Patents by Inventor Takeshi Otsu
Takeshi Otsu 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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Patent number: 9105822Abstract: The present invention provides a material for a molded resin as a material for a semiconductor light-emitting device that can yield a highly durable (light resistance and heat resistance) molded resin and can also improve the LED output through an excellent reflectivity. The present invention also provides an easily moldable material for a molded resin for a semiconductor light-emitting device. The material for a molded resin for a semiconductor light-emitting device is a resin composition, comprising (A) a polyorganosiloxane, (B) a white pigment, and (C) a curing catalyst, wherein the white pigment (B) has the following characteristics (a) and (b): (a) an aspect ratio 1.2 or more and 4.0 or less, and (b) a primary particle diameter 0.1 ?m or more and 2.0 ?m or less.Type: GrantFiled: December 9, 2013Date of Patent: August 11, 2015Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Mayuko Takasu, Takeshi Otsu, Kenichi Takizawa, Yutaka Mori
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Patent number: 8975657Abstract: An object of the present invention is to provide a package from which a metal wiring and the like are difficult to be detached even when heat is generated from a semiconductor light-emitting element. This object is achieved with a package for a semiconductor light-emitting device comprising at least a molded resin containing (A) a SiH-containing polyorganosiloxane and (B) a filler, wherein an amount of SiH existing in the molded resin, after a heat treatment thereof at 200° C. for 10 minutes, is 20 to 65 ?mol/g.Type: GrantFiled: October 31, 2012Date of Patent: March 10, 2015Assignee: Mitsubishi Chemical CorporationInventors: Yukinari Haraguchi, Takeshi Otsu, Yutaka Mori, Tadahiro Katsumoto
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Publication number: 20140091266Abstract: The present invention provides a material for a molded resin as a material for a semiconductor light-emitting device that can yield a highly durable (light resistance and heat resistance) molded resin and can also improve the LED output through an excellent reflectivity. The present invention also provides an easily moldable material for a molded resin for a semiconductor light-emitting device. The material for a molded resin for a semiconductor light-emitting device is a resin composition, comprising (A) a polyorganosiloxane, (B) a white pigment, and (C) a curing catalyst, wherein the white pigment (B) has the following characteristics (a) and (b): (a) an aspect ratio 1.2 or more and 4.0 or less, and (b) a primary particle diameter 0.1 ?m or more and 2.0 ?m or less.Type: ApplicationFiled: December 9, 2013Publication date: April 3, 2014Applicant: Mitsubishi Chemical CorporationInventors: Mayuko TAKASU, Takeshi Otsu, Kenichi Takizawa, Yutaka Mori
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Publication number: 20120286220Abstract: The present invention provides a material for a molded resin as a material for a semiconductor light-emitting device that can yield a highly durable (light resistance and heat resistance) molded resin and can also improve the LED output through an excellent reflectivity. The present invention also provides an easily moldable material for a molded resin for a semiconductor light-emitting device. The material for a molded resin for a semiconductor light-emitting device is a resin composition comprising (A) a polyorganosiloxane, (B) a white pigment, and (C) a curing catalyst, wherein the white pigment (B) has the following characteristics (a) and (b); (a) an aspect ratio 1.2 or more and 4.0 or less, and (b) a primary particle diameter 0.1 ?m or more and 2.0 ?m or less.Type: ApplicationFiled: June 21, 2012Publication date: November 15, 2012Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Mayuko TAKASU, Takeshi Otsu, Kenichi Takizawa, Yutaka Mori
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Patent number: 8119216Abstract: An optical information recording medium has at least an optical reflective layer, an optical recording layer, an protective layer, and an optical transparency layer formed in that order on the main surface of a disc-shaped substrate. An area in which the protective layer is formed is made wider than an area in which the reflective layer is formed, and made narrower than an area in which the optical transparency layer is formed.Type: GrantFiled: December 11, 2008Date of Patent: February 21, 2012Assignee: Taiyo Yuden Co., Ltd.Inventors: Fumi Hara, Takeshi Otsu, Isao Matsuda, Shingo Katoh, Masashi Satoh
