Patents by Inventor Yudai Yamashita
Yudai Yamashita 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: 20220324759Abstract: A manufacturing method of a sintered body is a manufacturing method of the sintered body which increases a temperature while applying an electric field to a ceramic compact. This method controls a current which flows to the ceramic compact so that a sintering rate becomes constant.Type: ApplicationFiled: July 29, 2020Publication date: October 13, 2022Inventors: Takahisa YAMAMOTO, Tomoharu TOKUNAGA, Yudai YAMASHITA, Tsuyoshi KURACHI, Kimihiro TAGUCHI, Seiya TAKAHASHI, Ryosuke UMEMURA
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Publication number: 20180279606Abstract: An antibacterial and antifungal article comprising a projection structure on a surface of the antibacterial and antifungal article, the projection structure comprising a projection group comprising a plurality of projections being disposed, where an average PAVG of distances P between adjacent projections is 1 ?m or less, wherein the projection structure comprises projections that a height H is 80 nm or more and 1000 nm or less and a ratio (Wt/Wb) of a width Wt at a 97% height of the height to a width Wb at a bottom, is 0.5 or less.Type: ApplicationFiled: April 3, 2017Publication date: October 4, 2018Inventors: Yudai YAMASHITA, Shigeki HATORI, Masato TEZUKA, Mihoko KURASHIGE, Mikio ISHIKAWA, Kaori YAMASHITA
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Publication number: 20130232367Abstract: This electronic apparatus includes a plurality of functional blocks, a storage portion storing and accumulating use states of the plurality of functional blocks, and a control portion. The control portion is configured to perform control of disconnecting power supplied to a functional block whose usage rate is not more than a prescribed usage rate, tending to be disused, of the plurality of functional blocks in a state where power is supplied to at least one functional block.Type: ApplicationFiled: February 28, 2013Publication date: September 5, 2013Applicant: Funai Electric Co., Ltd.Inventors: Akifumi MATSUMURA, Yudai YAMASHITA
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Patent number: 7986389Abstract: An adhesive layer attaining, in a single layer, both adhesiveness permitting direct attachment to a glass plate disposed on the front face of a display device and desired optical filter functions and hardly undergoing the change in spectral characteristics attributable to deterioration in a light absorbing agent, even during long-time use, particularly at high temperature under high humidity, as well as a composite filter using this adhesive layer. The adhesive layer has optical filter functions, containing a block copolymer having at least a specific triblock structure in its molecule and having a weight-average molecular weight of 50,000 or more and a molecular-weight distribution (Mw/Mn) of less than 1.5 and one or more light absorbing agents each having light absorption in a predetermined wavelength region, as well as a composite filter using this adhesive layer.Type: GrantFiled: June 28, 2007Date of Patent: July 26, 2011Assignee: Dai Nippon Printing Co., Ltd.Inventors: Yudai Yamashita, Hideki Imamura, Yuka Hiwatashi, Toshio Yoshihara
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Publication number: 20090279168Abstract: The object of the invention is to provide an adhesive composition attaining, in a single layer, both adhesiveness capable of direct attachment to a glass plate disposed on the front face of a display device and desired optical filter functions and hardly undergoing the change in spectral characteristics attributable to deterioration in a light absorbing agent, even during long-time use, particularly at high temperature under high humidity, as well as an optical filter using this adhesive composition. The object is solved by an optical filter comprising an adhesive layer having optical filter functions, comprising a block copolymer (I) having at least a specific triblock structure in its molecule and having a weight average molecular weight of 50,000 or more and a molecular weight distribution (Mw/Mn) of less than 1.5, a resin (IV) having the glass transition temperature of 60° C. or more and one or more light absorbing agents (III) each having light absorption in a predetermined wavelength region.Type: ApplicationFiled: September 28, 2007Publication date: November 12, 2009Inventors: Yuka Hiwatashi, Toshio Yoshihara, Yudai Yamashita, Hiroyuki Ohtaki
