Patents by Inventor Mizue Nagata
Mizue Nagata 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: 11090902Abstract: A pressure-sensitive adhesive composition is disclosed making it possible that even when a polarizing film and a transparent conductive layer are laminated over each other to interpose a pressure-sensitive adhesive layer there between, this pressure-sensitive adhesive layer is formed as a pressure-sensitive adhesive layer capable of restraining the transparent conductive layer from being corroded, and further restraining a rise in the surface resistance of the transparent conductive layer, and a deterioration in the external appearance of this layer. Also disclosed are a pressure-sensitive adhesive layer made from the pressure-sensitive adhesive composition, a pressure-sensitive-adhesive-layer-attached polarizing film, and an image display device using the pressure-sensitive-adhesive-layer-attached polarizing film. The pressure-sensitive adhesive composition includes a (meth)acryl-based polymer (A) and a conductive agent (B) having a molecular weight of 380 or more.Type: GrantFiled: March 29, 2016Date of Patent: August 17, 2021Assignee: NITTO DENKO CORPORATIONInventors: Mizue Nagata, Masakuni Fujita, Yuusuke Toyama
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Patent number: 11046045Abstract: A pressure-sensitive adhesive composition is disclosed making it possible that even when a polarizing film and a transparent conductive layer are laminated over each other to interpose a pressure-sensitive adhesive layer there between, this pressure-sensitive adhesive layer is formed as a pressure-sensitive adhesive layer capable of restraining the transparent conductive layer from being corroded, and further restraining a rise in the surface resistance of the transparent conductive layer, and a deterioration in the external appearance of this layer. Also disclosed are a pressure-sensitive adhesive layer made from the pressure-sensitive adhesive composition, a pressure-sensitive-adhesive-layer-attached polarizing film, and an image display device using the pressure-sensitive-adhesive-layer-attached polarizing film. The pressure-sensitive adhesive composition includes a (meth)acryl-based polymer (A) and a conductive agent (B) having a molecular weight of 380 or more.Type: GrantFiled: March 29, 2016Date of Patent: June 29, 2021Assignee: NITTO DENKO CORPORATIONInventors: Mizue Nagata, Masakuni Fujita, Yuusuke Toyama
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Publication number: 20200207058Abstract: A pressure-sensitive adhesive composition is disclosed making it possible that even when a polarizing film and a transparent conductive layer are laminated over each other to interpose a pressure-sensitive adhesive layer there between, this pressure-sensitive adhesive layer is formed as a pressure-sensitive adhesive layer capable of restraining the transparent conductive layer from being corroded, and further restraining a rise in the surface resistance of the transparent conductive layer, and a deterioration in the external appearance of this layer. Also disclosed are a pressure-sensitive adhesive layer made from the pressure-sensitive adhesive composition, a pressure-sensitive-adhesive-layer-attached polarizing film, and an image display device using the pressure-sensitive-adhesive-layer-attached polarizing film. The pressure-sensitive adhesive composition includes a (meth)acryl-based polymer (A) and a conductive agent (B) having a molecular weight of 380 or more.Type: ApplicationFiled: March 10, 2020Publication date: July 2, 2020Applicant: NITTO DENKO CORPORATIONInventors: Mizue Nagata, Masakuni Fujita, Yuusuke Toyama
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Publication number: 20190031815Abstract: A pressure-sensitive adhesive composition for an optical film of the present invention comprises a (meth)acryl-based polymer(A): and a polyether compound (B) having a polyether skeleton and a reactive silyl group represented by formula (1): —SiRaM3-a at at least one terminal, wherein R represents a monovalent organic group having 1 to 20 carbon atoms and optionally having a substituent; M represents a hydroxyl group or a hydrolyzable group; and <a> represents an integer of 1 to 3, provided that in cases where two or more R groups, R groups is the same or different, and in cases where two or more M groups, M groups is the same or different. The pressure-sensitive adhesive composition for an optical film is capable of forming a pressure-sensitive adhesive layer having reworkability that enables an optical film to be easily peeled off from a liquid crystal panel or the like with no adhesive residue and satisfactory durability that prevents a bonded optical film from peeling or lifting.Type: ApplicationFiled: October 1, 2018Publication date: January 31, 2019Applicant: NITTO DENKO CORPORATIONInventors: Yuusuke Toyama, Arata Fujihara, Akiko Sugino, Atsushi Yasui, Masayuki Satake, Mizue Nagata, Tomoyuki Kimura
