Patents Assigned to Nitto-Denko
  • Patent number: 12221571
    Abstract: A pressure-sensitive adhesive layer consists of a dried product of a water-dispersed pressure-sensitive adhesive composition. The water-dispersed pressure-sensitive adhesive composition contains a water-dispersible polymer, water, and polyacrylic acid. The polyacrylic acid content is above 0.1 parts by mass and 7 parts by mass or less with respect to 100 parts by mass of the water-dispersible polymer. A thickness of the pressure-sensitive adhesive layer is 10 ?m or more and 40 ?m or less.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: February 11, 2025
    Assignee: NITTO DENKO CORPORATION
    Inventors: Shuhei Yamamoto, Amane Sawamura
  • Patent number: 12215258
    Abstract: Provided is a PSA sheet having a PSA layer. The PSA layer has a multilayer structure comprising a layer A forming one face of the PSA layer and a layer B placed on the backside of the layer A. The layer B is a photo-crosslinkable PSA layer comprising a photo-crosslinkable polymer.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: February 4, 2025
    Assignee: NITTO DENKO CORPORATION
    Inventors: Ryoko Asai, Naofumi Kosaka, Yosuke Shimizu
  • Patent number: 12214575
    Abstract: A member supplying sheet provided includes: a protective cover member configured to be placed on a face of an object to prevent a foreign matter from entering an opening of the face; and a substrate sheet having a surface where the protective cover member is placed. The protective cover member includes a laminate including: 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. The protective cover member is placed on the surface of the substrate sheet via the adhesive layer. The member supplying sheet is suitable for supplying the protective cover member to a device that picks up the protective cover member in a state where the substrate sheet is pushed up from a back side of the substrate sheet, the back side being opposite to the surface.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: February 4, 2025
    Assignee: NITTO DENKO CORPORATION
    Inventor: Hiroki Kigami
  • Patent number: 12215972
    Abstract: Provided is a sensor device in which the sensitivity of a strain sensor is hardly inhibited despite the fact that a glass material is used as a protective material, and in which the glass material hardly breaks. The sensor device of the present invention includes: an optical laminate including a glass film, an adhesive layer, a resin layer, and a pressure-sensitive adhesive layer in the stated order; and a strain-sensing unit, wherein the glass film has a thickness of from 20 ?m to 150 ?m. In one embodiment, the strain-sensing unit is arranged on a pressure-sensitive adhesive layer side of the optical laminate.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: February 4, 2025
    Assignee: NITTO DENKO CORPORATION
    Inventors: Junichi Inagaki, Takeshi Murashige, Keisuke Sato
  • Publication number: 20250035833
    Abstract: An optical laminate includes: a first optical sheet that has a first main surface with a relief structure thereon and a second main surface on the reverse side from the first main surface; and a second optical sheet that has a third main surface disposed on the first main surface side of the first optical sheet. The relief structure of the first main surface includes a plurality of recessed portions and flat portions that are each between two recessed portions adjacent to one another among the plurality of recessed portions. The third main surface and the flat portions of the first main surface are bonded by covalent bonding with a molecular adhesive therebetween.
    Type: Application
    Filed: October 21, 2022
    Publication date: January 30, 2025
    Applicant: NITTO DENKO CORPORATION
    Inventors: Tatsuya SUZUKI, Kaori MIZOBATA, Kaori SHINYA, Satoshi HONDA, Akiko TANAKA, Mizuho MIZUNO, Shigeki ISHIGURO
  • Publication number: 20250034433
    Abstract: Provided is a PSA tape comprising a substrate layer formed of a polyvinyl chloride film, and a PSA layer on at least one side of the substrate layer. The substrate layer comprises polyvinyl chloride, a plasticizer, and an elastomer. The elastomer comprises at least a thermoplastic polyurethane or a thermoplastic polyester elastomer.
    Type: Application
    Filed: November 17, 2022
    Publication date: January 30, 2025
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kosuke MORITA, Yoshio NAKAGAWA, Tomohito HARADA
  • Publication number: 20250034023
    Abstract: An objective of the present invention is to provide a brittle material chip and the like having excellent flexibility. The present invention is a brittle material chip including a brittle material layer formed of a brittle material. The brittle material chip includes first processed marks formed on one side in a thickness direction of the brittle material layer on at least one end surface of the brittle material layer and having depths of 1 ?m or more and less than half the thickness of the brittle material layer and includes or does not include second processed marks formed on the other side in the thickness direction on the end surface of the brittle material layer, facing the first processed marks in the thickness direction, and having depths of less than 1 ?m.
