotating, the screw advances with rotating to cause the molten resin which has been accumulated in the front end side of the heating cylinder to be transferred to the injection unit.Type: GrantFiled: November 14, 2018Date of Patent: January 28, 2020Assignees: TOYO SEIKAN GROUP HOLDINGS, LTD., TOSHIBA MACHINE ENGINEERING CO., LTD.Inventors: Toyohiko Nakatani, Kentarou Ichikawa, Hideo Tanaka, Kazuhito Sato, Kishbaugh Levi
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Patent number: 10414534Abstract: A foamed and stretched plastic bottle having, in the body portion thereof, a foamed region in which foamed cells are distributed, wherein, in at least a portion of the foamed region, the lengths of the foamed cells in the axial direction of the bottle are so distributed as to gradually decrease as the positions of the foamed cells shift from the outer surface side of the body portion toward the central portion thereof and then gradually increase as their positions shift from the central portion thereof toward the inner surface side thereof. The foamed and stretched plastic bottle of the invention exhibits excellent light-shielding property.Type: GrantFiled: January 30, 2017Date of Patent: September 17, 2019Assignee: TOYO SEIKAN GROUP HOLDINGS, LTD.Inventors: Hiroki Iino, Kentarou Ichikawa, Nobuhisa Koiso, Norio Akuzawa, Tetsuro Nomura
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Patent number: 10384851Abstract: A composite foamed container forming, in the body portion, thereof, a foamed region in which foamed cells are distributed, the foamed region including a first gradationally foamed region A having a gradational distribution of the foamed cells of which the length in the direction of maximum stretch gradationally decreasing from the outer surface side of the body portion toward the inner surface side thereof and a second gradationally foamed region having a gradational distribution of the foamed cells of which the length in the direction of maximum stretch gradationally decreasing from the inner surface side of the body portion toward the outer surface side thereof. The container has a large resistance against the pressure exerted on the outer surface, good liquid-dispelling property and, at the same time, has improved appearance and heat resistance.Type: GrantFiled: April 25, 2014Date of Patent: August 20, 2019Assignee: TOYO SEIKAN GROUP HOLDINGS, LTD.Inventors: Kentarou Ichikawa, Norio Akuzawa, Nobuhisa Koiso, Hiroki Iino
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Patent number: 10370139Abstract: This invention provides a plastic container characterized in that an expanded layer comprising expanded cells having a flat shape with an average major axis of not more than 400 ?m and an average aspect ratio (L/t) of not less than 6 as viewed in cross section of the container wall along the maximum stretch direction, which are oriented in the stretch direction and are distributed so as to be superimposed on top of each other in the thickness-wise direction, is formed within the container wall. In this container, expanded cells having a flat shape are distributed so as to orient in a given direction and, thus, has light shielding properties and has a pearl-like appearance, that is, has a very high commercial value. Further, since any colorant is not contained, the suitability for recycling is excellent.Type: GrantFiled: July 28, 2016Date of Patent: August 6, 2019Assignee: TOYO SEIKAN KAISHA, LTD.Inventors: Kentarou Ichikawa, Nobuhisa Koiso
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Publication number: 20190077059Abstract: An injection apparatus including a plasticizing unit (2) that plasticizes a raw material resin and an injection unit (3) that injects a plasticized molten resin. The plasticizing unit includes a heating cylinder (20) having a foaming gas injection valve and a screw (21) provided inside the heating cylinder. The rotation and advance and retreat movements of the screw are controlled such that a raw material resin is plasticized by the screw and a foaming gas injected from a foaming gas injection valve is dissolved in the plasticized molten resin. After the screw retreats to a prescribed position according as the molten resin accumulates in the front end side of the heating cylinder by the screw that is rotating, the screw advances with rotating to cause the molten resin which has been accumulated in the front end side of the heating cylinder to be transferred to the injection unit.Type: ApplicationFiled: November 14, 2018Publication date: March 14, 2019Applicants: TOYO SEIKAN GROUP HOLDINGS, LTD., TOSHIBA MACHINE ENGINEERING CO., LTD.Inventors: Toyohiko NAKATANI, Kentarou ICHIKAWA, Hideo TANAKA, Kazuhito SATO, Kishbaugh LEVI
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Patent number: 10160144Abstract: A plasticizing process in which a molten resin that has been plasticized and dissolved in a foaming gas is sent to the front end side of a heating cylinder (20) by means of a screw (21) that rotates in a heating cylinder (20), and the screw (21) retreats according as the molten resin accumulates in the front end side of the heating cylinder (20); a transfer process in which the screw (21) is advanced with rotating and transfers the molten resin accumulated in the front end side of the heating cylinder (20) from a plasticizing unit (2) to an injection unit (3), and an injection process in which the molten resin is injected from the injection unit (3) are conducted and repeated to produce a foamable injection molded product.Type: GrantFiled: February 20, 2014Date of Patent: December 25, 2018Assignees: TOYO SEIKAN GROUP HOLDINGS, LTD., TOSHIBA MACHINE ENGINEERING CO., LTD.Inventors: Toyohiko Nakatani, Kentarou Ichikawa, Hideo Tanaka, Kazuhito Sato, Kishbaugh Levi
