Patents by Inventor Yukihiro Yanagawa
Yukihiro Yanagawa 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: 20210278568Abstract: The present invention provides a transparent substrate (10) in which the transparent substrate (10) is formed by fully curing a semi-cured product layer (13s) of an intermediate laminate (1) which includes a base material (11) having light-transmitting properties, an anti-reflective layer (14) provided on at least one surface of the base material (11), and the semi-cured product layer (13s) that is provided between the base material (11) and the anti-reflective layer (14) and is formed of a semi-cured product of an ultraviolet-curable resin composition, a surface of the anti-reflective layer (14) has an irregular uneven structure, and a surface of the uneven structure has an arithmetic mean roughness Ra of 0.01 to 1.00 ?m and am mean unevenness period RSm of 1 to 30 ?m, the anti-reflective layer (14) includes a low refractive index layer (14a) having a refractive index of 1.47 or less and a thickness of 50 to 200 nm at an outermost layer, a Young's modulus of the semi-cured product layer (13s) is 0.1 to 2.Type: ApplicationFiled: November 1, 2017Publication date: September 9, 2021Applicant: Fukuvi Chemical Industry Co., Ltd.Inventors: Yukihiro YANAGAWA, Masahiro SAITO, Shinichi NOMURA, Yuya MATSUZAKI
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Publication number: 20200087482Abstract: Magnetic material powder that can be detected by a metal detector and the like and tungsten powder that can be detected by an X-ray inspection device are dispersed in a polymer material of the molded article.Type: ApplicationFiled: November 20, 2019Publication date: March 19, 2020Inventors: Yukihiro YANAGAWA, Shingo YOSHITOMI
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Publication number: 20150377450Abstract: Provided is a diffusion lens structure for a light source, capable of controlling a diffusion angle. The diffusion lens structure for a light source, capable of controlling a diffusion angle, according to one embodiment of the present invention comprises: a substrate for transmitting light; and a plurality of microlenses arranged on one side of the substrate, wherein the plurality of microlenses have different sizes from each other, the plurality of microlenses are similar to each other, one cross section of the plurality of microlenses takes a spherical or elliptical shape and the height of the plurality of microlenses gradually increases or decreases from the center of the substrate toward the periphery.Type: ApplicationFiled: February 17, 2014Publication date: December 31, 2015Inventors: Dong Pil SUH, Yukihiro YANAGAWA
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Patent number: 8980625Abstract: A cell culture plate has a plurality of flow channels, uneven pattern areas and through holes. The flow channels are formed between the uneven pattern areas, and culture solution flows from the flow channels into the uneven pattern areas or from the uneven pattern areas into the flow channels. The uneven pattern area has uneven patterns that create a cell culture space.Type: GrantFiled: February 24, 2006Date of Patent: March 17, 2015Assignees: National Food Research Institute, Kuraray Co., Ltd.Inventors: Yuji Kikuchi, Hiroko Kikuchi, Taiji Nishi, Takenori Kitani, Yukihiro Yanagawa, Motohiro Fukuda
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Patent number: 7883254Abstract: A light guide plate capable of omitting use of a directional sheet such as a prism sheet as much as possible and ensuring a viewing angle without decreasing brightness in the vertical direction. A light guide plate 1 is used for an edge-light surface illuminant device 10. The light guide plate comprises an emission plane 6, a bottom plane 7 facing the emission plane 6 and an incident end face 8 which enters light emitted from a primary light source 4 provided in a side face between the emission plane 6 and the bottom plane 7. Each of the emission plane 6 and the bottom plane 7 comprises a pattern having convex portions and/or concave portions formed at predetermined pitches. The pattern formed on the emission plane 6 is orthogonal to the incident end face 8 and also the pattern formed on the bottom plane 6 is parallel to the incident end face 8. The emission plane 6 or the bottom plane 7 comprises a trapezoidal convex portion 2 and a trapezoidal concave portion 3 which are alternately arranged.Type: GrantFiled: August 5, 2005Date of Patent: February 8, 2011Assignee: Kuraray Co., Ltd.Inventors: Seiji Kinoshita, Yukihiro Yanagawa
