Patents Assigned to Nissen Chemitec Corporation
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Patent number: 7677353Abstract: In a noise suppression structure of the present invention, a sound absorption sheet is pinched between a flange of a speaker grille and an interior trim. An opening of a space formed by the flange of the speaker grille and a sound guiding tube is covered with the sound absorption sheet.Type: GrantFiled: August 18, 2008Date of Patent: March 16, 2010Assignee: Nissen Chemitec CorporationInventors: Kazuhiro Shinohara, Shiro Kikuchi, Yutaro Kan, Damion Edward Manns
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Publication number: 20090050402Abstract: In a noise suppression structure of the present invention, a sound absorption sheet is pinched between a flange of a speaker grille and an interior trim. An opening of a space formed by the flange of the speaker grille and a sound guiding tube is covered with the sound absorption sheet.Type: ApplicationFiled: August 18, 2008Publication date: February 26, 2009Applicant: NISSEN CHEMITEC CORPORATIONInventors: Kazuhiro Shinohara, Shiro Kikuchi, Yutaro Kan, Damion Edward Manns
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Patent number: 6893587Abstract: An improved method of manufacturing a foam-molded product is provided including the steps of: filling a resin containing a foaming agent into a mold cavity by injection within a time period from a time point just before completion of mold clamping to a time point after the completion of mold clamping; allowing the resin thus filled in the mold cavity to form a skin layer over a surface thereof; thereafter retracting a movable mold to define a predetermined cavity clearance between the movable mold and a stationary mold, so as to cause the foaming agent contained in an uncured portion of the resin to foam; and cooling the resin filled in the cavity mold to form a foam-molded product having a surface forming a tight skin layer and an inside portion in a foamed state.Type: GrantFiled: March 5, 2002Date of Patent: May 17, 2005Assignee: Nissen Chemitec CorporationInventors: Hidekazu Murakoshi, Shingo Tamura, Ichiro Matsuoka
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Patent number: 6767105Abstract: A simple and inexpensive planar lighting device realizing a high luminance is provided, including: a light guide plate having a pair of opposite light entry faces, a light emitting face extending perpendicularly to the light entry faces, a plurality of hemispherical surfaces formed on the light emitting face, and a light non-emitting face opposite to the light emitting face; a light source disposed to extend along each of the light entry faces; a reflector for reflecting light from the light source toward a respective one of the light entry faces; a reflecting plate disposed to extend along the light non-emitting face for reflecting light leaking from the light guide plate toward the light guide plate; and a lens sheet disposed to extend along the light emitting face and formed with a plurality of first ridges extending parallel with the light entry faces on a face thereof opposite to the light emitting face, the first ridges each having a triangular section.Type: GrantFiled: July 26, 2002Date of Patent: July 27, 2004Assignees: Nissen Chemitec Corporation, Nippon Chemitec CorporationInventors: Sumio Nakahashi, Hirozumi Taguchi, Nozomu Bitou, Masaya Suzuki
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Publication number: 20030021123Abstract: A simple and inexpensive planar lighting device realizing a high luminance is provided, including: a light guide plate having a pair of opposite light entry faces, a light emitting face extending perpendicularly to the light entry faces, a plurality of hemispherical surfaces formed on the light emitting face, and a light non-emitting face opposite to the light emitting face; a light source disposed to extend along each of the light entry faces; a reflector for reflecting light from the light source toward a respective one of the light entry faces; a reflecting plate disposed to extend along the light non-emitting face for reflecting light leaking from the light guide plate toward the light guide plate; and a lens sheet disposed to extend along the light emitting face and formed with a plurality of first ridges extending parallel with the light entry faces on a face thereof opposite to the light emitting face, the first ridges each having a triangular section.Type: ApplicationFiled: July 26, 2002Publication date: January 30, 2003Applicant: Nissen Chemitec CorporationInventors: Sumio Nakahashi, Hirozumi Taguchi, Nozomu Bitou, Masaya Suzuki
