Patents by Inventor Tetsuo Toyoshima
Tetsuo Toyoshima 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: 20220203286Abstract: A honeycomb filter includes a pillar-shaped honeycomb substrate having a porous partition wall disposed so as to surround a plurality of cells serving as a fluid through channel extending from a first end face to a second end face; and a plugging portion provided at an open end on the first end face side or the second end face side of each of the cells, wherein the partition wall constituting the honeycomb substrate is composed of a ceramic porous material, a ratio of a volume of pores having a pore diameter of 10 ?m or less with respect to a total pore volume of the partition wall measured by a mercury press-in method is 85 to 95%, and an average pore diameter of the partition wall measured by the mercury press-in method is 4 to 10 ?m.Type: ApplicationFiled: December 2, 2021Publication date: June 30, 2022Applicant: NGK Insulators, Ltd.Inventors: Ayumi SUZUKI, Shu MURAOKA, Tetsuo TOYOSHIMA, Shinsuke SATO
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Patent number: 10300423Abstract: A sealed honeycomb structure may include porous walls dividedly forming inlet cells and outlet cells extending from an end surface of an inlet side to an end surface of an outlet side, an outlet side sealing portion, and an inlet side sealing portion, wherein at least one outlet cell is a reinforced cell, where a reinforced part for reinforcing the outlet cell is formed at at least one corner portion at which the walls on a cross-section vertical to an extending direction of the cell cross each other, and wherein the inlet cell is a non-reinforced cell where the reinforced part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other.Type: GrantFiled: September 12, 2016Date of Patent: May 28, 2019Assignees: Hyundai Motor Company, Kia Motors Corporation, NGK Insulators, Ltd.Inventors: Tetsuo Toyoshima, Akira Takahashi, Yuichi Hamazaki, Jung Min Seo, Won Soon Park
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Patent number: 10065142Abstract: A sealed honeycomb structure may include porous walls dividedly forming inlet cells and outlet cells extending from an end surface of an inlet side to an end surface of an outlet side, inlet and outlet side sealing portion 5b, and an inlet side sealing portion, wherein at least one outlet cell is a reinforced cell where a reinforcing part 6 for reinforcing the outlet cell 2b is formed at at least one corner portion 21a at which the walls on a cross-section vertical to an extending direction of the cell cross each other, wherein the inlet cell is a non-reinforced cell where the reinforcing part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other, and wherein the reinforcing parts 6 of the reinforced cells 22 are formed at a section of the honeycomb structure from the end surface of the outlet side in the extending direction of the cell.Type: GrantFiled: April 13, 2017Date of Patent: September 4, 2018Assignees: Hyundai Motor Company, Kia Motors Corporation, NGK Insulators, Ltd.Inventors: Tetsuo Toyoshima, Akira Takahashi, Yuichi Hamazaki, Jung Min Seo, Won Soon Park
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Patent number: 10029201Abstract: A sealed honeycomb structure may include porous walls dividedly forming inlet cells and outlet cells extending from an end surface of an inlet side to an end surface of an outlet side, inlet and outlet side sealing portion 5b, and an inlet side sealing portion, wherein at least one outlet cell is a reinforced cell where a reinforcing part 6 for reinforcing the outlet cell 2b is formed at at least one corner portion 21a at which the walls on a cross-section vertical to an extending direction of the cell cross each other, wherein the inlet cell is a non-reinforced cell where the reinforcing part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other, and wherein the reinforcing parts 6 of the reinforced cells 22 are formed at a section of the honeycomb structure from the end surface of the outlet side in the extending direction of the cell.Type: GrantFiled: April 13, 2017Date of Patent: July 24, 2018Assignees: Hyundai Motor Company, Kia Motors Corporation, NGK Insulators, Ltd.Inventors: Tetsuo Toyoshima, Akira Takahashi, Yuichi Hamazaki, Jung Min Seo, Won Soon Park
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Publication number: 20170216753Abstract: A sealed honeycomb structure may include porous walls dividedly forming inlet cells and outlet cells extending from an end surface of an inlet side to an end surface of an outlet side, inlet and outlet side sealing portion 5b, and an inlet side sealing portion, wherein at least one outlet cell is a reinforced cell where a reinforcing part 6 for reinforcing the outlet cell 2b is formed at at least one corner portion 21a at which the walls on a cross-section vertical to an extending direction of the cell cross each other, wherein the inlet cell is a non-reinforced cell where the reinforcing part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other, and wherein the reinforcing parts 6 of the reinforced cells 22 are formed at a section of the honeycomb structure from the end surface of the outlet side in the extending direction of the cell.Type: ApplicationFiled: April 13, 2017Publication date: August 3, 2017Applicants: Hyundai Motor Company, Kia Motors Corporation, NGK Insulators, Ltd.Inventors: Tetsuo Toyoshima, Akira Takahashi, Yuichi Hamazaki, Jung Min Seo, Won Soon Park