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Publication number: 20100227053Abstract: In a transmission type screen and other optical devices formed by combining optical sheets such as a Fresnel lens sheet and a lenticular lens sheet, the generation of stray light and defective appearance caused by a friction-reducing agent are prevented. In the optical devices such as a transmission type screen 3 formed by combining a plurality of optical sheets such as a Fresnel lens sheet 1 and a lenticular lens sheet 2, a friction-reducing agent 20 is provided on a surface of at least one of the optical sheets at a thickness of 0.3 nm or more to 10 nm or less. A coating applicator 30 for the friction-reducing agent 20 includes: a transfer roller 31; coating liquid-supplying means 32 for supplying the coating liquid 20 to the transfer roller 31; and scraping means 35 for adjusting the thickness of the coating liquid 20 adhering to the transfer roller 31. In the coating liquid 30, the surface roughness Ra (JIS B 0601-1982) of the transfer roller 31 is set to 0.01 to 1 ?m.Type: ApplicationFiled: May 11, 2010Publication date: September 9, 2010Applicant: KURARAY CO., LTD.Inventors: Hiroyuki MONOE, Kouzo Yasuda, Yukihiro Yanagawa, Osamu Kimura, Yoshio Abe, Katashi Saito
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Publication number: 20080130316Abstract: A light guide plate capable of omitting use of a directional sheet such as a prism sheet as much as possible and ensuring a viewing angle without decreasing brightness in the vertical direction. A light guide plate 1 is used for an edge-light surface illuminant device 10. The light guide plate comprises an emission plane 6, a bottom plane 7 facing the emission plane 6 and an incident end face 8 which enters light emitted from a primary light source 4 provided in a side face between the emission plane 6 and the bottom plane 7. Each of the emission plane 6 and the bottom plane 7 comprises a pattern having convex portions and/or concave portions formed at predetermined pitches. The pattern formed on the emission plane 6 is orthogonal to the incident end face 8 and also the pattern formed on the bottom plane 6 is parallel to the incident end face 8. The emission plane 6 or the bottom plane 7 comprises a trapezoidal convex portion 2 and a trapezoidal concave portion 3 which are alternately arranged.Type: ApplicationFiled: August 5, 2005Publication date: June 5, 2008Applicant: Kuraray Co., Ltd.Inventors: Seiji Kinoshita, Yukihiro Yanagawa
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Publication number: 20070263289Abstract: In a transmission type screen and other optical devices formed by combining optical sheets such as a Fresnel lens sheet and a lenticular lens sheet, the generation of stray light and defective appearance caused by a friction-reducing agent are prevented. In the optical devices such as a transmission type screen 3 formed by combining a plurality of optical sheets such as a Fresnel lens sheet 1 and a lenticular lens sheet 2, a friction-reducing agent 20 is provided on a surface of at least one of the optical sheets at a thickness of 0.3 nm or more to 10 nm or less. A coating applicator 30 for the friction-reducing agent 20 includes: a transfer roller 31; coating liquid-supplying means 32 for supplying the coating liquid 20 to the transfer roller 31; and scraping means 35 for adjusting the thickness of the coating liquid 20 adhering to the transfer roller 31. In the coating liquid 30, the surface roughness Ra (JIS B 0601-1982) of the transfer roller 31 is set to 0.01 to 1 ?m.Type: ApplicationFiled: July 27, 2007Publication date: November 15, 2007Applicant: KURARAY CO. LTDInventors: Hiroyuki MONOE, Kouzo YASUDA, Yukihiro YANAGAWA, Osamu KIMURA, Yoshio ABE, Katashi SAITO
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Publication number: 20070202589Abstract: A cell culture plate has a plurality of flow channels, uneven pattern areas and through holes. The flow channels are formed between the uneven pattern areas, and culture solution flows from the flow channels into the uneven pattern areas or from the uneven pattern areas into the flow channels. The uneven pattern area has uneven patterns that create a cell culture space.Type: ApplicationFiled: February 24, 2006Publication date: August 30, 2007Applicants: National Food Research Institute, Kuraray Co., Ltd.Inventors: Yuji Kikuchi, Hiroko Kikuchi, Taiji Nishi, Takenori Kitani, Yukihiro Yanagawa, Motohiro Fukuda
