Patents by Inventor Yutaka Ohmori
Yutaka Ohmori 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).
-
Publication number: 20150007935Abstract: Provided is a method for producing an infrared reflective substrate including a reflective layer and a protective layer that are layered with each other. The method includes: a step of layering the reflective layer with the protective layer containing a polymer that is cross-linkable by electron beam irradiation; and a step of subjecting the protective layer to electron beam irradiation.Type: ApplicationFiled: February 15, 2013Publication date: January 8, 2015Applicant: NITTO DENKO CORPORATIONInventors: Junichi Fujisawa, Motoko Kawasaki, Yutaka Ohmori
-
Patent number: 8911837Abstract: The retardation film of the present invention contains a thermoplastic polymer having at least a side chain component (A) oriented in a direction substantially orthogonal to a slow axis, and the absorption edge wavelength (?cut-off) of the side chain component (A) is 330 nm or more, and an in-plane retardation value (Re[450]) at a wavelength of 450 nm is smaller than that (Re[650]) at a wavelength of 650 nm. In the above-mentioned retardation film, the difference (?Re650-450=Re[650]?Re[450]) between the in-plane retardation value (Re[650]) at a wavelength of 650 nm and the in-plane retardation value (Re[450]) at a wavelength of 450 nm is preferably 10 nm or more. The retardation film of the present invention exhibits optical characteristics in which the in-plane birefringence is large and the difference between a retardation value on the short wavelength side and a retardation value on the long wavelength side is large.Type: GrantFiled: September 5, 2007Date of Patent: December 16, 2014Assignee: Nitto Denko CorporationInventors: Yutaka Ohmori, Takahisa Konishi, Hisae Sugihara, Miyuki Kurogi, Toshiyuki Iida
-
Publication number: 20140327959Abstract: To provide an infrared reflective film including a reflective layer and a protective layer laminated sequentially on one surface of a substrate, wherein the protective layer is a layer including a polymer including at least any two or more repeating units of the repeating units A, B and C in the following chemical formula I, and the indentation hardness of the protective layer is 1.2 MPa or more.Type: ApplicationFiled: December 13, 2012Publication date: November 6, 2014Applicant: NITTO DENKO CORPORATIONInventors: Motoko Kawasaki, Junichi Fujisawa, Masahiko Watanabe, Yutaka Ohmori
-
Publication number: 20140240822Abstract: An infrared-reflective film includes a substrate film composed of a polyolefin film or a polycycloolefin film. The substrate film has two main surfaces and an infrared-reflective layer is formed on one main surface and the other main surface faces air, nitrogen gas, inert gas or a vacuum. A surface of the infrared-reflective layer faces either of air, nitrogen gas, inert gas or a vacuum.Type: ApplicationFiled: July 24, 2012Publication date: August 28, 2014Applicant: NITTO DENKO CORPORATIONInventors: Yutaka Ohmori, Hisashi Tsuda, Motoko Kawasaki
-
Patent number: 8741399Abstract: The birefringent film of the present invention contains an aromatic polyester having a repeating unit represented by the following general formula (1). In the general formula (1), A(s), B(s), C(s), and D(s) are each independently represent a group selected from a halogeno group, an alkyl group which has 1 to 6 carbon atoms, and an aryl group. Also, a and b each represent an integer of 0 to 4, and c and d each represent an integer of 0 to 3. R1 represents a hydrogen atom, or an alkyl group which has 1 to 10 carbon atoms. R2 represents an alkyl group which has 2 to 10 carbon atoms. R3 to R6 each independently represent a group or atom selected from a hydrogen atom, a halogeno group, an alkyl group which has 1 to 6 carbon atoms, and an aryl group. Furthermore, l and m each represent an integer of 2 or more.Type: GrantFiled: March 25, 2009Date of Patent: June 3, 2014Assignee: Nitto Denko CorporationInventors: Tomoyuki Hirayama, Toshiyuki Iida, Yutaka Ohmori, Satoru Suzuki, Miyuki Kurogi, Hisae Shimizu
-
Patent number: 8722842Abstract: The present invention provides an optical film exhibiting wavelength dispersion such that a retardation value is smaller on the shorter wavelength side, and capable of being also formed comparatively thinly. The optical film of the present invention is an optical film including a polyimide-based polymer represented by the following general formula (I). In the formula (I), m is 40% by mol or more and 100% by mol or less. R1 and R2 each independently denote a substituent having a carbon-carbon double bond or a triple bond. A, A?, B, B?, E, G, and H each denote a substituent, and small letters corresponding to these alphabets denote substitution number thereof. X and Y each independently denote bond part such as a covalent bond. The substituents having a carbon-carbon double bond or a triple bond represented by R1 and R2 are a substituted or unsubstituted aryl group, a substituted or unsubstituted vinyl group, and a substituted or unsubstituted ethynyl group.Type: GrantFiled: April 3, 2008Date of Patent: May 13, 2014Assignee: Nitto Denko CorporationInventors: Toshiyuki Iida, Yutaka Ohmori, Miyuki Kurogi
-
