Patents Assigned to Nitto Denko Corporation
  • Patent number: 11125924
    Abstract: The present invention is a one-side-protected polarizing film having a polarizer and a protective film provided on only one surface of the polarizer, wherein the polarizer contains a polyvinyl alcohol-based resin, has a thickness of 10 ?m or less, and is configured so that optical properties represented by a single-body transmittance T and a polarization degree P satisfy the following relationship: P>?(100.929T?42.4?1)×100 (provided that T<42.3) or P?99.9 (provided that T?42.3), a transparent layer is provided on another surface of the polarizer, and a dynamic friction coefficient of the surface on which the protective film is provided is 0.2 or less. In this one-side-protected polarizing film, it is possible to resist the occurrence of through cracks and nano-slits even when the polarizer has specific optical properties and a thickness of 10 ?m or less.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: September 21, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Tomonori Ueno, Shinya Hiraoka, Hiromi Ikeshima, Atsushi Kishi
  • Patent number: 11125934
    Abstract: There is provided an optical member and a light guide system each of which is capable of further thinning, and is achieved to emit light having high brightness and excellent in color reproducibility and uniformity. An optical member of the present invention includes: a light guide plate having a first main surface and a second main surface; a wavelength conversion layer, which is arranged near one end portion of the first main surface of the light guide plate, and is configured to convert a wavelength of light in an ultraviolet to blue region entering the wavelength conversion layer from an opposite side to the light guide plate, to thereby guide the light to the light guide plate; and a first reflective plate arranged on a side surface of the light guide plate on a side where the wavelength conversion layer is arranged.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: September 21, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventor: Kozo Nakamura
  • Patent number: 11123967
    Abstract: A heat resistant release sheet of the present disclosure includes a polyimide substrate, and a first polytetrafluoroethylene (PTFE) layer and a second PTFE layer that sandwich the polyimide substrate therebetween. PTFE composing the first PTFE layer and PTFE composing the second PTFE layer each have a number-average molecular weight of 6 million or more, and a peel force required to peel the first PTFE layer from the polyimide substrate is 0.5 N/20 mm or more, and a peel force required to peel the second PTFE layer from the polyimide substrate is less than 0.5 N/20 mm. The heat resistant release sheet of the present disclosure has a new structure and can also be used for thermocompression bonding at a higher temperature.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: September 21, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Kurato Akiba, Yuta Kuroki
  • Publication number: 20210284875
    Abstract: A pressure-sensitive adhesive composition for an image display panel, a pressure-sensitive adhesive layer for an image display panel, and an optical film provided with a pressure-sensitive adhesive layer are disclosed which are free of problems regarding durability and defective appearance caused by an antistatic agent (conductive agent), and which have superior antistatic properties so as to be usable for applications such as in an image display panel. An image display panel is also disclosed in which the optical film provided with a pressure-sensitive adhesive layer is attached to the surface of the image display panel in contact with the pressure-sensitive adhesive layer without an interposed conductive layer, and a liquid crystal display device using the image display panel. Further, a liquid crystal display device is disclosed with a touch sensing function using the image display panel that can be used as various input display devices such as mobile devices.
    Type: Application
    Filed: April 30, 2021
    Publication date: September 16, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masakuni Fujita, Satoshi Yamamoto, Yusuke Toyama
  • Patent number: 11117101
    Abstract: Described herein is a crosslinked graphene and biopolymer (e.g. lignin) based composite membrane that provides selective resistance for solutes while providing water permeability. The membrane may include optional additional functional additives in a crosslinked material matrix that provides enhanced salt separation from water. Methods for making such membranes, and methods of using the membranes for dehydrating or removing solutes from water are also described.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: September 14, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Shijun Zheng, Weiping Lin, Yuji Yamashiro, Isamu Kitahara, John Ericson, Ozair Siddiqui, Wanyun Hsieh, Peng Wang, Craig Roger Bartels, Makoto Kobuke, Shunsuke Noumi
  • Patent number: 11122676
    Abstract: A flexible wiring circuit board includes a first insulating layer, a wire disposed at one side in a thickness direction of the first insulating layer, a second insulating layer disposed at one side in the thickness direction of the wire, a shield layer disposed at one side in the thickness direction of the second insulating layer, and a third insulating layer disposed at one side in the thickness direction of the shield layer. The shield layer includes an electrically conductive layer and two barrier layers sandwiching the electrically conductive layer therebetween in the thickness direction. The electrically conductive layer is selected from a metal belonging to a group 11, and the fourth period and the fifth period in the periodic table, and the barrier layer is selected from a metal belonging to groups 4 to 10, and the fourth to the sixth periods in the periodic table.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: September 14, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Hayato Takakura, Yoshihiro Kawamura, Shuichi Wakaki, Shusaku Shibata
  • Patent number: 11119274
    Abstract: An optical waveguide includes a core extending in a transmission direction of light, a clad covering the core along the transmission direction, and a mixing layer containing a material for the core and a material for the clad on the interface between the core and the clad, and the mixing layer includes a plurality of regions each having a different thickness in the transmission direction.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: September 14, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Naoto Konegawa, Yuichi Tsujita
  • Publication number: 20210278581
    Abstract: There is provided an extremely thin polarizing plate with optical compensation layers which has an excellent antireflection characteristic, and which is suppressed in adverse effect on the display performance of an image display apparatus resulting from a foreign material. A polarizing plate with optical compensation layers of the present invention includes in this order: a polarizer; a first optical compensation layer; and a second optical compensation layer. The first optical compensation layer shows a refractive index characteristic of nx=nz>ny, and has an in-plane retardation Re(550) of from 220 nm to 320 nm. The second optical compensation layer shows a refractive index characteristic of nx>ny=nz, and has an in-plane retardation Re(550) of from 100 nm to 200 nm. The first optical compensation layer contains foreign materials, the first optical compensation layer has a thickness of 1.5 ?m or more, and the first optical compensation layer has a substantially flat surface.
