Patents Assigned to Nitto-Denko
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Publication number: 20240336760Abstract: Provided are a method for producing a water-soluble polymer in which a water-soluble polymer can be produced from a pressure-sensitive adhesive as waste under a mild condition, a method for producing a water-absorbent polymer in which a water-absorbent polymer can be produced from a pressure-sensitive adhesive under a mild condition, a water-soluble polymer that can be produced from a pressure-sensitive adhesive, and a water-absorbent polymer that can be produced from a pressure-sensitive adhesive. A method for producing a water-soluble polymer according to an embodiment of the present invention includes bringing a pressure-sensitive adhesive treatment liquid which contains a liquid having a Hansen solubility parameter value of 31 or less and an alkaline compound and in which a concentration of the alkaline compound in the pressure-sensitive adhesive treatment liquid is from 0.001 wt % to 20 wt %, into contact with a pressure-sensitive adhesive.Type: ApplicationFiled: June 28, 2022Publication date: October 10, 2024Applicant: NITTO DENKO CORPORATIONInventors: Yosuke Yamada, Akiyoshi Yamamoto, Takayuki Nomura
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Patent number: 12111009Abstract: Provided is a flame retardant and heat insulating sheet having high flame retardancy and a high heat insulating property. Also provided is a flame retardant heat insulator including such flame retardant and heat insulating sheet. A flame retardant and heat insulating sheet according to one embodiment includes: a flame retardant and heat insulating layer formed from a resin composition (A); and a heat insulating layer, wherein the resin composition (A) contains: a binder resin; a low-melting point inorganic substance; a high-melting point inorganic substance; and voids. A flame retardant and heat insulating sheet according to one embodiment includes: a flame retardant and heat insulating layer formed from a resin composition (B); and a heat insulating layer, wherein the resin composition (B) contains: a binder resin that produces a high-melting point inorganic substance when heated; a low-melting point inorganic substance; and voids and/or a void-forming agent.Type: GrantFiled: November 6, 2020Date of Patent: October 8, 2024Assignee: NITTO DENKO CORPORATIONInventor: Yusuke Sugino
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Patent number: 12111530Abstract: According to the present invention, provided is a PDLC film, which includes a PDLC layer excellent in thickness uniformity and is suppressed from causing liquid crystal leakage from the PDLC layer. A method of producing a polymer dispersed liquid crystal film of the present invention includes: applying, to a first transparent conductive film, an emulsion including a solvent, and polymer particles and liquid crystal particles dispersed in the solvent to form an applied layer; drying the applied layer to form a polymer dispersed liquid crystal layer containing a polymer matrix and the liquid crystal particles dispersed in the polymer matrix; and laminating a second transparent conductive film on the polymer dispersed liquid crystal layer, wherein the polymer particles include first polymer particles and second polymer particles, and wherein an average particle diameter of the second polymer particles is larger than an average particle diameter of the first polymer particles.Type: GrantFiled: March 29, 2021Date of Patent: October 8, 2024Assignee: NITTO DENKO CORPORATIONInventors: Hiroyuki Takemoto, Jin Yoshikawa, Masanori Otsuka, Mariko Hirai
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Patent number: 12114438Abstract: A method for manufacturing a double-sided wiring circuit board includes a first step of preparing a laminate and a second step. The laminate includes a metal core layer, insulating layers, and conductor layers. The insulating layer has a region and an opening that are adjacent to each other. The insulating layer has a region including a part facing the region in a thickness direction, and an opening adjacent to the region. The conductor layer includes a wiring portion and a conductive portion. In the second step, the first and second etching treatments for etching the metal core layer through the openings are carried out to form a via portion having a periphery surrounded by a space, extending between the regions, and connected to the conductive portions.Type: GrantFiled: November 12, 2020Date of Patent: October 8, 2024Assignee: NITTO DENKO CORPORATIONInventors: Shusaku Shibata, Rihito Fukushima, Teppei Niino
