Patents by Inventor Hirofumi Ichikawa
Hirofumi 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: 20160233388Abstract: A light-emitting device includes a package and at least one light-emitting element. The package includes a concave portion which has a bottom surface. The bottom surface includes sides, package distances between opposite sides among the sides, a longest package distance among the package distances, a lower side among the sides, and an upper side among the sides opposite to the lower side. The at least one light-emitting element is arranged on the bottom surface of the concave portion and has a polygonal shape viewed along a front direction. The polygonal shape has light-emitting element distances between vertexes of the polygonal shape and has a longest light-emitting element distance among the light-emitting element distances. The at least one light-emitting element is arranged such that a light-emitting element lateral line along the longest light-emitting element distance is substantially parallel to a package lateral line along the longest package distance.Type: ApplicationFiled: February 4, 2016Publication date: August 11, 2016Applicant: NICHIA CORPORATIONInventors: Hirofumi ICHIKAWA, Motohisa KITANI, Junya NARITA, Keisuke KURASHITA, Takanori AKAISHI
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Publication number: 20160233396Abstract: Provided a light emitting device comprising: a package; a light emitting element disposed in the package; an encapsulation member that covers the light emitting element, the encapsulation member being formed from a resin composition that contains a fluorescent material, a resin, and nanoparticles selected from at least one of the group consisting of aluminum oxide nanoparticles, titanium oxide nanoparticles, zinc oxide nanoparticles, zirconium oxide nanoparticles, and silicon oxide nanoparticles, wherein when the resin composition includes silicon oxide nanoparticles, the content of the silicon oxide nanoparticles is 0.Type: ApplicationFiled: April 19, 2016Publication date: August 11, 2016Applicant: NICHIA CORPORATIONInventors: Akihiro OTA, Seitaro AKAGAWA, Hirofumi ICHIKAWA, Yasunori SHIMIZU
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Patent number: 9397276Abstract: Provided a light emitting device comprising: a package; a light emitting element disposed in the package; an encapsulation member that covers the light emitting element, the encapsulation member being formed from a resin composition that contains a fluorescent material, a resin, and nanoparticles selected from at least one of the group consisting of aluminum oxide nanoparticles, titanium oxide nanoparticles, zinc oxide nanoparticles, zirconium oxide nanoparticles, and silicon oxide nanoparticles, wherein when the resin composition includes silicon oxide nanoparticles, the content of the silicon oxide nanoparticles is 0.Type: GrantFiled: January 20, 2015Date of Patent: July 19, 2016Assignee: NICHIA CORPORATIONInventors: Akihiro Ota, Seitaro Akagawa, Hirofumi Ichikawa, Yasunori Shimizu
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Publication number: 20160111610Abstract: Provided a light emitting device comprising: a package; a light emitting element disposed in the package; an encapsulation member that covers the light emitting element, the encapsulation member being formed from a resin composition that contains a fluorescent material, a resin, and nanoparticles selected from at least one of the group consisting of aluminum oxide nanoparticles, titanium oxide nanoparticles, zinc oxide nanoparticles, zirconium oxide nanoparticles, and silicon oxide nanoparticles, wherein when the resin composition includes silicon oxide nanoparticles, the content of the silicon oxide nanoparticles is 0.Type: ApplicationFiled: January 20, 2015Publication date: April 21, 2016Inventors: Akihiro OTA, Seitaro AKAGAWA, Hirofumi ICHIKAWA, Yasunori SHIMIZU
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Patent number: 9287476Abstract: A method of manufacturing a light emitting device having a resin package which provides an optical reflectivity equal to or more than 70% at a wavelength between 350 nm and 800 nm after thermal curing, and in which a resin part and a lead are formed in a substantially same plane in an outer side surface, includes a step of sandwiching a lead frame provided with a notch part, by means of an upper mold and a lower mold, a step of transfer-molding a thermosetting resin containing a light reflecting material in a mold sandwiched by the upper mold and the lower mold to form a resin-molded body in the lead frame and a step of cutting the resin-molded body and the lead frame along the notch part.Type: GrantFiled: August 16, 2013Date of Patent: March 15, 2016Assignee: NICHIA CORPORATIONInventors: Hirofumi Ichikawa, Masaki Hayashi, Shimpei Sasaoka, Tomohide Miki
