Patents by Inventor Hitoshi Kitagishi
Hitoshi Kitagishi 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: 20160238769Abstract: A resin film according to an embodiment of the present invention includes: a substrate film; and an antistatic layer formed on one side of the substrate film and including a binder resin and a conductive material. The binder resin includes a polyurethane-based resin; the antistatic layer has an arithmetic average surface roughness Ra of 10 nm or more; and the conductive material includes a conductive polymer.Type: ApplicationFiled: April 29, 2016Publication date: August 18, 2016Applicant: NITTO DENKO CORPORATIONInventors: Hitoshi Kitagishi, Satoru Kunikata, Minoru Miyatake
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Patent number: 9411081Abstract: The present invention provides a method of manufacturing a polarizing plate having sufficient heat resistance, without deteriorating the dye-affinity and the like of the polarizing film and without the necessity of transferring or detaching the polarizing film. Provided is a method of manufacturing a polarizing plate (10) that includes a polyester resin base (11) and a polarizing film including a polyvinyl alcohol resin laminated on the polyester resin base. The method includes the steps of: stretching a laminate that includes a polyvinyl alcohol resin layer (12) laminated on the polyester resin base (11); dyeing the polyvinyl alcohol resin layer (12); and crystallizing the polyester resin base (11). The crystallization step is performed after the dyeing step.Type: GrantFiled: December 1, 2011Date of Patent: August 9, 2016Assignee: NITTO DENKO CORPORATIONInventors: Takashi Shimizu, Takashi Kamijo, Hitoshi Kitagishi, Minoru Miyatake, Shusaku Goto, Takeharu Kitagawa, Tomohiro Mori, Nobuyuki Haida
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Patent number: 9340681Abstract: A resin film according to an embodiment of the present invention includes: a substrate film; and an antistatic layer formed on one side of the substrate film and including a binder resin and a conductive material. The binder resin includes a polyurethane-based resin; the antistatic layer has an arithmetic average surface roughness Ra of 10 nm or more; and the conductive material includes a conductive polymer.Type: GrantFiled: August 20, 2013Date of Patent: May 17, 2016Assignee: NITTO DENKO CORPORATIONInventors: Hitoshi Kitagishi, Satoru Kunikata, Minoru Miyatake
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Patent number: 9310523Abstract: A laminate according to an embodiment of the present invention includes: a resin substrate; a polyvinyl alcohol-based resin layer formed on one side of the resin substrate; and an antistatic layer formed on another side of the resin substrate and comprising a binder resin and a conductive material. The binder resin includes a polyurethane-based resin; the antistatic layer has an arithmetic average surface roughness Ra of 10 nm or more; and the conductive material includes a conductive polymer.Type: GrantFiled: August 20, 2013Date of Patent: April 12, 2016Assignee: NITTO DENKO CORPORATIONInventors: Satoru Kunikata, Hitoshi Kitagishi, Minoru Miyatake
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Publication number: 20140065364Abstract: A resin film according to an embodiment of the present invention includes: a substrate film; and an antistatic layer formed on one side of the substrate film and including a binder resin and a conductive material. The binder resin includes a polyurethane-based resin; the antistatic layer has an arithmetic average surface roughness Ra of 10 nm or more; and the conductive material includes a conductive polymer.Type: ApplicationFiled: August 20, 2013Publication date: March 6, 2014Applicant: NITTO DENKO CORPORATIONInventors: Hitoshi Kitagishi, Satoru Kunikata, Minoru Miyatake
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Publication number: 20140065429Abstract: A laminate according to an embodiment of the present invention includes: a resin substrate; a polyvinyl alcohol-based resin layer formed on one side of the resin substrate; and an antistatic layer formed on another side of the resin substrate and comprising a binder resin and a conductive material. The binder resin includes a polyurethane-based resin; the antistatic layer has an arithmetic average surface roughness Ra of 10 nm or more; and the conductive material includes a conductive polymer.Type: ApplicationFiled: August 20, 2013Publication date: March 6, 2014Applicant: NITTO DENKO CORPORATIONInventors: Satoru Kunikata, Hitoshi Kitagishi, Minoru Miyatake
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Publication number: 20130249129Abstract: The present invention provides a method of manufacturing a polarizing plate having sufficient heat resistance, without deteriorating the dye-affinity and the like of the polarizing film and without the necessity of transferring or detaching the polarizing film. Provided is a method of manufacturing a polarizing plate (10) that includes a polyester resin base (11) and a polarizing film including a polyvinyl alcohol resin laminated on the polyester resin base. The method includes the steps of; stretching a laminate that includes a polyvinyl alcohol resin layer (12) laminated on the polyester resin base (11); dyeing the polyvinyl alcohol resin layer (12); and crystallizing the polyester resin base (11). The crystallization step is performed after the dyeing step.Type: ApplicationFiled: December 1, 2011Publication date: September 26, 2013Applicant: NITTO DENKO CORPORATIONInventors: Takashi Shimizu, Takashi Kamijo, Hitoshi Kitagishi, Minoru Miyatake, Shusaku Goto, Takeharu Kitagawa, Tomohiro Mori, Nobuyuki Haida
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Publication number: 20100047484Abstract: Provided is a polarizer protective film of thin type, which has excellent heat resistance and excellent transparency as well as excellent UV-absorbing ability, has good external appearance of a film surface, and can be stably produced by film forming. The polarizer protective film of the present invention includes a resin layer (A) and a resin layer (B1) in the stated order, in which the resin layer (A) is a resin layer containing a (meth) acrylic resin as a main component and contains a UV absorber at a ratio of 0.5 to 10 wt % with respect to a resin component contained in the resin layer (A), and the resin layer (B1) is a resin layer containing a (meth) acrylic resin as a main component and contains a UV absorber at a ratio of more than 0 wt % and 2 wt % or less with respect to a resin component contained in the resin layer (B1).Type: ApplicationFiled: December 5, 2007Publication date: February 25, 2010Applicant: NITTO DENKO CORPORATIONInventors: Hitoshi Kitagishi, Daisuke Hattori, Nobuyuki Haida, Tsutomu Hani, Hiroyuki Takao
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Publication number: 20100033810Abstract: Provided is a polarizer protective film of thin type, which has excellent heat resistance and excellent transparency as well as excellent UV-absorbing ability, has good external appearance of a film surface, and can be stably produced by film forming. The polarizer protective film of the present invention includes a resin layer (A) and a resin layer (B1) in the stated order, in which the resin layer (A) is a resin layer containing a (meth)acrylic resin as a main component and contains a UV absorber at a ratio of 0.5 to 10 wt % with respect to a resin component contained in the resin layer (A), and the resin layer (B1) is a resin layer containing, as a main component, a thermoplastic resin other than a (meth) acrylic resin.Type: ApplicationFiled: December 5, 2007Publication date: February 11, 2010Applicant: NITTO DENKO CORPORATIONInventors: Nobuyuki Haida, Daisuke Hattori, Tsutomu Hani, Hiroyuki Takao, Hitoshi Kitagishi