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Patent number: 8025947Abstract: An optical information recording medium has a substrate, and an optical reflection layer, an optical recording layer containing an organic dye, an interlayer, and a cover layer formed in this order on the substrate. The interlayer contains a sputtered Nb2O5—Al2O3-based composite oxide having an Nb2O5 content of more than 50 mol % and less than 60 mol %.Type: GrantFiled: October 1, 2008Date of Patent: September 27, 2011Assignee: Taiyo Yuden Co., LtdInventors: Fumi Hara, Takeshi Otsu, Isao Matsuda, Shingo Katoh, Masashi Satoh
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Patent number: 8018822Abstract: An optical information recording medium includes an optical disk body including a light-transmitting substrate, a recording layer provided on a main surface of the light-transmitting substrate over a region in which pre-grooves are formed and a portion of a region in which dummy grooves are formed, and a reflecting layer provided over the recording layer and a region of the light-transmitting substrate in which the recording layer is not provided; and an ink receiving layer provided on the label surface side of the optical disc body. The dummy grooves provided in at least a portion of the region in which the dye material is not applied have a pitch larger than that of the pre-grooves, are shallower than that of the pre-grooves, or have half-width less than that of the pre-grooves.Type: GrantFiled: October 12, 2007Date of Patent: September 13, 2011Assignee: Taiyo Yuden Co., LtdInventors: Takeshi Otsu, Fumi Hara, Shinichi Kojo, Atsuo Shimizu, Motomitsu Hagiwara
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Patent number: 8014262Abstract: An optical information recording medium includes a substrate having a through-hole provided at the central portion thereof and a guiding groove provided on a surface at the light-incident side; a reflective layer provided on the surface of the substrate having the guiding groove; a recording layer provided on the reflective layer and made of an organic substance containing a dye; and a light-transmissive cover layer provided on the recording layer, wherein the cover layer is made of a curable resin, and a modulus of elasticity of at least a portion of the cover layer facing the recording layer is in the range of about 34 MPa to about 96 MPa at 25° C.Type: GrantFiled: April 16, 2008Date of Patent: September 6, 2011Assignee: Taiyo Yuden Co., Ltd.Inventors: Fumi Hara, Takeshi Otsu, Masashi Satoh, Shingo Katoh, Isao Matsuda
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Patent number: 7981494Abstract: In a write-once optical information recording medium including a substrate, a groove-shaped track such as a guiding groove, and an optical recording layer containing an organic dye material and disposed on the guiding groove, wherein information is recorded by irradiating a short-wavelength laser beam from a surface of the optical recording layer opposite the substrate, and the information can be reproduced by reading a change in the reflected light of a short-wavelength laser beam after the information recording, an unrecorded portion of the optical recording layer has a lower reflectance than a pit portion formed after recording to a portion of the optical recording layer, the optical recording layer has a refractive index n in the range of about 1.2 to about 2.1 before recording and an extinction coefficient k in the range of about 0.01 to about 0.7 before recording, and n+k is in the range of about 1.4 to about 2.1.Type: GrantFiled: March 19, 2008Date of Patent: July 19, 2011Assignee: Taiyo Yuden Co., Ltd.Inventors: Takuo Kodaira, Isao Matsuda, Takeshi Otsu, Fumi Hara
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Patent number: 7867595Abstract: An optical information recording medium is provided having a superior jitter property even when an organic substance is used for a recording layer. The optical information recording medium has a substrate having a penetrating hole in a central portion thereof and a spiral pre-groove provided in one surface of the substrate, a reflection layer provided on the surface of the substrate in which the pre-groove is provided, a recording layer which is provided on the reflection layer and which is composed of an organic substance including a dye, and a light transmissive cover layer provided on the recording layer. In the optical information recording medium, the cover layer has an elastic modulus of 40 MPa or less at 25° C. in an interface region facing the recording layer.Type: GrantFiled: November 14, 2007Date of Patent: January 11, 2011Assignee: Taiyo Yuden Co., Ltd.Inventors: Takeshi Otsu, Akimasa Miyata, Motomitsu Hagiwara, Isao Matsuda, Fumi Hara, Shingo Kato, Takuo Kodaira