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Publication number: 20180051188Abstract: A pressure-sensitive adhesive composition is disclosed making it possible that even when a polarizing film and a transparent conductive layer are laminated over each other to interpose a pressure-sensitive adhesive layer there between, this pressure-sensitive adhesive layer is formed as a pressure-sensitive adhesive layer capable of restraining the transparent conductive layer from being corroded, and further restraining a rise in the surface resistance of the transparent conductive layer, and a deterioration in the external appearance of this layer. Also disclosed are a pressure-sensitive adhesive layer made from the pressure-sensitive adhesive composition, a pressure-sensitive-adhesive-layer-attached polarizing film, and an image display device using the pressure-sensitive-adhesive-layer-attached polarizing film. The pressure-sensitive adhesive composition includes a (meth)acryl-based polymer (A) and a conductive agent (B) having a molecular weight of 380 or more.Type: ApplicationFiled: March 29, 2016Publication date: February 22, 2018Applicant: NITTO DENKO CORPORATIONInventors: Mizue Nagata, Masakuni Fujita, Yuusuke Toyama
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Publication number: 20180044556Abstract: A pressure-sensitive adhesive composition for an optical film of the present invention includes a (meth)acrylic polymer(A) that comprises, as monomer units, 67 to 96.99% by weight of alkyl (meth)acrylate(a1), 1 to 20% by weight of benzyl (meth)acrylate(a2), 2 to 10% by weight of a carboxyl group-containing monomer(a3) and 0.01 to 3% by weight of a hydroxyl group-containing monomer(a4), has a weight average molecular weight(Mw) of 1,600,000 or more, and satisfy a weight average molecular weight(Mw)/number average molecular weight(Mn) ratio of 1.8 to 10. The pressure-sensitive adhesive composition can satisfy durability that does not cause peeling, separation at the state in which the optical film was attached, and can form a pressure-sensitive adhesive layer capable of improving display non-uniformity caused by a white display leakage at a peripheral portion.Type: ApplicationFiled: October 10, 2017Publication date: February 15, 2018Applicant: Nitto Denko CorporationInventors: Atsushi Yasui, Yuusuke Toyama, Mizue Nagata, Tomoyuki Kimura, Masayuki Satake
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Patent number: 8980436Abstract: A pressure-sensitive adhesive optical film of the present invention comprises an optical film; and a pressure-sensitive adhesive layer laminated on at least one side of the optical film, wherein the pressure-sensitive adhesive layer is formed from an acrylic pressure-sensitive adhesive comprising a (meth)acrylic polymer comprising 30 to 99.99% by weight of an alkyl(meth)acrylate monomer unit and 0.01 to 15% by weight of a functional group-containing monomer unit, and the (meth)acrylic polymer in the acrylic pressure-sensitive adhesive is crosslinked by electron beam irradiation. The pressure-sensitive adhesive optical film has a high level of reworkability, durability and workability.Type: GrantFiled: October 31, 2008Date of Patent: March 17, 2015Assignee: Nitto Denko CorporationInventors: Yuusuke Toyama, Shinichi Inoue, Mizue Nagata, Toshitsugu Hosokawa
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Patent number: 8962135Abstract: A pressure-sensitive adhesive composition for an optical film of the present invention comprises 100 parts by weight of a (meth)acrylic polymer comprising 45 to 99.99% by weight of an alkyl (meth)acrylate monomer unit and 0.01 to 2% by weight of a tertiary amino group-containing monomer unit; and 0.01 to 2 parts by weight of a peroxide as a crosslinking agent. The pressure-sensitive adhesive composition can form an pressure-sensitive adhesive layer that has satisfactory reworkability such that optical films can be easily peeled from liquid crystal panels with no adhesive residue and also has satisfactory processability such that it can be worked without pressure-sensitive adhesive fouling or dropout.Type: GrantFiled: October 21, 2008Date of Patent: February 24, 2015Assignee: Nitto Denko CorporationInventors: Shinichi Inoue, Yuusuke Toyama, Mizue Nagata, Toshitsugu Hosokawa, Yutaka Moroishi, Fumiko Nakano