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Publication number: 20020145214Abstract: An improved method of manufacturing a foam-molded product is provided including the steps of: filling a resin containing a foaming agent into a mold cavity by injection within a time period from a time point just before completion of mold clamping to a time point after the completion of mold clamping; allowing the resin thus filled in the mold cavity to form a skin layer over a surface thereof; thereafter retracting a movable mold to define a predetermined cavity clearance between the movable mold and a stationary mold, so as to cause the foaming agent contained in an uncured portion of the resin to foam; and cooling the resin filled in the cavity mold to form a foam-molded product having a surface forming a tight skin layer and an inside portion in a foamed state.Type: ApplicationFiled: March 5, 2002Publication date: October 10, 2002Applicant: Nissen Chemitec CorporationInventors: Hidekazu Murakoshi, Shingo Tamura, Ichiro Matsuoka
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Patent number: 6280678Abstract: A multilayer molded article with good appearance is produced by supplying a skin material and a melt of a thermoplastic resin between unclosed upper and lower molds and simultaneously molding the thermoplastic resin to form a molded article and laminating the skin material on a part of a surface of the molded article by pressing and cooling the thermoplastic resin in the molds, in which the lower mold has a protruding part at a position where an edge of the skin material is located, the upper mold has a depressed part at a position corresponding to the protruding part of the lower mold, and, during molding, the edge of the skin material is fixed to the lower mold by sucking it through a gap which opens at the root of the protruding part.Type: GrantFiled: April 25, 1994Date of Patent: August 28, 2001Assignees: Sumitomo Chemical Company Limited, Nissen Chemitec CorporationInventors: Takahisa Hara, Masahito Matsumoto, Hiromu Fujita, Yuji Kamiji, Hiromasa Nakatsuka
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Patent number: 5830518Abstract: A device for tucking covering materials into a formed component comprises a support mold for the formed component which supports covering materials such as textiles, on its upper face for insertion into the formed component at a ring-formed tucking groove outward from the outer periphery of the upper face. The device has a tucking mold that is positioned at the outer periphery of the support mold for the formed component, and that has a ring-formed tucking blade which is capable of tucking an edge of the covering materials into the tucking groove of the formed component supported by the support mold for the formed component. An outer support mold for an outer periphery is positioned at the outer periphery of the ring-formed tucking mold, and supports the outer periphery of the formed component supported by the support mold for the formed component.Type: GrantFiled: August 15, 1994Date of Patent: November 3, 1998Assignee: Nissen Chemitec CorporationInventor: Tadayuki Oda
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Patent number: 5783133Abstract: A multilayer molded article made of a first member having a first core layer and a first skin material laminated on the first core layer, and a second member having a second core layer and a second skin material layer laminated on the second core layer, in which the first member is insert laminated in a part of the surface of the second skin material, and which is beautifully finished at a boundary between the first and second skin materials.Type: GrantFiled: March 11, 1994Date of Patent: July 21, 1998Assignees: Sumitomo Chemical Company, Limited, Nissen Chemitec CorporationInventors: Takahisa Hara, Masahito Matsumoto, Tadayuki Oda, Hiromu Fujita, Yuji Kamiji, Hiromasa Nakatsuka
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Patent number: 5277865Abstract: A hollow molded article is produced by supplying a molten resin between a pair of a fixed mold and a movable mold before the fixed mold and the movable mold are closed, inserting at least one gas-supplying pin which is provided on a surface of the fixed mold to form a hollow part in a part of the resin and supplying pressurized gas through said gas-supplying pin before the mold closing is finished, closing the movable mold to fill the resin in a cavity formed by the molds, slightly opening the molds while pressurizing a gas in the resin to expand the hollow part and opening the movable mold to remove a hollow molded article from the molds.Type: GrantFiled: February 7, 1992Date of Patent: January 11, 1994Assignees: Sumitomo Chemical Company, Limited, Nissen Chemitec CorporationInventors: Takahisa Hara, Masahito Matsumoto, Hiromu Fujita, Yuji Kamiji, Hiromasa Nakatsuka