Publication number: 20140098414Abstract: An infrared reflective film comprises: an infrared reflective layer; a transparent film; and an adhesion layer. The infrared reflective layer has two main surfaces. The transparent film is formed of a polycycloolefin layer and supports one main surface of the infrared reflective layer. The adhesion layer is formed on the other main surface of the infrared reflective layer.Type: ApplicationFiled: October 28, 2011Publication date: April 10, 2014Applicant: NITTO DENKO CORPORATIONInventors: Yutaka Ohmori, Motoko Kawasaki, Hisashi Tsuda
-
Patent number: 8609258Abstract: A light emitting composition includes a light-emitting iridium-functionalized nanoparticle, such as a compound of formula (I). The compound of formula (I) further comprises at least one host attached to the core. A light emitting device includes an anode, a cathode, and a layer containing such a light-emitting composition is also disclosed. In an embodiment, the light emitting device can emit white light.Type: GrantFiled: April 30, 2012Date of Patent: December 17, 2013Assignee: Nitto Denko CorporationInventors: Hyun Sik Chae, Yutaka Ohmori, Jesse Froelich, Sheng Li, Amane Mochizuki
-
Patent number: 8593599Abstract: [Object] The present invention provides a liquid crystal panel with which a display with extremely small change in color depending on a viewing direction can be realized, and a liquid crystal display including the same. [Solution to Problem] The liquid crystal panel includes: a first polarizer 30; a second polarizer 50; a first optical compensation layer 60; a second optical compensation layer 70; and a liquid crystal cell 40. The first polarizer 30 is arranged on one surface of the liquid crystal cell 40. The second polarizer 50 is arranged on the other surface of the liquid crystal cell 40. The first optical compensation layer 60 is arranged between the liquid crystal cell 40 and the first polarizer 30. The second optical compensation layer 70 is arranged between the liquid crystal cell 40 and the second polarizer 50. The first optical compensation layer 60 satisfies the following mathematical formulae (1) and (2).Type: GrantFiled: August 13, 2010Date of Patent: November 26, 2013Assignee: Nitto Denko CorporationInventors: Toshiyuki Iida, Tomoyuki Hirayama, Yutaka Ohmori, Miyuki Kurogi, Hisae Shimizu, Junichi Nagase
-
Patent number: 8568893Abstract: An ester-based polymer to be used in the present invention has at least a repeating unit represented with the general formula (I). A and B are substituents substituted on a stilbene group. R1 is a hydrogen atom, a linear or branched alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group. R2 is a linear or branched alkyl group having 2 to 10 carbon atoms. R3 to R6 each independently represents a hydrogen atom, a halogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group. n is an integer of 2 or more.Type: GrantFiled: January 27, 2009Date of Patent: October 29, 2013Assignee: Nitto Denko CorporationInventors: Tomoyuki Hirayama, Toshiyuki Iida, Yutaka Ohmori, Satoru Suzuki, Miyuki Kurogi, Hisae Shimizu
-
Patent number: 8518552Abstract: The invention relates to an optical film containing polymers having different repeating units, and methods for production thereof. Further, the invention also relates to an optical laminate, a polarizing plate, and an image display device each using the optical film. The optical film of the invention advantageously has not only high solubility in solvents but also a high level of transparency since the polymers used in the optical film are compatible with each other. Further, wavelength dispersion of the birefringence of the optical film can be controlled by merely changing a ratio of polymers.Type: GrantFiled: March 11, 2010Date of Patent: August 27, 2013Assignee: Nitto Denko CorporationInventors: Toshiyuki Iida, Tomoyuki Hirayama, Yutaka Ohmori, Miyuki Kurogi, Hisae Shimizu, Junichi Nagase
-
Patent number: 8445079Abstract: An object of the present invention is to provide an optical film exhibiting a preferable wavelength dispersion and capable of being formed comparatively thinly. The present invention is an optical film containing the repeating unit represented by the following general formula (II). In the formula (II), A, A?, B, and B? each denote a substituent, a, a?, b, and b? denote the number of substituents of the corresponding A, A?, B, and B?. A, A?, B and B? each independently denote a halogen or an alkyl group having 1 to 4 carbon atoms. R1 and R2 denote a halogen, an alkyl group having 1 to 10 carbon atoms, and the like. X denotes —CO—, —SO2—, and the like.Type: GrantFiled: April 9, 2008Date of Patent: May 21, 2013Assignee: Nitto Denko CorporationInventors: Toshiyuki Iida, Yutaka Ohmori, Miyuki Kurogi
-
Publication number: 20120305895Abstract: A light emitting composition includes a light-emitting iridium-functionalized nanoparticle, such as a compound of formula (I). The compound of formula (I) further comprises at least one host attached to the core. A light emitting device includes an anode, a cathode, and a layer containing such a light-emitting composition is also disclosed. In an embodiment, the light emitting device can emit white light.Type: ApplicationFiled: April 30, 2012Publication date: December 6, 2012Inventors: Hyun Sik Chae, Yutaka Ohmori, Jesse Froehlich, Sheng Li, Amane Mochizuki
-