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Patent number: 9623359Abstract: A sealed honeycomb structure may include porous walls dividedly forming inlet cells and outlet cells extending from an end surface of an inlet side to an end surface of an outlet side, inlet and outlet side sealing portion 5b, and an inlet side sealing portion, wherein at least one outlet cell is a reinforced cell where a reinforcing part 6 for reinforcing the outlet cell 2b is formed at at least one corner portion 21a at which the walls on a cross-section vertical to an extending direction of the cell cross each other, wherein the inlet cell is a non-reinforced cell where the reinforcing part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other, and wherein the reinforcing parts 6 of the reinforced cells 22 are formed at a section of the honeycomb structure from the end surface of the outlet side in the extending direction of the cell.Type: GrantFiled: March 30, 2012Date of Patent: April 18, 2017Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, NGK INSULATORS, LTD.Inventors: Tetsuo Toyoshima, Akira Takahashi, Yuichi Hamazaki, Jung Min Seo, Won Soon Park
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Patent number: 9616372Abstract: A honeycomb structure has porous partition walls defining and forming a plurality of cells communicating between two end faces, and a circumferential wall formed integrally with the partition walls. The cells include partial cells positioned in an outermost circumferential portion of the honeycomb structure and being partially in contact with the circumferential wall, and normal cells other than the partial cells. As to the normal cells, a plugging portion is formed in one end portion of each normal cell, and as to the partial cells, in the partial cells in which the plugging portion to be formed in one end portion thereof, the plugging portion is not formed in at least a part of a partial cell in which an area ratio obtained by Equation (1) is smaller than 80%: the area ratio(%)=an area of the partial cell/an area of the normal cellĂ—100??(1).Type: GrantFiled: September 4, 2014Date of Patent: April 11, 2017Assignee: NGK Insulators, Ltd.Inventors: Akira Takahashi, Yuichi Hamazaki, Tetsuo Toyoshima
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Publication number: 20160375395Abstract: A sealed honeycomb structure may include porous walls dividedly forming inlet cells and outlet cells extending from an end surface of an inlet side to an end surface of an outlet side, an outlet side sealing portion, and an inlet side sealing portion, wherein at least one outlet cell is a reinforced cell, where a reinforced part for reinforcing the outlet cell is formed at at least one corner portion at which the walls on a cross-section vertical to an extending direction of the cell cross each other, and wherein the inlet cell is a non-reinforced cell where the reinforced part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other.Type: ApplicationFiled: September 12, 2016Publication date: December 29, 2016Applicants: Hyundai Motor Company, Kia Motors Corporation, NGK Insulators, Ltd.Inventors: Tetsuo TOYOSHIMA, Akira TAKAHASHI, Yuichi HAMAZAKI, Jung Min SEO, Won Soon PARK
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Patent number: 9358487Abstract: A sealed honeycomb structure which can suppress increase of pressure loss and improve durability favorably is disclosed. A sealed honeycomb structure 100 including includes a honeycomb structure having porous walls dividedly forming inlet cells and outlet cells, an outlet side sealing portion, and an inlet side sealing portion, wherein an opening area of the inlet cell is larger than an opening area of an outlet cell on a cross-section of the honeycomb structure, wherein at least one outlet cell is a reinforced cell where a reinforcing part for reinforcing the outlet cell is formed at at least one corner portion at which the walls on a cross-section vertical to an extending direction of the cell cross each other, and wherein the inlet cell is a non-reinforced cell where the reinforcing part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other.Type: GrantFiled: March 30, 2012Date of Patent: June 7, 2016Assignees: HYUNDAI Motor Company, KIA Motors Corporation, NGK Insulators, LTD.Inventors: Tetsuo Toyoshima, Akira Takahashi, Yuichi Hamazaki, Jung Min Seo, Won Soon Park
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Patent number: 9327222Abstract: A sealed honeycomb structure which can suppress increase of pressure loss and improve durability favorably is disclosed. A sealed honeycomb structure 100 including includes a honeycomb structure having porous walls dividedly forming inlet cells and outlet cells, an outlet side sealing portion, and an inlet side sealing portion, wherein an opening area of the inlet cell is larger than an opening area of an outlet cell on a cross-section of the honeycomb structure, wherein at least one outlet cell is a reinforced cell where a reinforcing part for reinforcing the outlet cell is formed at at least one corner portion at which the walls on a cross-section vertical to an extending direction of the cell cross each other, and wherein the inlet cell is a non-reinforced cell where the reinforcing part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other.Type: GrantFiled: March 30, 2012Date of Patent: May 3, 2016Assignees: HYUNDAI Motor Company, KIA Motors Corporation, NGK Insulators, LTD.Inventors: Tetsuo Toyoshima, Akira Takahashi, Yuichi Hamazaki, Jung Min Seo, Won Soon Park