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Patent number: 8822835Abstract: A capacitive touch panel sensor in which waviness generated in a film furnished with a transparent electrode pattern can be small. The touch panel sensor according to the present invention includes a first film, a first transparent electrode pattern formed on the first film, a first adhesive layer laminated on the first film so as to cover the first transparent electrode pattern, a second film laminated on the first adhesive layer, a second adhesive layer laminated on the second film, a third film laminated on the second adhesive layer, and a second transparent electrode pattern formed on the third film, wherein Da/Db is 0.5 to 0.9 where a total thickness of the second film and the second adhesive layer is Da, and a distance between the first transparent electrode pattern and the second transparent electrode pattern is Db.Type: GrantFiled: October 18, 2012Date of Patent: September 2, 2014Assignee: Nitto Denko CorporationInventors: Mizue Nagata, Tomotake Nashiki
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Patent number: 8784987Abstract: A pressure-sensitive adhesive layer for optical films. The pressure-sensitive adhesive layer can prevent light leakage caused by stress associated with dimensional change of a component such as an optical film, that has reworkability, and that has satisfactory processability. A pressure-sensitive adhesive optical film produced using the layer is also provided. The pressure-sensitive adhesive layer is prepared with the use of a composition which includes a (meth)acrylic polymer including (a) 34 to 94% by weight of an alkyl (meth)acrylate monomer unit, (b) 5 to 50% by weight of an aromatic ring-containing (meth)acrylate monomer unit, and (c) 0.01 to 0.5% by weight of an amino group-containing (meth)acrylate monomer unit; 0.01 to 2 parts by weight of a peroxide as a crosslinking agent; and 0.01 to 2 parts by weight of a silane coupling agent based on 100 parts by weight of the (meth)acrylic polymer.Type: GrantFiled: November 24, 2010Date of Patent: July 22, 2014Assignee: Nitto Denko CorporationInventors: Yuusuke Toyama, Shinichi Inoue, Mizue Nagata, Toshitsugu Hosokawa
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Patent number: 8709597Abstract: There is provided a pressure-sensitive adhesive composition for optical films. The composition can form a pressure-sensitive adhesive layer that can prevent light leakage caused by stress associated with dimensional change of a component such as an optical film, which include the pressure-sensitive adhesive layer that has reworkability such that it can be easily peeled from a component, and that has satisfactory processability such that it can be processed without pressure-sensitive adhesive stain or dropout, after it is formed on an optical film. A pressure-sensitive adhesive optical film produced using the composition is also provided. The pressure-sensitive adhesive composition includes a (meth)acrylic polymer including (a) 34 to 94% by weight of an alkyl (meth)acrylate monomer unit, (b) 5 to 35% by weight of an aromatic ring-containing (meth)acrylate monomer unit, and (c) 0.01 to 0.5% by weight of an amino group-containing (meth)acrylate monomer unit and further including (d) 0.Type: GrantFiled: November 1, 2010Date of Patent: April 29, 2014Assignee: Nitto Denko CorporationInventors: Yuusuke Toyama, Shinichi Inoue, Mizue Nagata, Toshitsugu Hosokawa
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Publication number: 20120121824Abstract: A pressure-sensitive adhesive composition for an optical film of the present invention comprises a (meth)acryl-based polymer (A): and a polyether compound (B) having a polyether skeleton and a reactive silyl group represented by formula (1): —SiRaM3-a at at least one terminal, wherein R represents a monovalent organic group having 1 to 20 carbon atoms and optionally having a substituent; M represents a hydroxyl group or a hydrolyzable group; and <a> represents an integer of 1 to 3, provided that in cases where two or more R groups, R groups is the same or different, and in cases where two or more M groups, M groups is the same or different. The pressure-sensitive adhesive composition for an optical film is capable of forming a pressure-sensitive adhesive layer having reworkability that enables an optical film to be easily peeled off from a liquid crystal panel or the like with no adhesive residue and satisfactory durability that prevents a bonded optical film from peeling or lifting.Type: ApplicationFiled: April 27, 2010Publication date: May 17, 2012Applicant: NITTO DENKO CORPORATIONInventors: Yuusuke Toyama, Arata Fujihara, Akiko Sugino, Atsushi Yasui, Masayuki Satake, Mizue Nagata, Tomoyuki Kimura