    Type: Application
    Filed: December 12, 2017
    Publication date: September 9, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Ayaka Umemoto, Takeharu Kitagawa, Yuki Hasegawa
  • Publication number: 20210277173
    Abstract: A photosensitive epoxy resin composition for formation of an optical waveguide, which can be used as an optical waveguide forming material excellent in thermal coloration resistance, patternability, and R-to-R adaptability (flexibility in an uncured resin state). The photosensitive epoxy resin composition contains an epoxy resin component and a photo-cationic polymerization initiator, wherein the epoxy resin component comprises an epoxy resin having a tri- or higher functional bisphenol-A skeleton.
    Type: Application
    Filed: July 26, 2019
    Publication date: September 9, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kazuaki Suzuki, Shinya Ota
  • Patent number: 11112640
    Abstract: There is provided an optical member capable of achieving a liquid crystal display apparatus that is thin and has extremely high brightness. An optical member of the present invention includes: a first member having a function of converting direction of light; and a second member laminated on the first member via an adhesion layer. The adhesion layer has void portions, and non-contact portions are defined at an interface between the adhesion layer and the first member and/or the second member, and the adhesion layer is brought into contact with each of the first member and the second member in four corner portions of the optical member in plan view.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: September 7, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventor: Kozo Nakamura
  • Publication number: 20210269682
    Abstract: Provided is a masking tape to be used at the time of formation of an electromagnetic wave shield, which is excellent in followability to irregularities, and which is capable of being peeled off from an irregular surface without any adhesive residue. The masking tape for forming an electromagnetic wave shield includes a pressure-sensitive adhesive layer that is increased in modulus of elasticity through active energy ray irradiation to 20 times or more as high as that before the active energy ray irradiation, wherein the pressure-sensitive adhesive layer has a modulus of elasticity after the active energy ray irradiation of 500 MPa or less.
    Type: Application
    Filed: May 17, 2021
    Publication date: September 2, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventor: Yuji OKAWA
  • Patent number: 11103583
    Abstract: The description is directed to ionizable lipids useful for enhancing the delivery of therapeutic agents in liposomes.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: August 31, 2021
    Assignee: Nitto Denko Corporation
    Inventors: Joseph E. Payne, John A. Gaudette, Zheng Hou, Mohammad Ahmadian, Lei Yu, Victor Knopov, Violetta Akopian, Priya Karmali, Richard P. Witte, Neda Safarzadeh, Wenbin Ying, Jun Zhang
  • Patent number: 11104826
    Abstract: Provided is a PSA sheet capable of providing greater air release properties. The present invention provides a release-linered PSA sheet comprising a PSA sheet and a release liner covering an adhesive face of the PSA sheet. The PSA sheet has a coating layer that partially forms the adhesive face. The release liner has an arithmetic average roughness of 0.1 ?m or greater on the PSA sheet side surface.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: August 31, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Shuuhei Yamamoto, Kiichiro Matsushita
  • Patent number: 11105555
    Abstract: The present invention aims to provide a method and an apparatus for producing a lyophilized body, each of which can achieve energy saving, low cost, and a reduction in processing time and can provide a lyophilized body less damaged by a freezing process and a drying process. The present invention relates to a method for lyophilizing a substance using an electromagnetic wave, and the lyophilization method includes freezing the substance under irradiation of at least an electromagnetic wave and reduced-pressure drying the frozen substance under irradiation of at least an electromagnetic wave.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: August 31, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Chie Matsumoto, Takao Yoshikawa, Takuya Shishido, Yuji Toyota, Sachiko Sakamoto, Yoshimitsu Shimomura, Mitsuhiko Hori
  • Publication number: 20210260851
    Abstract: There is provided an optical laminate that can suppress the deterioration of the optical characteristics of a retardation layer. An optical laminate according to an embodiment of the present invention includes: a UV-absorbing adhesion layer; a protective layer; a polarizer; and a retardation layer. The retardation layer contains a liquid crystal compound. The UV-absorbing adhesion layer and the polarizer are arranged on a viewer side with respect to the retardation layer, and the UV-absorbing adhesion layer contains a base polymer, a UV absorber, and a dye compound whose absorption spectrum has a maximum absorption wavelength present in a wavelength region of from 380 nm to 430 nm.