    Type: Application
    Filed: October 28, 2022
    Publication date: January 30, 2025
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takanobu YANO, Takuya MORI, Toshihiro KANNO, Satoshi HIRATA
  • Patent number: 12209209
    Abstract: The present invention relates to a method of producing a bonded body in which members are allowed to bond to each other with a yarn-like adhesive body, and at least a part of a bonding region, which is a portion where members are allowed to bond to each other, has a bent shape, and the members are allowed to bond to each other with the yarn-like adhesive body bent according to a shape of the bonding region.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: January 28, 2025
    Assignee: NITTO DENKO CORPORATION
    Inventors: Atsushi Takashima, Ginji Mizuhara, Hiromitsu Morishita
  • Patent number: 12207944
    Abstract: A laminate for biosensor includes a pressure-sensitive adhesive layer for attaching to a surface of a living body; and a substrate layer disposed on the upper face of the pressure-sensitive adhesive layer, wherein the laminate for biosensor includes a probe disposed at the lower face of the laminate for biosensor, and a moisture barrier layer disposed so as to overlap with the probe when projected in the thickness direction.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: January 28, 2025
    Assignee: NITTO DENKO CORPORATION
    Inventor: Ryoma Yoshioka
  • Patent number: 12210181
    Abstract: A lightguide component for illumination devices having an exit surface includes: a lightguide layer having a light-receiving portion to receive light emitted from a light source, a first principal face at the exit surface side, and a second principal face at an opposite side from the first principal face; a light distribution controlling structure having a plurality of internal spaces, each of the plurality of internal spaces including a first slope to direct a portion of light propagating in the lightguide layer toward the exit surface via total internal reflection, and a second slope at an opposite side from the first slope, wherein, when viewed from a normal direction of the first principal face of the lightguide layer, the first slope presents a curved surface that is convex toward the light source; and an anti-reflection layer and/or anti-glare layer disposed at the first principal face side of the lightguide layer.
    Type: Grant
    Filed: June 10, 2022
    Date of Patent: January 28, 2025
    Assignee: NITTO DENKO CORPORATION
    Inventors: Shimpei Mukadeyama, Takahiro Yoshikawa, Kozo Nakamura
  • Patent number: 12205744
    Abstract: An inductor includes a wire, and a magnetic layer covering the wire. The wire includes a conducting line, and an insulating layer covering the conducting line. The magnetic layer includes a magnetic particle and a binder. In a peripheral region of the wire, a filling rate of the magnetic particle is 40% by volume or more. The peripheral region is a region of the magnetic layer traveling outwardly from an outer peripheral surface of the wire by 1.5 times an average of the longest length and the shortest length from the center of gravity C of the wire to an outer surface of the wire in a cross-sectional view.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: January 21, 2025
    Assignee: NITTO DENKO CORPORATION
    Inventors: Keisuke Okumura, Yoshihiro Furukawa
  • Patent number: 12205754
    Abstract: An inductor includes a wire, and a magnetic layer covering the wire. The wire includes a conducting line and an insulating layer. The magnetic layer contains an anisotropic magnetic particle and a binder. In a peripheral region of the wire, the magnetic layer includes an orientated region. The peripheral region is, in a cross-sectional view, a region from an outer surface of the wire to an outward distance of 1.5 times an average of the longest length and the shortest length from the center of gravity of the wire to the outer surface of the wire. The upper surface of the inductor has a protruding portion caused by the wire.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: January 21, 2025
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yoshihiro Furukawa, Keisuke Okumura
  • Patent number: 12201429
    Abstract: A conductive film includes a cured material having a composition containing a conductive polymer and a binding resin, wherein a water content of the cured material after water absorption is 70% or less.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: January 21, 2025
    Assignee: NITTO DENKO CORPORATION
    Inventor: Takuro Aiga
  • Patent number: 12207410
    Abstract: Provided is a wiring circuit board that allows the electrical connection between the elements and the terminals to be easy and sure. The wiring circuit board includes an insulating base layer, a plurality of wires with different thicknesses from each other, and an insulating cover layer sequentially toward an upper side. The wires include a first wire having the greatest thickness. The wiring circuit board further includes a plurality of terminals disposed on an upper surface of the insulating base layer. The terminals are electrically connected with the wires, respectively. The upper surfaces and of the terminals are each located at an upper side as compared to an upper surface of the insulating cover layer (a wire covering portion) covering the first wire.