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Patent number: 7569334Abstract: In the present invention, the problem of stability deterioration of the obtained conductive pattern substrate at the time of forming a conductive pattern by an additive method when a layer having reactivity remains on the substrate is to be solved. According to pattern exposure with a photo catalyst substrate 4 having a photo catalyst layer 3 laminated on a second substrate 5 superimposed onto a wettability changeable substrate 1 with a wettability changeable layer 3 laminated on a first substrate 2, a wettability pattern is formed. And furthermore, by adhering a conductive coating solution, or the like, a conductive pattern substrate without containing a photo catalyst can be manufactured.Type: GrantFiled: April 17, 2003Date of Patent: August 4, 2009Assignee: Dai Nippon Printing Co., Ltd.Inventors: Hironori Kobayashi, Yudai Yamashita
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Publication number: 20090116132Abstract: An optical filter including an adhesive layer attaining, in a single layer, both adhesiveness and desired optical filter function and hardly undergoing the change in spectral characteristic attributable to deterioration of a light absorbing agent, even after long-time use, particularly at high temperature under high humidity. The optical filter includes: (A) an acrylic copolymer containing (meth)acrylate having a hydroxyl group as a constituent, not containing a monomer having a carboxyl group and a monomer having an amide group as constituents, and substantially not containing a carboxyl group residue; (B) an isocyanate compound; and (C) one or more light absorbing agents each having light absorption in a predetermined wavelength range.Type: ApplicationFiled: September 27, 2007Publication date: May 7, 2009Inventors: Yuka Hiwatashi, Yudai Yamashita
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Publication number: 20090002620Abstract: An adhesive layer attaining, in a single layer, both adhesiveness permitting direct attachment to a glass plate disposed on the front face of a display device and desired optical filter functions and hardly undergoing the change in spectral characteristics attributable to deterioration in a light absorbing agent, even during long-time use, particularly at high temperature under high humidity, as well as a composite filter using this adhesive layer. The adhesive layer has optical filter functions, containing a block copolymer having at least a specific triblock structure in its molecule and having a weight-average molecular weight of 50,000 or more and a molecular-weight distribution (Mw/Mn) of less than 1.5 and one or more light absorbing agents each having light absorption in a predetermined wavelength region, as well as a composite filter using this adhesive layer.Type: ApplicationFiled: June 28, 2007Publication date: January 1, 2009Inventors: Yudai Yamashita, Hideki Imamura, Yuka Hiwatashi, Toshio Yoshihara
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Patent number: 7445971Abstract: The present invention provides a thin-film transistor that is formed by using a patterning method capable of forming a semiconductor channel layer in sub-micron order and a method for manufacturing thereof that provides a thin-film transistor with a larger area, and suitable for mass production. These objects are achieved by a thin-film transistor formed on a substrate 1 with a finely processed concavoconvex surface 2, in which a source electrode and a drain electrode are formed on adjacent convex portions of the concavoconvex surface 2, with a channel and a gate being formed on a concave area between the convex portions. A gate electrode 5, a gate insulating film 6 and a semiconductor channel layer 7 are laminated in this order on the concave area from the bottom surface of the concave portion toward the top surface.Type: GrantFiled: January 10, 2007Date of Patent: November 4, 2008Assignee: Dai Nippon Printing Co., Ltd.Inventors: Wataru Saito, Yudai Yamashita
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Publication number: 20070117282Abstract: The present invention provides a thin-film transistor that is formed by using a patterning method capable of forming a semiconductor channel layer in sub-micron order and a method for manufacturing thereof that provides a thin-film transistor with a larger area, and suitable for mass production. These objects are achieved by a thin-film transistor formed on a substrate 1 with a finely processed concavoconvex surface 2, in which a source electrode and a drain electrode are formed on adjacent convex portions of the concavoconvex surface 2, with a channel and a gate being formed on a concave area between the convex portions. A gate electrode 5, a gate insulating film 6 and a semiconductor channel layer 7 are laminated in this order on the concave area from the bottom surface of the concave portion toward the top surface.Type: ApplicationFiled: January 10, 2007Publication date: May 24, 2007Inventors: Wataru Saito, Yudai Yamashita