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Publication number: 20160056357Abstract: A method of manufacturing a light emitting device having a resin package which provides an optical reflectivity equal to or more than 70% at a wavelength between 350 nm and 800 nm after thermal curing, and in which a resin part and a lead are formed in a substantially same plane in an outer side surface, includes a step of sandwiching a lead frame provided with a notch part, by means of an upper mold and a lower mold, a step of transfer-molding a thermosetting resin containing a light reflecting material in a mold sandwiched by the upper mold and the lower mold to form a resin-molded body in the lead frame and a step of cutting the resin-molded body and the lead frame along the notch part.Type: ApplicationFiled: October 30, 2015Publication date: February 25, 2016Applicant: NICHIA CORPORATIONInventors: Hirofumi ICHIKAWA, Masaki HAYASHI, Shimpei SASAOKA, Tomohide MIKI
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Publication number: 20160049566Abstract: A method of manufacturing a light emitting device having a resin package which provides an optical reflectivity equal to or more than 70% at a wavelength between 350 nm and 800 nm after thermal curing, and in which a resin part and a lead are formed in a substantially same plane in an outer side surface, includes a step of sandwiching a lead frame provided with a notch part, by means of an upper mold and a lower mold, a step of transfer-molding a thermosetting resin containing a light reflecting material in a mold sandwiched by the upper mold and the lower mold to form a resin-molded body in the lead frame and a step of cutting the resin-molded body and the lead frame along the notch part.Type: ApplicationFiled: October 30, 2015Publication date: February 18, 2016Applicant: NICHIA CORPORATIONInventors: Hirofumi ICHIKAWA, Masaki HAYASHI, Shimpei SASAOKA, Tomohide MIKI
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Publication number: 20150162509Abstract: A light emitting device (100) according to the present disclosure includes a base substrate (10) having a recessed portion (15) at its upper surface (11); a light emitting element (20) provided in the recessed portion (15); and a sealing member (30) provided in the recessed portion (15), in which the sealing member (30) contains surface-treated particles (40), or particles (40) coexisting with a dispersing agent, and at least a part of an edge portion of the sealing member (30) is a region located in the vicinity of an edge (17) of the recessed portion, and in which at least one of the particles (40) and aggregates (41) of particles are unevenly distributed.Type: ApplicationFiled: December 4, 2014Publication date: June 11, 2015Applicant: NICHIA CORPORATIONInventors: Masafumi KURAMOTO, Akiko YAMASAKI, Hirofumi ICHIKAWA, Yasunori SHIMIZU, Akihiro OTA
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Publication number: 20140084320Abstract: A method of manufacturing a light emitting device having a resin package which provides an optical reflectivity equal to or more than 70% at a wavelength between 350 nm and 800 nm after thermal curing, and in which a resin part and a lead are formed in a substantially same plane in an outer side surface, includes a step of sandwiching a lead frame provided with a notch part, by means of an upper mold and a lower mold, a step of transfer-molding a thermosetting resin containing a light reflecting material in a mold sandwiched by the upper mold and the lower mold to form a resin-molded body in the lead frame and a step of cutting the resin-molded body and the lead frame along the notch part.Type: ApplicationFiled: August 16, 2013Publication date: March 27, 2014Applicant: NICHIA CORPORATIONInventors: Hirofumi ICHIKAWA, Masaki Hayashi, Shimpei Sasaoka, Tomohide Miki
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Patent number: 8530250Abstract: Provided is a simple and low-cost method for manufacturing, in a short time, many light emitting devices wherein adhesiveness between a leadframe and a thermosetting resin composition is high. The method for manufacturing the light emitting device having a resin package (20) wherein the optical reflectivity at a wavelength of 350-800 nm after thermal curing is 70% or more and a resin section (25) and a lead (22) are formed on substantially a same surface on an outer surface (20b) has: a step of sandwiching a leadframe (21) provided with a notched section (21a) by an upper molding die (61) and a lower molding die (62); a step of transfer-molding a thermosetting resin (23) containing a light-reflecting substance (26), in a molding die (60) sandwiched by the upper molding die (61) and the lower molding die (62) and forming a resin-molded body (24) on the leadframe (21); and a step of cutting the resin-molded body (24) and the leadframe (21) along the notched section (21a).Type: GrantFiled: August 27, 2009Date of Patent: September 10, 2013Assignee: Nichia CorporationInventors: Hirofumi Ichikawa, Masaki Hayashi, Shimpei Sasaoka, Tomohide Miki