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Publication number: 20240329296Abstract: A plastic optical fiber of the present disclosure includes a core and a trench disposed on an outer circumference of the core. The core includes a first region and a second region, the first region having a refractive index n1 decreasing in a direction from a center of the core toward an outer edge of the core, the second region being positioned on an outer circumference of the first region, the second region including the outer edge of the core, the second region having a refractive index n2 being constant. The refractive index n2 of the second region is equal to or lower than the refractive index n1 of the first region, a thickness of the second region is 2 ?m or more and less than 5 ?m, and a refractive index n3 of the trench is lower than the refractive index n2 of the second region.Type: ApplicationFiled: March 26, 2024Publication date: October 3, 2024Applicant: NITTO DENKO CORPORATIONInventors: Toru Moriya, Kazuya Takayama, Hiroshi Ohmura
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Publication number: 20240329295Abstract: A plastic optical fiber of the present disclosure includes: a core including a first region having a refractive index decreasing in a direction from a center of the core toward an outer edge of the core; and a trench disposed on an outer circumference of the core. When a refractive index difference between a refractive index n1 at the outer edge of the core and a refractive index n2 of the trench is defined as ?n and a thickness of the trench is defined as d (?m), a value of ?n×d is 0.010 or more and 0.06 or less.Type: ApplicationFiled: March 26, 2024Publication date: October 3, 2024Applicant: NITTO DENKO CORPORATIONInventors: Takashi Shimizu, Toru Moriya, Kazuya Takayama, Hiroshi Ohmura
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Publication number: 20240329343Abstract: A photoelectric composite transmission module includes: a photoelectric hybrid substrate including: the substrate; a photoelectric conversion unit on a first surface of the substrate; and an optical waveguide provided on a second surface of the substrate; a first housing on one surface side of the photoelectric hybrid substrate, the one surface side corresponding to a surface of the photoelectric hybrid substrate on which the photoelectric conversion unit is provided; a second housing on the other surface side of the photoelectric hybrid substrate, the other surface side corresponding to a surface of the photoelectric hybrid substrate on which the optical waveguide is provided; and a heat-transfer member provided between the surface of the photoelectric hybrid substrate on which the photoelectric conversion unit is provided and the first housing. The photoelectric conversion unit is covered with resin. A surface of the resin and the first housing abut the heat-transfer member.Type: ApplicationFiled: March 21, 2024Publication date: October 3, 2024Applicant: NITTO DENKO CORPORATIONInventors: Atsushi Yamagishi, Masataka Yamaji, Naoto Konegawa
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Patent number: 12108529Abstract: A suspension board with circuit including a first mounting region for mounting a slider and a second mounting region for mounting a piezoelectric element. The wiring circuit board includes a metal support layer, a base insulating layer, and a conductive layer. The conductive layer includes a first wiring pattern, a second wiring pattern, and a shield wiring pattern. The first wiring pattern includes a read wiring. The second wiring pattern includes a power supply wiring disposed at spaced intervals to the read wiring. The shield wiring pattern includes a shield wiring disposed between the read wiring and the power supply wiring.Type: GrantFiled: November 12, 2020Date of Patent: October 1, 2024Assignee: NITTO DENKO CORPORATIONInventor: Yoshito Fujimura
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Patent number: 12105313Abstract: A lighting device that can ensure task productivity while reducing the glare is provided herein. The lighting device has a light source; and a light guiding part including a light guiding panel and configured to guide light that is emitted from the light source. The light guiding panel includes: a light incident end surface that is situated facing the light source, the light incident end surface being a surface on which the light emitted from the light source is incident; a first light emitting part that is included in an opposite end from the light incident end surface, and that emits the light guided inside the light guiding panel; and a second light emitting part that is included in a predetermined main surface of the light guiding panel that intersects with the light incident end surface, and that emits the light guided inside the light guiding panel.Type: GrantFiled: July 16, 2021Date of Patent: October 1, 2024Assignee: NITTO DENKO CORPORATIONInventors: Kozo Nakamura, Yufeng Weng, Takahiro Yoshikawa