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Patent number: 9796497Abstract: A stretched and foamed plastic formed body forming, in at least a portion thereof, a foamed region which incorporates foamed cells therein, wherein the foamed cells have a flat shape with a maximum thickness of not more than 30 ?m and an average aspect ratio of not less than 4 as viewed in cross section of the formed body perpendicular to a direction in which the formed body is stretched to a maximum degree, and a non-foamed plastic skin layer having no foamed cell distributed therein is formed on the outer surface of the foamed region. The formed body is, further, blended with a non-lustrous pigment as the coloring agent, which is different from a lustrous pigment such as flaky pigment, and exhibits a metal color over the foamed region thereof. The foamed formed body exhibiting a metal color and, specifically, a gold color or a silver color is thus provided without using any expensive lustrous pigment such as metal powder pigment or flaky pigment.Type: GrantFiled: March 4, 2013Date of Patent: October 24, 2017Assignee: TOYO SEIKAN GROUP HOLDINGS, LTD.Inventors: Norio Akuzawa, Kentarou Ichikawa, Nobuhisa Koiso, Tetsuro Nomura, Hiroki Iino
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Patent number: 9694929Abstract: A foamed and stretched plastic bottle having, in the body portion thereof, a foamed region in which foamed cells are distributed, wherein, in at least a portion of the foamed region, the lengths of the foamed cells in the axial direction of the bottle are so distributed as to gradually decrease as the positions of the foamed cells shift from the outer surface side of the body portion toward the central portion thereof and then gradually increase as their positions shift from the central portion thereof toward the inner surface side thereof. The foamed and stretched plastic bottle of the invention exhibits excellent light-shielding property.Type: GrantFiled: April 23, 2013Date of Patent: July 4, 2017Assignee: TOYO SEIKAN GROUP HOLDINGS, LTD.Inventors: Hiroki Iino, Kentarou Ichikawa, Nobuhisa Koiso, Norio Akuzawa, Tetsuro Nomura
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Publication number: 20170174383Abstract: A foamed and stretched plastic bottle having, in the body portion thereof, a foamed region in which foamed cells are distributed, wherein, in at least a portion of the foamed region, the lengths of the foamed cells in the axial direction of the bottle are so distributed as to gradually decrease as the positions of the foamed cells shift from the outer surface side of the body portion toward the central portion thereof and then gradually increase as their positions shift from the central portion thereof toward the inner surface side thereof. The foamed and stretched plastic bottle of the invention exhibits excellent light-shielding property.Type: ApplicationFiled: January 30, 2017Publication date: June 22, 2017Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.Inventors: Hiroki IINO, Kentarou ICHIKAWA, Nobuhisa KOISO, Norio AKUZAWA, Tetsuro NOMURA
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Publication number: 20160332768Abstract: This invention provides a plastic container characterized in that an expanded layer comprising expanded cells having a flat shape with an average major axis of not more than 400 ?m and an average aspect ratio (L/t) of not less than 6 as viewed in cross section of the container wall along the maximum stretch direction, which are oriented in the stretch direction and are distributed so as to be superimposed on top of each other in the thickness-wise direction, is formed within the container wall. In this container, expanded cells having a flat shape are distributed so as to orient in a given direction and, thus, has light shielding properties and has a pearl-like appearance, that is, has a very high commercial value. Further, since any colorant is not contained, the suitability for recycling is excellent.Type: ApplicationFiled: July 28, 2016Publication date: November 17, 2016Applicant: TOYO SEIKAN KAISHA, LTD.Inventors: Kentarou ICHIKAWA, Nobuhisa KOISO
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Publication number: 20160318267Abstract: A method of forming a plastic material by using a mold 30 that has a split-mold structure forming air vent (39) in the split surfaces which are the butt surfaces of split molds, the air vent (39) being communicated with gas passages (37), wherein a resin is fed into the mold (30) so as to be formed, and after the formed article is taken out from the mold but before the rein is fed into the mold (30) so as to be formed in the next cycle, a cleaning gas G is fed through the gas passages (37) into the air vent (39) in a state where there is formed at least part of the mold (30) inclusive of the air vent (39), the cleaning gas G being discharged through passages separate from the gas passages (37).Type: ApplicationFiled: November 28, 2014Publication date: November 3, 2016Applicants: TOYO SEIKAN GROUP HOLDINGS, LTD., Toyo Seikan Co., Ltd.Inventors: Nobuhisa KOISO, Kentarou ICHIKAWA, Toyohiko NAKATANI, Hisashi KOTANI, Tomonari TAJIMA
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Patent number: 9321198Abstract: A foamed plastic container in which the cell diameters vary along a gradient so as not to decrease the content protection performance, in a manner quite different from the foamed cells distributed in the conventional foamed containers. The foamed plastic container has a container wall formed by using a plastic material and in which foamed cells are distributed, the lengths of the foamed cells in the surface direction of the container wall decreasing from the outer surface of the container toward the inner surface thereof.Type: GrantFiled: December 27, 2013Date of Patent: April 26, 2016Assignee: TOYO SEIKAN KAISHA, LTD.Inventors: Kentarou Ichikawa, Nobuhisa Koiso, Norio Akuzawa