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Patent number: 7835257Abstract: An optical information recording medium includes a disk-like substrate having a hole in a central portion thereof, and a light-reflective layer, a dye recording layer containing an organic dye, an intermediate layer composed of an inorganic substance, and a light-transmissive layer composed of a resin disposed in that order on one principal surface of the substrate, in which information is recorded/reproduced by irradiation of laser light from the light-transmissive layer side. In the optical information recording medium, the light-transmissive layer covers a surface of the intermediate layer from an inner peripheral edge of the intermediate layer to an outer peripheral edge of the intermediate layer, and a vicinity of an outer peripheral edge of the light-transmissive layer is in contact with the substrate in an annular region extending around an outer peripheral side of the substrate.Type: GrantFiled: September 24, 2008Date of Patent: November 16, 2010Assignee: Taiyo Yuden Co., Ltd.Inventors: Motomitsu Hagiwara, Takeshi Otsu, Akimasa Miyata, Yuji Tomizawa
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Patent number: 7830778Abstract: An optical information recording medium having a disk-shaped substrate formed with spiral grooves on one main surface, and having an optical reflection layer formed with grooves at the surface corresponding to the grooves of the substrate for reflecting a laser beam, an optical recording layer, a protective layer, and an optical transparency layer in this order on the main surface thereof. The optical information recording medium has a main information area and a sub-information area to the inner circumferential side thereof, in which the track pitch TrB of the grooves in the sub-information area is about 0.32 ?m or less, and the depth D of the grooves and the half-band width W of the grooves satisfy a relation represented by: W?2D+70, whereby the difference between the reflectivity at the land surface and the reflectivity at the groove surface in the sub-information area can be restricted to less than 30%, thereby preventing occurrence of mis-decipherment for BCA marks.Type: GrantFiled: February 8, 2008Date of Patent: November 9, 2010Assignee: Taiyo Yuden Co., Ltd.Inventors: Isao Matsuda, Fumi Hara, Takeshi Otsu, Motomitsu Hagiwara, Akimasa Miyata
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Publication number: 20090220770Abstract: The invention can provide a high-refractive-index resin composition containing particles, more particularly, a resin composition having a high refractive index and usable in optical applications including coatings and lenses. The high-refractive-index resin composition of the invention is a high-refractive-index resin composition obtained by polymerizing a polymerizable composition containing particles coated with a surface-treating agent and having an average particle diameter of 10 nm or smaller and a polymerizable monomer, wherein the content of the particles excluding the surface-treating agent, X (% by mass), and the refractive index of the high-refractive-index resin composition, Y (n23d), have a relationship between these which is represented by the general formula 1: Y?0.0035X+1.52 (wherein 20?X?60 and Y?2.0).Type: ApplicationFiled: April 25, 2007Publication date: September 3, 2009Applicants: MITSUBISHI CHEMICAL CORPORATION, Sony CorporationInventors: Nobuhiko Ueno, Takeshi Otsu, Katsuya Amako
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Publication number: 20090180374Abstract: An optical information recording medium contains at least an optical reflective layer, an optical recording layer, a protective layer, and an optical transparency layer formed in this order on a main surface of a substrate, and has a main-information area and a sub-information area that contains an optically readable mark. The mark is constituted by removing at least the optical reflective layer in a bar cord pattern and then forming a next layer in the order over the bar cord-patterned layer.Type: ApplicationFiled: December 11, 2008Publication date: July 16, 2009Applicant: Taiyo Yuden Co., Ltd.Inventors: Fumi Hara, Takeshi Otsu, Isao Matsuda, Shingo Katoh, Masashi Satoh, Yutaka Shibata
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Publication number: 20090154332Abstract: An optical information recording medium has at least an optical reflective layer, an optical recording layer, an protective layer, and an optical transparency layer formed in that order on the main surface of a disc-shaped substrate. An area in which the protective layer is formed is made wider than an area in which the reflective layer is formed, and made narrower than an area in which the optical transparency layer is formed.Type: ApplicationFiled: December 11, 2008Publication date: June 18, 2009Applicant: Taiyo Yuden Co., Ltd.Inventors: Fumi Hara, Takeshi Otsu, Isao Matsuda, Shingo Katoh, Masashi Satoh