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Patent number: 7166861Abstract: The present invention provides a thin-film transistor that is formed by using a patterning method capable of forming a semiconductor channel layer in sub-micron order and a method for manufacturing thereof that provides a thin-film transistor with a larger area, and suitable for mass production. These objects are achieved by a thin-film transistor formed on a substrate 1 with a finely processed concavoconvex surface 2, in which a source electrode and a drain electrode are formed on adjacent convex portions of the concavoconvex surface 2, with a channel and a gate being formed on a concave area between the convex portions. A gate electrode 5, a gate insulating film 6 and a semiconductor channel layer 7 are laminated in this order on the concave area from the bottom surface of the concave portion toward the top surface.Type: GrantFiled: January 21, 2004Date of Patent: January 23, 2007Assignee: Dai Nippon Printing Co., Ltd.Inventors: Wataru Saito, Yudai Yamashita
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Publication number: 20060231832Abstract: A liquid crystalline organic compound which gives a liquid crystal phase in a temperature range containing at least a room temperature and can exhibit a high charge mobility; an organic semiconductor structure and an organic semiconductor device each having the liquid crystalline organic compound are provided.Type: ApplicationFiled: March 8, 2006Publication date: October 19, 2006Inventors: Keiji Tokunaga, Yudai Yamashita, Jun-ichi Hanna
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Patent number: 6872646Abstract: A conductive pattern is obtained by forming concave-convex on a substrate by using a pattern substrate. A conductive thin layer is formed and then coated with a layer of a photosensitive resin. The photo sensitive resin is exposed and development by using the pattern substrate to bare the conductive thin layer on the convex portion and electrolytic plating. The conductive thin layer and the layer of the photosensitive resin on the concave portion may then be removed.Type: GrantFiled: June 3, 2003Date of Patent: March 29, 2005Assignee: Dia Nippon Printing Co., Ltd.Inventor: Yudai Yamashita
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Publication number: 20040232495Abstract: The present invention provides a thin-film transistor that is formed by using a patterning method capable of forming a semiconductor channel layer in sub-micron order and a method for manufacturing thereof that provides a thin-film transistor with a larger area, and suitable for mass production. These objects are achieved by a thin-film transistor formed on a substrate 1 with a finely processed concavoconvex surface 2, in which a source electrode and a drain electrode are formed on adjacent convex portions of the concavoconvex surface 2, with a channel and a gate being formed on a concave area between the convex portions. A gate electrode 5, a gate insulating film 6 and a semiconductor channel layer 7 are laminated in this order on the concave area from the bottom surface of the concave portion toward the top surface.Type: ApplicationFiled: January 21, 2004Publication date: November 25, 2004Inventors: Wataru Saito, Yudai Yamashita
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Publication number: 20040081921Abstract: It is an major object to ravel out the drawbacks that it is difficult to form a sectional shape of a metal pattern in square and it is also difficult to obtain a constant line width in the conventional full additive method and semi additive method, and to solve the problem that it is difficult to secure dimensional accuracy and positional accuracy at a high level in the above method using conductive ink and a photoresist since this method is carried out by utilizing printing. To attain the above object, in the present invention, a conductive pattern 12a is obtained by forming concavo-convex on a substrate 1 by using a pattern substrate 4, and forming a conductive thin layer 9, then coating with a layer 10 of a photosensitive resin, exposing and developing by using the pattern substrate 4 again to bare a conductive thin layer 9a on the convex portion and carrying out electrolytic plating. The conductive thin layer 9 and the layer of the photosensitive resin on the concave portion may be removed.Type: ApplicationFiled: June 3, 2003Publication date: April 29, 2004Inventor: Yudai Yamashita