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Publication number: 20160083167Abstract: A composite foamed container forming, in the body portion, thereof, a foamed region in which foamed cells are distributed, the foamed region including a first gradationally foamed region A having a gradational distribution of the foamed cells of which the length in the direction of maximum stretch gradationally decreasing from the outer surface side of the body portion toward the inner surface side thereof and a second gradationally foamed region having a gradational distribution of the foamed cells of which the length in the direction of maximum stretch gradationally decreasing from the inner surface side of the body portion toward the outer surface side thereof. The container has a large resistance against the pressure exerted on the outer surface, good liquid-dispelling property and, at the same time, has improved appearance and heat resistance.Type: ApplicationFiled: April 25, 2014Publication date: March 24, 2016Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.Inventors: Kentarou ICHIKAWA, Norio AKUZAWA, Nobuhisa KOISO, Hiroki IINO
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Patent number: 9290287Abstract: A foamed and stretched plastic container having a basic structure which includes a mouth portion and a body wall continuous to the mouth portion and is stretch-formed, the body wall forming a foamed region where foamed cells are distributed, and the mouth portion being an unfoamed region where no foamed cell is present, wherein the foamed cells present in the foamed region have a flat shape being stretched in the direction of stretch, and the foamed cells positioned in the central portion in the direction of thickness of the container wall have the largest lengths in the direction of maximum stretch.Type: GrantFiled: September 18, 2012Date of Patent: March 22, 2016Assignee: TOYO SEIKAN GROUP HOLDINGS, LTD.Inventors: Kentarou Ichikawa, Nobuhisa Koiso, Norio Akuzawa, Hiroki Iino, Tetsuro Nomura
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Patent number: 9283697Abstract: A foamed plastic container in which the cell diameters vary along a gradient so as not to decrease the content protection performance, in a manner quite different from the foamed cells distributed in the conventional foamed containers. The foamed plastic container has a container wall formed by using a plastic material and in which foamed cells are distributed, the lengths of the foamed cells in the surface direction of the container wall decreasing from the outer surface of the container toward the inner surface thereof.Type: GrantFiled: December 27, 2013Date of Patent: March 15, 2016Assignee: TOYO SEIKAN KAISHA, LTD.Inventors: Kentarou Ichikawa, Nobuhisa Koiso, Norio Akuzawa
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Publication number: 20160001474Abstract: A plasticizing process in which a molten resin that has been plasticized and dissolved in a foaming gas is sent to the front end side of a heating cylinder (20) by means of a screw (21) that rotates in a heating cylinder (20), and the screw (21) retreats according as the molten resin accumulates in the front end side of the heating cylinder (20); a transfer process in which the screw (21) is advanced with rotating and transfers the molten resin accumulated in the front end side of the heating cylinder (20) from a plasticizing unit (2) to an injection unit (3), and an injection process in which the molten resin is injected from the injection unit (3) are conducted and repeated to produce a foamable injection molded product.Type: ApplicationFiled: February 20, 2014Publication date: January 7, 2016Applicants: TOSHIBA MACHINE ENGINEERING CO., LTD., TOYO SEIKAN GROUP HOLDINGS, LTD.Inventors: Toyohiko NAKATANI, Kentarou ICHIKAWA, Hideo TANAKA, Kazuhito SATO, Kishbaugh LEVI
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Publication number: 20150267019Abstract: A foamed stretch-formed body which has a polyolefin resin single-layer structure that is physically foamed into an expansion ratio of 1.01 to 2.0 times, wherein the surface roughness Ra (JIS-B-0601-1994) is not more than 10 ?m in the region where the cells are distributed therein. Despite of its polyolefin resin single-layer structure, the foamed stretch-formed body effectively suppresses the deterioration in the appearance or in the light-shielding capability caused by foaming.Type: ApplicationFiled: October 18, 2013Publication date: September 24, 2015Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.Inventors: Norio Akuzawa, Kentarou Ichikawa, Nobuhisa Koiso, Hiroki Iino
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Publication number: 20150083737Abstract: A foamed and stretched plastic bottle having, in the body portion thereof, a foamed region in which foamed cells are distributed, wherein, in at least a portion of the foamed region, the lengths of the foamed cells in the axial direction of the bottle are so distributed as to gradually decrease as the positions of the foamed cells shift from the outer surface side of the body portion toward the central portion thereof and then gradually increase as their positions shift from the central portion thereof toward the inner surface side thereof. The foamed and stretched plastic bottle of the invention exhibits excellent light-shielding property.Type: ApplicationFiled: April 23, 2013Publication date: March 26, 2015Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.Inventors: Hiroki Iino, Kentarou Ichikawa, Nobuhisa Koiso, Norio Akuzawa, Tetsuro Nomura