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Publication number: 20110123799Abstract: A pressure-sensitive adhesive composition for an optical film of the present invention includes a (meth)acrylic polymer(A) that comprises, as monomer units, 67 to 96.99% by weight of alkyl (meth)acrylate(a1), 1 to 20% by weight of benzyl (meth)acrylate(a2), 2 to 10% by weight of a carboxyl group-containing monomer(a3) and 0.01 to 3% by weight of a hydroxyl group-containing monomer(a4), has a weight average molecular weight(Mw) of 1,600,000 or more, and satisfy a weight average molecular weight(Mw)/number average molecular weight(Mn) ratio of 1.8 to 10. The pressure-sensitive adhesive composition can satisfy durability that does not cause peeling, separation at the state in which the optical film was attached, and can form a pressure-sensitive adhesive layer capable of improving display non-uniformity caused by a white display leakage at a peripheral portion.Type: ApplicationFiled: November 10, 2010Publication date: May 26, 2011Applicant: NITTO DENKO CORPORATIONInventors: Atsushi Yasui, Yuusuke Toyama, Mizue Nagata, Tomoyuki Kimura, Masayuki Satake
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Publication number: 20110070435Abstract: There is provided a pressure-sensitive adhesive composition for optical films. The composition can form a pressure-sensitive adhesive layer that can prevent light leakage caused by stress associated with dimensional change of a component such as an optical film, that has reworkability such that it can be easily peeled from a component, and that has satisfactory processability such that it can be processed without pressure-sensitive adhesive stain or dropout, after it is formed on an optical film. A pressure-sensitive adhesive optical film produced using the composition is also provided. The pressure-sensitive adhesive composition is prepared to include a (meth)acrylic polymer including (a) 34 to 94% by weight of an alkyl (meth)acrylate monomer unit, (b) 5 to 50% by weight of an aromatic ring-containing (meth)acrylate monomer unit, and (c) 0.01 to 0.5% by weight of an amino group-containing (meth)acrylate monomer unit; 0.01 to 2 parts by weight of a peroxide as a crosslinking agent; and 0.Type: ApplicationFiled: November 24, 2010Publication date: March 24, 2011Applicant: NITTO DENKO CORPORATIONInventors: Yuusuke Toyama, Shinichi Inoue, Mizue Nagata, Toshitsugu Hosokawa
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Publication number: 20110045289Abstract: There is provided a pressure-sensitive adhesive composition for optical films. The composition can form a pressure-sensitive adhesive layer that can prevent light leakage caused by stress associated with dimensional change of a component such as an optical film, which include the pressure-sensitive adhesive layer that has reworkability such that it can be easily peeled from a component, and that has satisfactory processability such that it can be processed without pressure-sensitive adhesive stain or dropout, after it is formed on an optical film. A pressure-sensitive adhesive optical film produced using the composition is also provided. The pressure-sensitive adhesive composition includes a (meth)acrylic polymer including (a) 34 to 94% by weight of an alkyl (meth)acrylate monomer unit, (b) 5 to 35% by weight of an aromatic ring-containing (meth)acrylate monomer unit, and (c) 0.01 to 0.5% by weight of an amino group-containing (meth)acrylate monomer unit and further including (d) 0.Type: ApplicationFiled: November 1, 2010Publication date: February 24, 2011Applicant: NITTO DENKO CORPORATIONInventors: Yuusuke Toyama, Shinichi Inoue, Mizue Nagata, Toshitsugu Hosokawa
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Patent number: 7862888Abstract: There is provided a pressure-sensitive adhesive composition for optical films. The composition can form a pressure-sensitive adhesive layer that can prevent light leakage caused by stress associated with dimensional change of a component such as an optical film, that has reworkability such that it can be easily peeled from a component, and that has satisfactory processability such that it can be processed without pressure-sensitive adhesive stain or dropout, after it is formed on an optical film. A pressure-sensitive adhesive optical film produced using the composition is also provided. The pressure-sensitive adhesive composition is prepared to include a (meth)acrylic polymer including (a) 34 to 94% by weight of an alkyl (meth)acrylate monomer unit, (b) 5 to 50% by weight of an aromatic ring-containing (meth)acrylate monomer unit, and (c) 0.01 to 0.5% by weight of an amino group-containing (meth)acrylate monomer unit; 0.01 to 2 parts by weight of a peroxide as a crosslinking agent; and 0.Type: GrantFiled: March 13, 2009Date of Patent: January 4, 2011Assignee: Nitto Denko CorporationInventors: Yuusuke Toyama, Shinichi Inoue, Mizue Nagata, Toshitsugu Hosokawa