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Patent number: 12102437Abstract: A data acquisition device includes an integrated circuit and an information processor. The integrated circuit has a first terminal for receiving a master/slave switching signal upon start of data acquisition, an ADC for converting analog input data to digital data, and an output terminal for outputting the digital data. The information processor generates the master/slave switching signal, and has a second terminal connected to the first terminal and for outputting the master/slave switching signal, and an input terminal connected to the output terminal and for receiving the digital data. The information processor operates in the master mode when the integrated circuit operates in the slave mode. The information processor operates in the slave when the integrated circuit operates in the master mode. The integrated circuit outputs the digital data when operating in the master mode according to the master/slave switching signal.Type: GrantFiled: March 17, 2020Date of Patent: October 1, 2024Assignees: NITTO DENKO CORPORATION, SPCHANGE, LLC.Inventors: Takatsugu Kamata, Yusaku Hirai, Masayuki Ueda, Ryoma Yoshioka
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Patent number: 12104100Abstract: An adhesive composition contains at least a polymer and an ionic liquid. The adhesive composition includes components such that when an ionic liquid-free adhesive layer is formed of a composition composed of the components of the adhesive composition that are other than the ionic liquid among components contained in the adhesive composition, the ionic liquid-free adhesive layer has a relative permittivity of 5 or more at a frequency of 100 Hz, after being left to stand in an environment of 22° C. and 20% RH for 3 days.Type: GrantFiled: August 30, 2019Date of Patent: October 1, 2024Assignee: NITTO DENKO CORPORATIONInventors: Kaori Mizobata, Kaori Akamatsu, Mika Takashima, Masayuki Okamoto
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Patent number: 12098311Abstract: Provided is a hot-melt pressure-sensitive adhesive composition which enables to form a pressure-sensitive adhesive layer without allowing the progression of rapid gelation at the time of heating and melting. The pressure-sensitive adhesive composition provided by the present invention is a solvent-free hot-melt pressure-sensitive adhesive composition. The pressure-sensitive adhesive composition includes a base polymer, an isocyanate crosslinking agent, and a tackifier T which is a reaction product of a compound X and a compound Y. A content of the tackifier T with respect to 100 parts by weight of the base polymer is 20 parts by weight or more and 40 parts by weight or less.Type: GrantFiled: February 17, 2021Date of Patent: September 24, 2024Assignee: NITTO DENKO CORPORATIONInventors: Nobukazu Negishi, Itsuhiro Hatanaka, Hiroaki Takahashi
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Patent number: 12099017Abstract: An inspection system includes a memory; and a processor, wherein the memory is configured to hold an image reproducing model trained to reproduce, from a first masked image generated by masking part, of a first image determined as including no defect from among images that capture an object to be inspected, the first image before being masked, and wherein the processor is configured to determine, based on a reproduced image reproduced by inputting a second masked image generated by masking part of a second image that captures a new object to be inspected into the image reproducing model, and the second image, whether the second image includes a defect.Type: GrantFiled: January 20, 2022Date of Patent: September 24, 2024Assignee: NITTO DENKO CORPORATIONInventors: Yoichi Kigawa, Yatfei Chan
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Publication number: 20240310563Abstract: There is provided a view blind check film that allows whether or not an image display apparatus is blinded to easily be checked inside a space for which an anti-peeping system is employed. A view blind check film according to at least one embodiment of the present invention includes: a polarizing plate including a polarizer; and a reflective layer arranged on at least a part of one of principal surfaces of the polarizing plate.Type: ApplicationFiled: March 6, 2024Publication date: September 19, 2024Applicant: NITTO DENKO CORPORATIONInventors: Saori Yamamoto, Yuji Toyota
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Patent number: 12087924Abstract: Provided is a gas adsorption sheet for a secondary battery, which contains gas adsorbent particles excellent in gas adsorption property, and allows the gas adsorption performance of the gas adsorbent particles to be sufficiently exhibited. According to one embodiment of the present invention, there is provided a gas adsorption sheet for a secondary battery, including: a heat-resistant base material; and a gas adsorption layer arranged on at least one surface of the heat-resistant base material, wherein the gas adsorption layer contains: a binder resin; and gas adsorbent particles each of which is formed of an inorganic porous material having pores, and is capable of adsorbing a gas.Type: GrantFiled: June 17, 2019Date of Patent: September 10, 2024Assignee: NITTO DENKO CORPORATIONInventors: Kota Nakao, Daisuke Shimokawa, Shigeki Kawabe, Mitsuru Nozue, Minoru Yagi
