Patents by Inventor Takehiko Yamashita
Takehiko 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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Patent number: 10527921Abstract: A transparent screen which displays an image projected from a projector. The transparent screen includes a display panel including a diffusion film which diffuses projection light from the projector, and a tinted film which is disposed to be remoter from the projector than the diffusion film is and has a transmittance which is variable. The transparent screen includes a controller which performs control to decrease the transmittance of the tinted film when an illuminance of a site where the transparent screen is installed is equal to or higher than a first threshold, and performs control to increase the transmittance of the tinted film when the illuminance is equal to or lower than a second threshold lower than the first threshold.Type: GrantFiled: September 20, 2018Date of Patent: January 7, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Takehiko Yamashita
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Publication number: 20190025692Abstract: A transparent screen which displays an image projected from a projector. The transparent screen includes a display panel including a diffusion film which diffuses projection light from the projector, and a tinted film which is disposed to be remoter from the projector than the diffusion film is and has a transmittance which is variable. The transparent screen includes a controller which performs control to decrease the transmittance of the tinted film when an illuminance of a site where the transparent screen is installed is equal to or higher than a first threshold, and performs control to increase the transmittance of the tinted film when the illuminance is equal to or lower than a second threshold lower than the first threshold.Type: ApplicationFiled: September 20, 2018Publication date: January 24, 2019Inventor: Takehiko YAMASHITA
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Patent number: 9891517Abstract: An image projection system includes a translucent screen, a projector that projects image light to the translucent screen, and a controller that controls the projector and the translucent screen. The translucent screen includes a first light control film configured to be switchable between a transmissive state for transmitting incident light therethrough and a diffusion state for diffusing incident light, and a second light control film configured such that the transmittance thereof with respect to incident light can be changed.Type: GrantFiled: February 24, 2017Date of Patent: February 13, 2018Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventor: Takehiko Yamashita
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Publication number: 20170160621Abstract: An image projection system includes a translucent screen, a projector that projects image light to the translucent screen, and a controller that controls the projector and the translucent screen. The translucent screen includes a first light control film configured to be switchable between a transmissive state for transmitting incident light therethrough and a diffusion state for diffusing incident light, and a second light control film configured such that the transmittance thereof with respect to incident light can be changed.Type: ApplicationFiled: February 24, 2017Publication date: June 8, 2017Inventor: Takehiko YAMASHITA
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Patent number: 9447231Abstract: An outer casing for an electric device which is a molded article of a environmental resin wherein poly(lactic acid) and/or a lactic acid copolymer is used, is constituted by molding a flame-retarded resin composition including a resin component containing poly(lactic acid) and/or the lactic acid copolymer as a main ingredient, and silica-magnesia catalyst particles as a flame retardance-imparting component which imparts flame retardance, wherein an organometallic compound is attached to a part of surfaces or the entire surfaces of the silica-magnesia catalyst particles. The organometallic compound is preferably a titanium-based coupling agent or a zirconium-based coupling agent.Type: GrantFiled: October 16, 2012Date of Patent: September 20, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Takehiko Yamashita
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Patent number: 8779049Abstract: An outer casing for an electric device which is a molded article of a environmental resin wherein poly(lactic acid) and/or a lactic acid copolymer is used, is constituted by molding a flame-retarded resin composition including a resin component containing poly(lactic acid) and/or the lactic acid copolymer as a main ingredient, and silica-magnesia catalyst particles as a flame retardance-imparting component which imparts flame retardance, wherein the content of the silica-magnesia catalyst particles is 0.5% by weight or more and 9.0% by weight or less of the total weight of the flame-retarded resin composition. The silica-magnesia catalyst particles preferably have an average particle diameter of 10 ?m or less.Type: GrantFiled: October 11, 2012Date of Patent: July 15, 2014Assignee: Panasonic CorporationInventor: Takehiko Yamashita
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Patent number: 8735486Abstract: An exterior body of an electric appliance is produced by kneading one or more resin components and one or more flame retardancy-imparting components to give a composition, and molding the composition by an injection molding method or a compression molding method. At least one of the flame retardancy-imparting components is a catalytic cracking catalyst and the catalytic cracking catalyst is a silica-magnesia catalyst which is double oxide of silicon oxide and magnesium oxide or which is formed by binding silicon oxide and magnesium oxide. The at least one flame retardancy-imparting component is contained in an amount of 0.5 wt % to 40 wt % of the resin composition. No metal hydroxide and no polyvinyl chloride are contained in the composition.Type: GrantFiled: January 12, 2011Date of Patent: May 27, 2014Assignee: Panasonic CorporationInventors: Takehiko Yamashita, Kunihiko Takeda