Patent number: 8309186Abstract: An object of the present invention is to provide an optical film exhibiting a preferable wavelength dispersion and capable of being formed comparatively thinly. The present invention is an optical film containing the repeating unit represented by the following general formula (II). In the formula (II), A, A?, B, and B? each denote a substituent, a, a?, b, and b? denote the number of substituents of the corresponding A, A?, B, and B?. A, A?, B and B? each independently denote a halogen or an alkyl group having 1 to 4 carbon atoms. R1 and R2 denote a halogen, an alkyl group having 1 to 10 carbon atoms, and the like. X denotes —CO—, —SO2—, and the like.Type: GrantFiled: April 9, 2008Date of Patent: November 13, 2012Assignee: Nitto Denko CorporationInventors: Toshiyuki Iida, Yutaka Ohmori, Miyuki Kurogi
-
Publication number: 20120282397Abstract: The invention relates to an optical film containing polyester with a specific structure, and methods for production thereof. Further, the invention also relates to an optical laminate, a polarizing plate, and an image display device each using the optical film. The polyester may be obtained by condensation polymerization of dicarboxylic acid compound(s) and bisphenol compound(s), and preferably has no halogen atom in its chemical structure. According to the invention, high productivity of the optical film can be achieved since the polyester has a high solubility in solvents, and an environmental loading for production can be reduced.Type: ApplicationFiled: July 17, 2012Publication date: November 8, 2012Applicant: NITTO DENKO CORPORATIONInventors: Tomoyuki Hirayama, Toshiyuki Iida, Yutaka Ohmori, Miyuki Kurogi, Hisae Shimizu
-
Publication number: 20120268810Abstract: There is provided an infrared ray reflective substrate including an infrared ray reflective layer, a protective layer disposed on a surface of the infrared ray reflective layer and a transparent substrate that supports the infrared ray reflective layer from a rear surface side thereof, wherein the protective layer is formed from a polycycloolefin layer.Type: ApplicationFiled: November 9, 2010Publication date: October 25, 2012Applicant: NITTO DENKO CORPORATIONInventors: Yutaka Ohmori, Kazuaki Sasa, Toshitaka Nakamura
-
Publication number: 20120263871Abstract: The invention relates to a resin solution containing polyester with a specific structure, an optical film containing the polyester, and methods for production thereof Further, the invention also relates to an optical laminate, a polarizing plate, and an image display device each using the optical film. The polyester may be obtained by condensation polymerization of dicarboxylic acid compound(s) and bisphenol compound(s), and preferably has no halogen atom in its chemical structure. According to the invention, high productivity of the optical film can be achieved since the polyester has a high solubility in solvents, and an environmental loading for production can be reduced.Type: ApplicationFiled: June 22, 2012Publication date: October 18, 2012Applicant: NITTO DENKO CORPORATIONInventors: Toshiyuki IIDA, Tomoyuki Hirayama, Yutaka Ohmori, Miyuki Kurogi, Hisae Shimizu
-
Patent number: 8218937Abstract: An optical film of the present invention comprises a polyimide-based polymer represented by the following general formula (V). The optical film of the present invention exhibits an optical property such that wavelength dispersion of retardation scarcely changes ranging from the short wavelength side to the long wavelength side. Typically, the optical film of the present invention may be used as a retardation film of a liquid crystal display device.Type: GrantFiled: September 21, 2007Date of Patent: July 10, 2012Assignee: Nitto Denko CorporationInventors: Toshiyuki Iida, Yutaka Ohmori, Miyuki Kurogi
-
Patent number: 8058318Abstract: There is provided an acidic zirconia sol having compatibility of particle properties and binding properties, and a production method of the same. The acidic zirconia sol includes zirconia particles (a) having a particle diameter ranging from 20 to 300 nm in a content of 90 to 50% by mass, based on the mass of all zirconia particles, and zirconia particles (b) having a particle diameter of less than 20 nm in a content of 10 to 50% by mass, based on the mass of all zirconia particles.Type: GrantFiled: January 14, 2010Date of Patent: November 15, 2011Assignee: Nissan Chemical Industries, Ltd.Inventors: Yutaka Ohmori, Hirokazu Kato, Kenji Yamaguchi
-
Patent number: 7999059Abstract: The invention relates to an optical film containing aromatic polymer which shows high solubility to solvents, and methods for production thereof. Further, the invention also relates to an optical laminate, a polarizing plate, and an image display device each using the optical film. The optical film may be attained by using polyester with a specific structure. The polyester with a specific structure may be obtained by condensation polymerization of bisphenol compound(s) and dicarboxylic acid compound(s) with biphenyl structure, and preferably has no halogen atom in its chemical structure. The optical film of the invention advantageously has not only high solubility in solvents but also a high level of heat resistance and birefringence producing capability. When the content of the biphenyl structure is high, the optical film of the invention can also have large wavelength dispersion of birefringence.Type: GrantFiled: November 6, 2008Date of Patent: August 16, 2011Assignee: Nitto Denko CorporationInventors: Tomoyuki Hirayama, Toshiyuki Iida, Yutaka Ohmori, Miyuki Kurogi, Hisae Shimizu