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Publication number: 20240293783Abstract: A composite semipermeable membrane includes: a porous support including a porous resin layer; and a separation functional layer formed of a polyamide-based resin on the porous resin layer. The polyamide-based resin contains a resin component derived from a divalent polyfunctional amine and a trivalent or higher polyfunctional acid halide, a molar ratio of the trivalent or higher polyfunctional acid halide to the divalent polyfunctional amine is in a range of 0.65 to 1.00, and a terminal carboxyl group concentration is 0.01 or less. The composite semipermeable membrane has an amide intensity ratio of 0.60 or more, the amide intensity ratio being a ratio of an absorption peak intensity derived from C?O stretching vibration of an amide group to an absorption peak intensity derived from a repeating unit of the porous resin layer, when measuring the absorption peaks by an ATR-IR method.Type: ApplicationFiled: February 13, 2024Publication date: September 5, 2024Applicant: NITTO DENKO CORPORATIONInventors: Tomotsugu MIYABE, Atsuki HIRABARA
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Patent number: 12077694Abstract: A surface-protective PSA sheet capable of reducing adherend damage and well maintaining appearance, etc is provided. The surface-protective PSA sheet capable of reducing adherend damage and well maintaining appearance, etc., comprises a surface layer, a resin substrate layer and a PSA layer, and has a multilayer structure with the resin substrate layer placed between the surface layer and the PSA layer, wherein the surface layer is a layer obtainable by curing a heat-curable composition comprising the following components: (a) a hydroxyl group-containing (meth)acrylic copolymer having a glass transition temperature of ?40° C. to 30° C.; (b) an allophanate polyisocyanate and/or a biuret polyisocyanate; and (c) a polysiloxane comprising a hydroxyl group-containing hydrocarbon group and/or polymer.Type: GrantFiled: September 27, 2019Date of Patent: September 3, 2024Assignees: ARAKAWA CHEMICAL INDUSTRIES, LTD., NITTO DENKO CORPORATIONInventors: Keita Kume, Yuki Hashimoto, Akihiro Yamazaki, Toru Higashimoto, Eiichi Imoto, Yoshio Nakagawa, Shota Tanaka, Kenichi Nishikawa, Chihiro Yoshida
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Patent number: 12078837Abstract: An optical deflection tape (10) attachable on a lightguide (20) is provided, comprising a substrate (10A) and at least one pattern (11) formed with a number of periodic pattern features (12) embedded in the substrate (10A) and configured as optically functional cavities (12) filled with a material having a refractive index different from the refractive index of the material of the substrate (10A) surrounding the cavity (12). The pattern (11) is configured to adjust direction of light received thereto such, that light incident at the pattern (11) is deflected to acquire a propagation path through a lightguide medium (20) via a series of total internal reflections and, by virtue of said at least one pattern (11), the optical deflection tape (10) is configured to control distribution of light propagating through the lightguide (20). A method for manufacturing the tape (10) and related uses are further provided.Type: GrantFiled: August 4, 2021Date of Patent: September 3, 2024Assignee: NITTO DENKO CORPORATIONInventors: Kozo Nakamura, Minoru Miyatake, Yufeng Weng, Kari Rinko, Shingo Matsumoto
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Publication number: 20240286389Abstract: A provided protective cover member is a member configured to be placed on a face of an object, the face having an opening. The protective cover member includes a laminate, and the laminate includes: a protective membrane having a shape configured to cover the opening when the protective cover member is placed on the face; and an adhesive layer. When a portion, of the protective membrane, coinciding with the adhesive layer when viewed in a direction perpendicular to a principal surface of the protective membrane is defined as a fixed portion of the protective membrane, an exposed surface of the protective membrane on a side opposite to a side, of the protective membrane, facing the adhesive layer has a region A overlapping the fixed portion when viewed in the perpendicular direction and having a contact angle of 55 degrees or more for methanol.Type: ApplicationFiled: July 1, 2022Publication date: August 29, 2024Applicant: NITTO DENKO CORPORATIONInventors: Eisaku TANAKA, Takeo INOUE, Kyoko ISHII
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Publication number: 20240292528Abstract: A wiring circuit board includes a base insulating layer, a conductive layer, and a cover insulating layer. The conductive layer has a terminal and a wiring. The wiring has a body portion and a connecting portion. The connecting portion connects the body portion to the terminal. The cover insulating layer has a cover body portion and a protruding portion. The cover body portion covers the body portion. The protruding portion covers the connecting portion. The protruding portion protrudes from the cover body portion.Type: ApplicationFiled: February 16, 2024Publication date: August 29, 2024Applicant: NITTO DENKO CORPORATIONInventors: Shusaku SHIBATA, Takaya KOUCHI, Teppei NIINO