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Publication number: 20140370235Abstract: A honeycomb structure has porous partition walls defining and forming a plurality of cells communicating between two end faces, and a circumferential wall formed integrally with the partition walls. The cells include partial cells positioned in an outermost circumferential portion of the honeycomb structure and being partially in contact with the circumferential wall, and normal cells other than the partial cells. As to the normal cells, a plugging portion is formed in one end portion of each normal cell, and as to the partial cells, in the partial cells in which the plugging portion to be formed in one end portion thereof, the plugging portion is not formed in at least a part of a partial cell in which an area ratio obtained by Equation (1) is smaller than 80%: the area ratio(%)=an area of the partial cell/an area of the normal cellĂ—100??(1).Type: ApplicationFiled: September 4, 2014Publication date: December 18, 2014Inventors: Akira TAKAHASHI, Yuichi HAMAZAKI, Tetsuo TOYOSHIMA
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Publication number: 20140311112Abstract: A sealed honeycomb structure may include porous walls dividedly forming inlet cells and outlet cells extending from an end surface of an inlet side to an end surface of an outlet side, inlet and outlet side sealing portion 5b, and an inlet side sealing portion, wherein at least one outlet cell is a reinforced cell where a reinforcing part 6 for reinforcing the outlet cell 2b is formed at at least one corner portion 21a at which the walls on a cross-section vertical to an extending direction of the cell cross each other, wherein the inlet cell is a non-reinforced cell where the reinforcing part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other, and wherein the reinforcing parts 6 of the reinforced cells 22 are formed at a section of the honeycomb structure from the end surface of the outlet side in the extending direction of the cell.Type: ApplicationFiled: March 30, 2012Publication date: October 23, 2014Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, NGK INSULATORS, LTD.Inventors: Tetsuo Toyoshima, Akira Takahashi, Yuichi Hamazaki, Jung Min Seo, Won Soon Park
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Publication number: 20140127453Abstract: A sealed honeycomb structure may include porous walls dividedly forming inlet cells and outlet cells extending from an end surface of an inlet side to an end surface of an outlet side, an outlet side sealing portion, and an inlet side sealing portion, wherein at least one outlet cell is a reinforced cell, where a reinforced part for reinforcing the outlet cell is formed at at least one corner portion at which the walls on a cross-section vertical to an extending direction of the cell cross each other, and wherein the inlet cell is a non-reinforced cell where the reinforced part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other.Type: ApplicationFiled: March 30, 2012Publication date: May 8, 2014Applicants: HYUNDAI MOTOR COMPANY, NGK INSULATORS, LTD., KIA MOTORS CORPORATIONInventors: Tetsuo Toyoshima, Akira Takahashi, Yuichi Hamazaki, Jung Min Seo, Won-Soon Park
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Publication number: 20140123611Abstract: A sealed honeycomb structure which can suppress increase of pressure loss and improve durability favorably is disclosed. A sealed honeycomb structure 100 including includes a honeycomb structure having porous walls dividedly forming inlet cells and outlet cells, an outlet side sealing portion, and an inlet side sealing portion, wherein an opening area of the inlet cell is larger than an opening area of an outlet cell on a cross-section of the honeycomb structure, wherein at least one outlet cell is a reinforced cell where a reinforcing part for reinforcing the outlet cell is formed at at least one corner portion at which the walls on a cross-section vertical to an extending direction of the cell cross each other, and wherein the inlet cell is a non-reinforced cell where the reinforcing part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other.Type: ApplicationFiled: March 30, 2012Publication date: May 8, 2014Applicants: HYUNDAI MOTOR COMPANY, NGK INSULATORS, LTD, KIA MOTORS CORPORATIONInventors: Tetsuo Toyoshima, Akira Takahashi, Yuichi Hamazaki, Jung Min Seo, Won Soon Park
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Patent number: 7556665Abstract: A honeycomb structure according to an aspect of the present invention includes a segment part including a plurality of first honeycomb segments having a plurality of through holes passing through along an one axis; and a plurality of second honeycomb segments arranged in the periphery of the segment part having a plurality of through holes passing through along the one axis. A cross sectional area of the first honeycomb segments is smaller than the cross sectional area of the second honeycomb segments in the cross section perpendicular to the one axis.Type: GrantFiled: March 19, 2004Date of Patent: July 7, 2009Assignee: NGK Insulators, Ltd.Inventors: Reiji Matsubara, Tetsuo Toyoshima
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Publication number: 20070125053Abstract: A honeycomb structure according to an aspect of the present invention includes a segment part including a plurality of first honeycomb segments having a plurality of through holes passing through along an one axis; and a plurality of second honeycomb segments arranged in the periphery of the segment part having a plurality of through holes passing through along the one axis. A cross sectional area of the first honeycomb segments is smaller than the cross sectional area of the second honeycomb segments in the cross section perpendicular to the one axis.Type: ApplicationFiled: March 19, 2004Publication date: June 7, 2007Applicant: NGK Insulators, LTD.Inventors: Reiji Matsubara, Tetsuo Toyoshima