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Patent number: 7211333Abstract: The present invention is to provide a resin-forming mold having high releasability and permitting a production without increasing production costs. The resin-forming mold can be used to produce a resin-molded product having minute uneven portions on a front face thereof, such as a surface light source device-use light guide for a liquid crystal display, an aspherical micro-lens, micro-Fresnel lens and an optical disk. In the stamper (resin-forming mold) 10 provided with an electroformed layer 11 and a conductive film 12 formed on the electroformed layer 11, the front face layer 12c of the conductive film 12 is formed of aluminum and a back face 12d is formed of nickel as an electroconductive metal. In addition, the constituent composition of the aluminum and the nickel continuously changes from the front face 12c toward the back face 12d. The front face 12c may be formed of aluminum and oxygen. The aluminum may combine with the oxygen to form an oxide of aluminum.Type: GrantFiled: May 13, 2004Date of Patent: May 1, 2007Assignee: Kuraray Co., Ltd.Inventors: Yukihiro Yanagawa, Takumi Yagi, Masaru Karai
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Publication number: 20060057847Abstract: The present invention is to provide a resin-forming mold having high releasability and permitting a production without increasing production costs. The resin-forming mold can be used to produce a resin-molded product having minute uneven portions on a front face thereof, such as a surface light source device-use light guide for a liquid crystal display, an aspherical micro-lens, micro-Fresnel lens and an optical disk. In the stamper (resin-forming mold) 10 provided with an electroformed layer 11 and a conductive film 12 formed on the electroformed layer 11, the front face layer 12c of the conductive film 12 is formed of aluminum and a back face 12d is formed of nickel as an electroconductive metal. In addition, the constituent composition of the aluminum and the nickel continuously changes from the front face 12c toward the back face 12d. The front face 12c may be formed of aluminum and oxygen. The aluminum may combine with the oxygen to form an oxide of aluminum.Type: ApplicationFiled: May 13, 2004Publication date: March 16, 2006Applicant: Kuraray Co., Ltd.Inventors: Yukihiro Yanagawa, Takumi Yagi, Masaru Karai
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Publication number: 20050167370Abstract: The resin microchannel substrate has a surface where a recess leading to a fluid supply port and a bank adjacent to the recess and having many micro grooves on a surface are formed. The grooves form microchannels connecting the inside of the recess and the outside of the recess when the surface of the substrate is firmly attached to a flat plate serving as a cover. The width and height of the microchannel are within a range of 1 to 300 ?m, and the width/height ratio of the channel is within a range of 1:20 to 20:1.Type: ApplicationFiled: April 1, 2004Publication date: August 4, 2005Applicants: National Food Research Institute, KURARAY CO. LTD.Inventors: Mitsutoshi Nakajima, Yuji Kikuchi, Taiji Nishi, Takenori Kitani, Yukihiro Yanagawa, Motohiro Fukuda
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Publication number: 20040245669Abstract: A resin molded product according to this invention is produced as follows. Firstly, a resist pattern formation step is performed to form a resist pattern.Type: ApplicationFiled: March 19, 2004Publication date: December 9, 2004Inventors: Taiji Nishi, Shigeru Kawahara, Yukihiro Yanagawa
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Publication number: 20040191704Abstract: A resin molded product production process has a resist pattern formation step including formation of the first resist layer on s substrate, positioning of the substrate and a mask A, exposure of the first resist layer using the mask A, heat-treatment of the first resist layer, formation of the second resist layer on the first resist layer, positioning of the substrate and a mask B, exposure of the second resist layer using the mask B, heat-treatment of the second resist layer, and development of the resist layers, thereby creating a given resist pattern. The production process further has a metal structure formation step of depositing a metal on the substrate in accordance with the resist pattern by plating, and a molded product formation step of forming a resin molded product by using the metal structure as a mold. A resin molded product is thereby produced.Type: ApplicationFiled: March 23, 2004Publication date: September 30, 2004Applicant: KURARAY CO. LTD.Inventors: Taiji Nishi, Takenori Kitani, Yukihiro Yanagawa, Motohiro Fukuda, Rei Nagayama