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Patent number: 7846542Abstract: There is provided a pressure-sensitive adhesive composition for optical films. The composition can form a pressure-sensitive adhesive layer that can prevent light leakage caused by stress associated with dimensional change of a component such as an optical film, which include the pressure-sensitive adhesive layer that has reworkability such that it can be easily peeled from a component, and that has satisfactory processability such that it can be processed without pressure-sensitive adhesive stain or dropout, after it is formed on an optical film. A pressure-sensitive adhesive optical film produced using the composition is also provided. The pressure-sensitive adhesive composition includes a (meth)acrylic polymer including (a) 34 to 94% by weight of an alkyl(meth)acrylate monomer unit, (b) 5 to 35% by weight of an aromatic ring-containing (meth)acrylate monomer unit, and (c) 0.01 to 0.5% by weight of an amino group-containing (meth)acrylate monomer unit and further including (d) 0.Type: GrantFiled: February 13, 2009Date of Patent: December 7, 2010Assignee: Nitto Denko CorporationInventors: Yuusuke Toyama, Shinichi Inoue, Mizue Nagata, Toshisugu Hosokawa
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Publication number: 20090233093Abstract: There is provided a pressure-sensitive adhesive composition for optical films. The composition can form a pressure-sensitive adhesive layer that can prevent light leakage caused by stress associated with dimensional change of a component such as an optical film, that has reworkability such that it can be easily peeled from a component, and that has satisfactory processability such that it can be processed without pressure-sensitive adhesive stain or dropout, after it is formed on an optical film. A pressure-sensitive adhesive optical film produced using the composition is also provided. The pressure-sensitive adhesive composition is prepared to include a (meth)acrylic polymer including (a) 34 to 94% by weight of an alkyl (meth)acrylate monomer unit, (b) 5 to 50% by weight of an aromatic ring-containing (meth)acrylate monomer unit, and (c) 0.01 to 0.5% by weight of an amino group-containing (meth)acrylate monomer unit; 0.01 to 2 parts by weight of a peroxide as a crosslinking agent; and 0.Type: ApplicationFiled: March 13, 2009Publication date: September 17, 2009Applicant: NITTO DENKO CORPORATIONInventors: Yuusuke TOYAMA, Shinichi INOUE, Mizue NAGATA, Toshitsugu HOSOKAWA
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Publication number: 20090208741Abstract: There is provided a pressure-sensitive adhesive composition for optical films. The composition can form a pressure-sensitive adhesive layer that can prevent light leakage caused by stress associated with dimensional change of a component such as an optical film, which include the pressure-sensitive adhesive layer that has reworkability such that it can be easily peeled from a component, and that has satisfactory processability such that it can be processed without pressure-sensitive adhesive stain or dropout, after it is formed on an optical film. A pressure-sensitive adhesive optical film produced using the composition is also provided. The pressure-sensitive adhesive composition includes a (meth)acrylic polymer including (a) 34 to 94% by weight of an alkyl(meth)acrylate monomer unit, (b) 5 to 35% by weight of an aromatic ring-containing (meth)acrylate monomer unit, and (c) 0.01 to 0.5% by weight of an amino group-containing (meth)acrylate monomer unit and further including (d) 0.Type: ApplicationFiled: February 13, 2009Publication date: August 20, 2009Applicant: NITTO DENKO CORPORATIONInventors: Yuusuke Toyama, Shinichi Inoue, Mizue Nagata, Toshitsugu Hosokawa
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Patent number: 7576913Abstract: A method for producing a polarizing plate of the invention comprises bonding a transparent protective film (A) and another transparent protective film (B) to one side of a polarizer and to another side of the polarizer, respectively, with an adhesive, wherein the polarizer has a moisture content of 15 to 30% by weight, the transparent protective film (A) is made of the same quality material as the transparent protective film (B), the transparent protective film (A) is thicker than the transparent protective film (B), and the transparent protective film (A) has a moisture content higher than that of the transparent protective film (B). The polarizing plate obtained by the production method can suppress curling.Type: GrantFiled: November 13, 2007Date of Patent: August 18, 2009Assignee: Nitto Denko CorporationInventors: Hiroaki Mizushima, Megumi Katou, Mizue Nagata, Takaaki Ishii, Daisuke Ogomi