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Publication number: 20140015817Abstract: An information display device includes: a display unit including a display panel and a drive circuit portion, arranged on a back side of the display panel, for displaying information on the display panel; and a front panel arranged on a display surface side of the display panel and larger than an outside dimension of the display panel. The front panel has a shape in which curves are formed in corner portions at four corners thereof. A long decoration member having flexibility is arranged in a winding manner so as to cover an entirety of outer peripheral surfaces of four sides of the display unit including an outer peripheral surface of the front panel. The decoration member includes an adhesive layer bonded to the outer peripheral surface of the display unit such that the decoration member is in close contact with the outer peripheral surface of the front panel.Type: ApplicationFiled: July 1, 2013Publication date: January 16, 2014Inventors: Suguru Nakao, Shuji Yamashita, Takehiko Yamashita
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Patent number: 8415001Abstract: A decorative member composing a casing includes: a resin layer (2) having a front surface (2b) and a back surface (2a); and a reflective layer (3) formed on the back surface (2a) of the resin layer (2). The back surface (2a) of the resin layer (2) includes a receding surface (21) formed therein. The receding surface recedes gradually toward the front surface (2b) to change a thickness of the resin layer (2). The receding surface (21) is a concave surface forming a depression that opens while broadening. The back surface (2a) of the resin layer (2) has a reference surface (22) around the receding surface (21), and a portion of the reference surface (22) facing an internal space of the casing is a roughened area (4).Type: GrantFiled: December 25, 2009Date of Patent: April 9, 2013Assignee: Panasonic CorporationInventors: Shuji Yamashita, Suguru Nakao, Takehiko Yamashita, Takashi Nagashima
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Publication number: 20120307463Abstract: The display device has a display module, a metal frame, and an exterior cabinet for accommodating the display module. The display module contains a display panel and a circuit board on which a driver circuit for displaying image on the panel is mounted. The metal frame is disposed in the periphery of the display panel. The exterior cabinet has a decorative panel and a back cover. The decorative panel is disposed on a front side of the display panel so as to cover the frame. The back cover covers a back side of the display module. The decorative panel is made of light transmissible colored resin. The decorative panel has an uneven thickness part, where a thickness changes continuously, at the section disposed on the frame.Type: ApplicationFiled: February 16, 2012Publication date: December 6, 2012Inventors: Shuji YAMASHITA, Takehiko Yamashita
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Patent number: 8227070Abstract: A decorative member (1A) includes: a resin layer (2) having a front surface (2b) and a back surface (2a); and a reflective layer (3) formed on the back surface (2a) of the resin layer (2). The back surface (2a) of the resin layer (2) includes a receding surface (21) formed therein. The receding surface recedes gradually toward the front surface (2b) to change a thickness of the resin layer (2). A pigmented layer (4) configured so that lightness/depth of color thereof changes in accordance with the change in the thickness of the resin layer (2) is provided between the back surface (2a) of the resin layer (2) and the reflective layer (3).Type: GrantFiled: December 25, 2009Date of Patent: July 24, 2012Assignee: Panasonic CorporationInventors: Takashi Nagashima, Suguru Nakao, Takehiko Yamashita, Shuji Yamashita
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Publication number: 20110281075Abstract: A decorative member composing a casing includes: a resin layer (2) having a front surface (2b) and a back surface (2a); and a reflective layer (3) formed on the back surface (2a) of the resin layer (2). The back surface (2a) of the resin layer (2) includes a receding surface (21) formed therein. The receding surface recedes gradually toward the front surface (2b) to change a thickness of the resin layer (2). The receding surface (21) is a concave surface forming a depression that opens while broadening. The back surface (2a) of the resin layer (2) has a reference surface (22) around the receding surface (21), and a portion of the reference surface (22) facing an internal space of the casing is a roughened area (4).Type: ApplicationFiled: November 25, 2009Publication date: November 17, 2011Applicant: PANASONIC CORPORATIONInventors: Shuji Yamashita, Suguru Nakao, Takehiko Yamashita, Takashi Nagashima
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Publication number: 20110281074Abstract: A decorative member (1A) includes: a resin layer (2) having a front surface (2b) and a back surface (2a); and a reflective layer (3) formed on the back surface (2a) of the resin layer (2). The back surface (2a) of the resin layer (2) includes a receding surface (21) formed therein. The receding surface recedes gradually toward the front surface (2b) to change a thickness of the resin layer (2). A pigmented layer (4) configured so that lightness/depth of color thereof changes in accordance with the change in the thickness of the resin layer (2) is provided between the back surface (2a) of the resin layer (2) and the reflective layer (3).Type: ApplicationFiled: December 25, 2009Publication date: November 17, 2011Applicant: PANASONIC CORPORATIONInventors: Takashi Nagashima, Suguru Nakao, Takehiko Yamashita, Shuji Yamashita