    Type: Application
    Filed: May 20, 2019
    Publication date: August 26, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hiroshi Tomohisa, Hirofumi Katami, Hironori Yaginuma
  • Publication number: 20210265697
    Abstract: A ventilation unit with: a ventilation body that allows gas to circulate between the outside and inside of a housing; a support member that supports the body attached to an opening portion formed in the housing; and a sealing member between the support member and the outer surface around the housing opening portion and seals a gap between the support member and the housing, wherein the unit performs ventilation between the outside and inside of the housing through the body while attached to the opening portion of the housing. The support member includes: an attachment portion to which the sealing member is attached; and a wall portion around the attachment portion, wherein, in a state where the support member is attached between the support member and the housing, a distance between the support member and an external surface in the support member wall portion is 5.0 mm or more.
    Type: Application
    Filed: June 11, 2019
    Publication date: August 26, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yusuke NAKAYAMA, Youzou YANO, Kou UEMURA
  • Publication number: 20210265096
    Abstract: An inductor includes a wire having a generally circular shape in cross section, and the magnetic layer covering the wire, wherein the wire includes a conductive wire and an insulating layer covering the conductive wire, the magnetic layer contains anisotropic magnetic particles and a binder, and includes in a surrounding region of the wire within 1.5 times the radius of the wire, a first region in which the anisotropic magnetic particles are oriented along the circumferential direction of the wire, and a second region in which the anisotropic magnetic particles are oriented along the crossing direction that crosses the circumferential direction, or in which the anisotropic magnetic particles are not oriented.
    Type: Application
    Filed: June 4, 2019
    Publication date: August 26, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshihiro FURUKAWA, Keisuke OKUMURA
  • Publication number: 20210260852
    Abstract: Provided is a laminate with a glass layer having excellent surface hardness and impact resistance. A laminate with a glass layer of the present invention includes a glass layer, a first pressure-sensitive adhesive layer, an impact absorbing layer, and a second pressure-sensitive adhesive layer in the stated order. The laminate with a glass layer has a pencil hardness of 5 H or more, and according to the laminate with a glass layer, an impact amount SA detected when a stainless-steel ball having a weight of 10 g and a diameter of 13 mm is vertically dropped from a height of 40 cm onto a surface of an impact detection sensor and an impact amount SB detected when the stainless-steel ball is vertically dropped from a height of 40 cm onto the laminate with a glass layer placed on the surface of the impact detection sensor satisfy the following relationship: {(SA?SB)/SA}×100?25(%).
    Type: Application
    Filed: March 12, 2020
    Publication date: August 26, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hong Chan Cho, Takehito Fuchida
  • Patent number: 11099334
    Abstract: An optical connector assembly having a connector housing with a first and second end. First end accepts a ferrule assembly, and second end accepts a retention assembly. There is a longitudinal bore from a distal to proximal end of connector. Bore accepts a POF optical fiber therein at distal end and fiber is inserted proximally until fiber bottoms-out at proximal end of ferrule. Retention body accepts one or more retention caps, or retention body contains at least one retention wing set to secure fiber to connector.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: August 24, 2021
    Assignees: Senko Advanced Components, Inc., Nitto Denko Corporation
    Inventors: Kazumasa Okada, Yuichi Tsujita, Keita Kiyoshima, Kenji Iizumi, Yuki Nishiguchi, Kazuyoshi Takano
  • Patent number: 11101707
    Abstract: This invention provides for a rare-earth permanent magnet-forming sintered body obtained by integrally sintering magnet material particles containing a rare-earth substance while shaping the magnet material particles, a rare-earth permanent magnet obtained by magnetizing the sintered body, and a rotary machine in which the permanent magnet is embedded.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: August 24, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Makoto Fujihara, Kenichi Fujikawa, Takashi Yamamoto, Shoichiro Saito