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Publication number: 20040043334Abstract: In the present invention, the problem of stability deterioration of the obtained conductive pattern substrate at the time of forming a conductive pattern by an additive method when a layer having reactivity remains on the substrate is to be solved. According to pattern exposure with a photo catalyst substrate 4 having a photo catalyst layer 3 laminated on a second substrate 5 superimposed onto a wettability changeable substrate 1 with a wettability changeable layer 3 laminated on a first substrate 2, a wettability pattern is formed. And furthermore, by adhering a conductive coating solution, or the like, a conductive pattern substrate without containing a photo catalyst can be manufactured.Type: ApplicationFiled: April 17, 2003Publication date: March 4, 2004Inventors: Hironori Kobayashi, Yudai Yamashita
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Patent number: 5932301Abstract: A first information recording medium (shown in Fig. 1(a)) has an electrode layer (13), and an information recording layer (11) provided on the electrode layer by coating a mixed solution of a liquid crystal, a multifunctional ultraviolet curing resin material whose parameter, which is expressed by the average molecular weight divided by the average functional group, is not larger than 160, and a fluorocarbon surface-active agent, and then curing the coating by irradiation with ultraviolet rays, thereby forming an ultraviolet curing resin skin layer having no liquid crystal phase on the outer surface of the information recording layer. A second information recording medium (shown in Fig. 1(b)) further has a patterned electrode layer (13') provided on the information recording layer (11) of the first information recording medium. A third information recording medium (shown in FIG.Type: GrantFiled: September 23, 1997Date of Patent: August 3, 1999Assignee: Dai Nippon Printing Co., Ltd.Inventors: Hironori Kamiyama, Yudai Yamashita
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Patent number: 5693421Abstract: A first information recording medium has an electrode layer, and an information recording layer provided on the electrode layer, a multifunctional ultraviolet curing resin material and a fluorocarbon surface-active agent, and then curing the coating. A second information recording medium further has a patterned electrode layer provided on the information recording layer. A third information recording medium has an electrode layer, a photoconductive layer, an information recording layer including a liquid crystal phase and a resin phase, a resin layer, and an electrode layer, wherein at least one of the electrode layers is transparent. A fourth information recording medium further has an insulating layer provided between the photoconductive layer and the information recording layer in the third information recording medium. A fifth information recording medium has an information recording layer provided on an electrode layer.Type: GrantFiled: January 16, 1996Date of Patent: December 2, 1997Assignee: Dai Nippon Printing Co., Ltd.Inventors: Hironori Kamiyama, Yudai Yamashita
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Patent number: 5677063Abstract: A first information recording medium has an electrode layer, and an information recording layer, a multifunctional ultraviolet curing resin material and a fluorocarbon surface-active agent, and ultraviolet curing resin skin layer having no liquid crystal phase on the outer surface of the information recording layer. A second information recording medium has a patterned electrode layer. A third information recording medium has an electrode layer, a photoconductive layer, an information recording layer including a liquid crystal phase and a resin phase, a resin layer, and an electrode layer, wherein at least one of the electrode layers is transparent. A fourth information recording medium further has an insulating layer provided between the photoconductive layer and the information recording layer in the third information recording medium. A fifth information recording medium has an information recording layer provided on an electrode layer.Type: GrantFiled: January 16, 1996Date of Patent: October 14, 1997Assignee: Dai Nippon Printing Co., Ltd.Inventors: Hironori Kamiyama, Yudai Yamashita
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Patent number: 5270099Abstract: The present invention provides a thermal mimeograph paper having a point-bonded structure and including a porous backing material and a thermoplastic resin film layer laminated on one side thereof through an adhesive, wherein the porous backing material and the thermoplastic resin film are bonded together by dotwise point bonding. This point-bonded structure enables the perforability of the mimeograph paper to be improved.Type: GrantFiled: October 2, 1991Date of Patent: December 14, 1993Assignee: Dai Nippon Insatsu Kabushiki KaishaInventors: Hironori Kamiyama, Kazue Komatsubara, Junichi Hiroi, Mitsuru Tsuchiya, Yozo Kosaka, Shinichi Sakano, Masayuki Ando, Yudai Yamashita