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Publication number: 20110262713Abstract: A decorative member (1A) includes: a resin layer (2) having a front surface (2b) and a back surface (2a); and a reflective layer (3) formed on the back surface (2a) of the resin layer (2). The back surface (2a) of the resin layer (2) includes a receding surface (21) formed therein. The receding surface recedes gradually toward the front surface (2b) to change a thickness of the resin layer (2). The receding surface (21) is curved continuously along at least one direction perpendicular to a thickness direction of the resin layer (2) so as to be convex toward the front surface (2b).Type: ApplicationFiled: December 25, 2009Publication date: October 27, 2011Applicant: PANASONIC CORPORATIONInventors: Suguru Nakao, Shuji Yamashita, Takehiko Yamashita, Takashi Nagashima
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Publication number: 20110101566Abstract: A flame-retardant composition is obtained wherein at least one resin selected from a biodegradable resin and a plant-based resin or a PS resin is flame retarded by using a non-halogen-based flame retardancy-imparting component. At least one catalyst selected from a catalyst for purifying hydrocarbon, a catalyst for cracking hydrocarbon, a catalyst for synthesizing hydrocarbon and a catalyst for reforming hydrocarbon is used as a component conferring flame retardancy and this catalyst is kneaded with a biodegradable resin or a plant based resin such as polylactic acid and polybutylene succinate or the PS resin so as to give a resin composition. Further, the resin composition is injection-molded to give an exterior body of electric home appliance. Particularly the silica-magnesia catalyst as a flame-retardant component provides a resin composition with excellent flame-retardant characteristics, as a non-halogen-based material, in the case where polylactic acid or the PS resin is made flame retardant.Type: ApplicationFiled: January 12, 2011Publication date: May 5, 2011Applicant: PANASONIC CORPORATIONInventors: Takehiko Yamashita, Kunihiko Takeda
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Patent number: 7855247Abstract: A particle dispersed resin composition (19) is a composition in which a particle dispersed solvent (17) with and in which functional particulate powder is mixed and dispersed is mixed with a heated and melted resin (16). The amount of the resin (16) is set at a capable amount thereof which the resin (16) impregnates.Type: GrantFiled: June 9, 2006Date of Patent: December 21, 2010Assignee: Panasonic CorporationInventors: Takehiko Yamashita, Takao Hisazumi
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Patent number: 7750069Abstract: At least one resin component which is selected from a biodegradable resin and a plant-based resin, and a flame retardancy-imparting component are kneaded to obtain a resin composition having flame retardancy. This resin composition makes it possible to apply the environment-friendly resin such as the biodegradable resin and the plant-based resin, for example, polylactic acid and polybutylene succinate to exterior bodies of home appliances. Particularly, in the case where polylactic acid is used with the acetylacetonatoiron as the flame-retardant component, a resin composition having excellent flame retardancy can be provided as a non-halogen material.Type: GrantFiled: September 17, 2004Date of Patent: July 6, 2010Assignee: Panasonic CorporationInventors: Takehiko Yamashita, Kunihiko Takeda, Yoshiyuki Tani, Takao Hisazumi
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Publication number: 20090326126Abstract: A resin composition is provided which is made flame retardant using a non-halogen flame retardancy-imparting component, and the resin composition containing HIPS as a resin component is particularly provided. A salt of succinic acid and/or a salt of malic acid or a metal sulfide is used as the flame retardancy-imparting component and this component is kneaded with the resin component such as a polystyrene polymer to produce the resin composition. Further, the resin composition is injection-molded into exterior bodies of home electric appliances. The use of molybdenum disulfide, disodium succinate or dipotassium succinate, as the flame retardancy-imparting component makes it possible to provide the resin composition of excellent flame retardancy as a non-halogen material.Type: ApplicationFiled: July 3, 2007Publication date: December 31, 2009Inventors: Takehiko Yamashita, Kunihiko Takeda
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Publication number: 20080221278Abstract: A particle dispersed resin composition (19) is a composition in which a particle dispersed solvent (17) with and in which functional particulate powder is mixed and dispersed is mixed with a heated and melted resin (16). The amount of the resin (16) is set at a capable amount thereof which the resin (16) impregnates.Type: ApplicationFiled: June 9, 2006Publication date: September 11, 2008Inventors: Takehiko Yamashita, Takao Hisazumi
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Publication number: 20080194739Abstract: A flame-retardant composition is obtained wherein at least one resin selected from a biodegradable resin and a plant-based resin or a PS resin is flame retarded by using a non-halogen-based flame retardancy-imparting component. At least one catalyst selected from a catalyst for purifying hydrocarbon, a catalyst for cracking hydrocarbon, a catalyst for synthesizing hydrocarbon and a catalyst for reforming hydrocarbon is used as a component conferring flame retardancy and this catalyst is kneaded with a biodegradable resin or a plant based resin such as polylactic acid and polybutylene succinate or the PS resin so as to give a resin composition. Further, the resin composition is injection-molded to give an exterior body of electric home appliance. Particularly the silica-magnesia catalyst as a flame-retardant component provides a resin composition with excellent flame-retardant characteristics, as a non-halogen-based material, in the case where polylactic acid or the PS resin is made flame retardant.Type: ApplicationFiled: November 11, 2005Publication date: August 14, 2008Inventors: Takehiko Yamashita, Kunihiko Takeda