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Patent number: 8426879Abstract: An object of the present invention is to provide a light emitting device that shows high adhesion between a sealing member and a package member. A light emitting device 100 of the present invention comprises a package 20 with a recess 60 having a bottom face 20a and a side wall 20b, a light emitting element 10 mounted on the bottom face 20a of the recess 60 of the package 20, and a sealing member 40 filled in the recess 60 of the package 20, with which the light emitting element 10 is coated, wherein the package 20 contains, against the entire monomer component, from 5 to 70% by weight of potassium titanate fibers and/or wollastonite, from 10 to 50% by weight of titanium oxide, and from 15 to 85% by weight of a semiaromatic polyamide containing 20 mol % or more of an aromatic monomer, a part of the side wall 20b of the recess 60 of the package 20 has a thickness of 100 ?m or less, and the sealing member 40 is made of silicone.Type: GrantFiled: September 29, 2006Date of Patent: April 23, 2013Assignee: Nichia CorporationInventors: Motohisa Kitani, Hirofumi Ichikawa, Tomoya Tsukioka, Tomohide Miki, Masafumi Kuramoto
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Publication number: 20110210354Abstract: Provided is a simple and low-cost method for manufacturing, in a short time, many light emitting devices wherein adhesiveness between a leadframe and a thermosetting resin composition is high. The method for manufacturing the light emitting device having a resin package (20) wherein the optical reflectivity at a wavelength of 350-800 nm after thermal curing is 70% or more and a resin section (25) and a lead (22) are formed on substantially a same surface on an outer surface (20b) has: a step of sandwiching a leadframe (21) provided with a notched section (21a) by an upper molding die (61) and a lower molding die (62); a step of transfer-molding a thermosetting resin (23) containing a light-reflecting substance (26), in a molding die (60) sandwiched by the upper molding die (61) and the lower molding die (62) and forming a resin-molded body (24) on the leadframe (21); and a step of cutting the resin-molded body (24) and the leadframe (21) along the notched section (21a).Type: ApplicationFiled: August 27, 2009Publication date: September 1, 2011Inventors: Hirofumi Ichikawa, Masaki Hayashi, Shimpei Sasaoka, Tomohide Miki
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Patent number: 7632424Abstract: A method for inhibiting the discoloration of methylenebisaniline compounds by adding a phosphine of the formula: (H)p—P—(R3)q (wherein R3 is an optionally substituted aryl group or an optionally substituted alkyl group; p is 0, 1 or 2 and q is 1, 2 or 3) to a compound of the formula: (wherein R1 and R2 are each independently a halogen atom or a C1-C6 alkyl group; a and b are each independently an integer of 0 to 4; m and n are each independently an integer of 1 to 5).Type: GrantFiled: December 20, 2004Date of Patent: December 15, 2009Assignee: Ihara Chemical Industry Co., Ltd.Inventors: Mato Nagasawa, Naoya Atsumi, Hirofumi Ichikawa
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Publication number: 20090134411Abstract: An object of the present invention is to provide a light emitting device that shows high adhesion between a sealing member and a package member. A light emitting device 100 of the present invention comprises a package 20 with a recess 60 having a bottom face 20a and a side wall 20b, a light emitting element 10 mounted on the bottom face 20a of the recess 60 of the package 20, and a sealing member 40 filled in the recess 60 of the package 20, with which the light emitting element 10 is coated, wherein the package 20 contains, against the entire monomer component, from 5 to 70% by weight of potassium titanate fibers and/or wollastonite, from 10 to 50% by weight of titanium oxide, and from 15 to 85% by weight of a semiaromatic polyamide containing 20 mol % or more of an aromatic monomer, a part of the side wall 20b of the recess 60 of the package 20 has a thickness of 100 ?m or less, and the sealing member 40 is made of silicone.Type: ApplicationFiled: September 29, 2006Publication date: May 28, 2009Applicant: NICHIA CORPORATIONInventors: Motohisa Kitani, Hirofumi Ichikawa, Tomoya Tsukioka, Tomohide Miki, Masafumi Kuramoto
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Publication number: 20070108416Abstract: The present invention provides a method by which the discoloration of methylenebisaniline compounds can be inhibited even when they are stored at high temperatures for many hours.Type: ApplicationFiled: December 20, 2004Publication date: May 17, 2007Applicant: IHARA CHEMICAL INDUSTRY CO., LTD.Inventors: Mato Nagasawa, Naoya Atsumi, Hirofumi Ichikawa
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Patent number: D690681Type: GrantFiled: June 13, 2012Date of Patent: October 1, 2013Assignee: D&M Holdings, Inc.Inventors: Reiko Ito, Hirofumi Ichikawa
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Patent number: D691105Type: GrantFiled: June 13, 2012Date of Patent: October 8, 2013Assignee: D&M Holdings, Inc.Inventors: Reiko Ito, Hirofumi Ichikawa