    Type: Grant
    Filed: October 25, 2022
    Date of Patent: January 21, 2025
    Assignee: NITTO DENKO CORPORATION
    Inventors: Hayato Takakura, Naoki Shibata, Ryosuke Sasaoka
  • Publication number: 20250018350
    Abstract: An air-permeable filter includes a porous fluorine resin membrane having one principal surface and the other principal surface, and treated with an oil-repellent agent for oil-repellency. In a measurement of its absorption spectrum by Fourier-transform infrared spectroscopy, an absorbance ratio Rf of the one principal surface and an absorbance ratio Rb of the other principal surface calculated by Aa/Am are not substantially the same. The Aa indicates an absorbance at a peak derived from the oil-repellent agent in the absorption spectrum, and the Am indicates an absorbance at a peak derived from a C—F bond in the absorption spectrum.
    Type: Application
    Filed: November 8, 2022
    Publication date: January 16, 2025
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kodai UEDA, Yu KAMAMOTO, Yuichi TAKAMURA, Satoru FURUYAMA
  • Publication number: 20250018684
    Abstract: A cover member suitable for suppressing damage to a semiconductor device package includes: a cover sheet having a shape configured to cover an object in a state of being placed on a placement face; and an adhesive layer joined to the cover sheet and configured to fix the cover member to the placement face. The adhesive layer includes a double-sided adhesive sheet. The double-sided adhesive sheet has a structure in which a first adhesive agent layer, a substrate, and a second adhesive agent layer are laminated in this order. The substrate has a porous structure. The substrate has a porosity of 30% or more. When the porosity of the substrate is 30% or more and 50% or less, the substrate has an average pore diameter of 10 ?m or more, and when the porosity of the substrate is more than 50%, the average pore diameter is 0.05 ?m or more.
    Type: Application
    Filed: August 31, 2022
    Publication date: January 16, 2025
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kyoko ISHII, Yosuke SUGAYA, Takeo INOUE, Tomohiro KONTANI, Shimpei YAKUWA, Shunji IMAMURA
  • Publication number: 20250020856
    Abstract: Provided is an optical member production method including: a step A of preparing a porous layer supported on a substrate; a step B of applying laser light to the porous layer to remove a partial region of the porous layer, the partial region to be removed including a plurality of discrete island-like regions; and a step C of arranging a first adhesive layer on the porous layer after the step B.
    Type: Application
    Filed: February 22, 2023
    Publication date: January 16, 2025
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kenjiro SAOMOTO, Naoyuki MATSUO, Shunya WAKAYAMA
  • Patent number: 12200414
    Abstract: The waterproof member of the present disclosure is a waterproof member comprising a waterproof membrane configured to prevent entry of water while permitting sound and/or gas to pass therethrough, and a support layer having air permeability in a thickness direction thereof, wherein the member has a joining region where the waterproof membrane and the support layer are joined, and a non-joining region where the waterproof membrane and the support layer are spaced apart from each other, the non-joining region is surrounded by the joining region when viewed in a direction perpendicular to a main surface of the waterproof membrane, and a thickness of the support layer in the non-joining region is less than 100 ?m. The waterproof member of the present disclosure is, for example, a waterproof sound-transmitting member including a waterproof sound-transmitting membrane and a support layer for the membrane and having improved sound transmission characteristics.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: January 14, 2025
    Assignee: NITTO DENKO CORPORATION
    Inventors: Tamao Fukushima, Yosuke Sugaya, Bunta Hirai, Yuichi Abe
  • Patent number: 12198843
    Abstract: An inductor includes a wire, and a magnetic layer covering the wire. The wire includes a conducting line, and an insulating layer. The magnetic layer contains an anisotropic magnetic particle and a binder. In a peripheral region of the wire, the magnetic layer includes an orientated region in which the anisotropic magnetic particle is orientated along the periphery of the wire. The peripheral region is, in a cross-sectional view, a region from an outer surface of the wire to an outward distance of 1.5 times an average of the longest length and the shortest length from the center of gravity of the wire to the outer surface of the wire. An upper surface and a lower surface of the inductor are flat.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: January 14, 2025
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yoshihiro Furukawa, Keisuke Okumura
  • Patent number: 12194712
    Abstract: The purpose of the present invention is to provide a sheet body having an improved function of preventing icing and/or snow accretion. At least included are a solid oil-containing resin layer containing an oil and an oil-permeable surface resin layer that has higher wear resistance than the oil-containing resin layer and is layered on one of surfaces of the oil-containing resin layer. The oil included in the oil-containing resin layer includes a low-temperature exuding oil component capable of exuding from the oil-containing resin layer when a temperature decreases to a predetermined value or lower, and the surface resin layer has enough oil permeability to permeate the low-temperature exuding oil component exuding from the oil-containing resin layer to a surface of the surface resin layer that is opposite to a side of the oil-containing resin layer.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: January 14, 2025
    Assignee: NITTO DENKO CORPORATION
    Inventors: Kenichi Eguchi, Shinya Kotake, Daisuke Matsukuma, Aika Ishii, Hiroyuki Fujita