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Publication number: 20090116369Abstract: An optical information recording medium includes a disk-like substrate having a hole in a central portion thereof, and a light-reflective layer, a dye recording layer containing an organic dye, an intermediate layer composed of an inorganic substance, and a light-transmissive layer composed of a resin disposed in that order on one principal surface of the substrate, in which information is recorded/reproduced by irradiation of laser light from the light-transmissive layer side. In the optical information recording medium, the light-transmissive layer covers a surface of the intermediate layer from an inner peripheral edge of the intermediate layer to an outer peripheral edge of the intermediate layer, and a vicinity of an outer peripheral edge of the light-transmissive layer is in contact with the substrate in an annular region extending around an outer peripheral side of the substrate.Type: ApplicationFiled: September 24, 2008Publication date: May 7, 2009Applicant: Taiyo Yuden Co., LtdInventors: Motomitsu Hagiwara, Takeshi Otsu, Akimasa Miyata, Yuji Tomizawa
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Publication number: 20090092783Abstract: An optical information recording medium has a substrate, and an optical reflection layer, an optical recording layer containing an organic dye, an interlayer, and a cover layer formed in this order on the substrate. The interlayer contains a sputtered Nb2O5—Al203-based composite oxide having an Nb2O5 content of more than 50 mol % and less than 60 mol %.Type: ApplicationFiled: October 1, 2008Publication date: April 9, 2009Applicant: TAIYO YUDEN CO., LTD.Inventors: Fumi HARA, Takeshi OTSU, Isao MATSUDA, Shingo KATOH, Masashi SATOH
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Publication number: 20090010147Abstract: A stamper is mounted to a surface of at least one of a stationary-side die and a movable-side die. A transfer surface of the stamper is positioned substantially flush with a first surface of an inner peripheral holding member for holding the stamper near an inner periphery thereof which first surface is positioned adjacent to the transfer surface of the stamper. A first distal end of the inner peripheral holding member, which is positioned to face the cavity, and a second distal end of a die member, which is positioned to face the cavity, the die member being disposed adjacent to the inner peripheral holding member, are both projected more into the cavity than the transfer surface of the stamper. A molding burr can be suppressed from projecting upward from the vicinity of an inner peripheral edge of the substrate surface substantially flush with the transfer portion.Type: ApplicationFiled: June 26, 2008Publication date: January 8, 2009Applicant: Taiyo Yuden Co., Ltd.Inventors: Motomitsu Hagiwara, Takeshi Otsu, Akimasa Miyata, Kuniyuki Aihara
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Publication number: 20080298203Abstract: Proposed are a method of fabricating an optical information recording medium that can prevent the degradation of the appearance caused by a hardening resin entering between a center cap and a substrate due to capillary action, and an optical information recording medium using a substrate for implementing the method. The optical information recording medium has a reflective layer and a recording layer on a first surface of a circular substrate having a through hole in a center part, and an optically transparent cover layer is provided on the recording layer. The substrate has an inner diameter of an area near an opening of the through hole on the first surface greater than that of another portion of the through hole. A step part is formed on the surface on the light incident side, that is, formed around the through hole on the surface on which the reflective layer and the recording layer are formed.Type: ApplicationFiled: January 29, 2008Publication date: December 4, 2008Applicant: Taiyo Yuden Co., Ltd.Inventors: Motomitsu Hagiwara, Takeshi Otsu, Akimasa Miyata
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Publication number: 20080291811Abstract: An optical information recording medium that has satisfactory main information recording characteristics and in which burst cutting area (BCA) marks can be formed without damaging a protective layer or a light-transmitting layer is provided. In forming the light-reflecting layer by vapor deposition, sputtering, ion-plating, or the like, part of the region is masked so as to make the thickness and/or material of the light-reflecting layer in a main information recording region where main information is recorded different from that of the light-reflecting layer in a BCA equivalent region. As a result, burst cutting of the light-reflecting layer in the BCA equivalent region becomes easier than in the main information recording region.Type: ApplicationFiled: May 20, 2008Publication date: November 27, 2008Applicant: Taiyo Yuden Co., Ltd.Inventors: Fumi Hara, Takeshi Otsu, Isao Matsuda, Shingo Katoh, Masashi Satoh