Patents Assigned to OJI HOLDINGS CORPORATION
  • Publication number: 20210054243
    Abstract: It is an object of the present invention to provide a double-sided adhesive sheet having strong adhesive force and excellent reworkability. The present invention relates a double-sided adhesive sheet having an acrylic adhesive layer and a silicone adhesive layer directly laminated on the acrylic adhesive layer, wherein the interfacial adhesive force between the acrylic adhesive layer and the silicone adhesive layer is 1 N/25 mm or more.
    Type: Application
    Filed: January 18, 2019
    Publication date: February 25, 2021
    Applicant: OJI HOLDINGS CORPORATION
    Inventors: Jiro SHIMIZU, Nobuyuki IWASAKI, Yoshiharu NISHIKORI, Jun SHIONO
  • Patent number: 10910164
    Abstract: The present invention relates to a biaxially stretched polypropylene film for capacitor. The biaxially stretched polypropylene film for capacitor of the present invention can suppress an increase in tan ? and a decrease in the electrostatic capacitance even when the capacitor is used at a high voltage and an elevated temperature for a long duration.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: February 2, 2021
    Assignee: OJI HOLDINGS CORPORATION
    Inventors: Yoshimune Okuyama, Yoshikazu Fujishiro, Masahiro Nakata, Tadakazu Ishiwata, Akihiro Kakehi
  • Patent number: 10899899
    Abstract: An object of the present invention is to improve the strength of a sheet containing substituent-introduced ultrafine fiber under high-humidity conditions while maintaining its high transparency. The sheet of the present invention comprises ultrafine fiber having an ionic substituent, and a divalent or higher metal, and has a haze of 10.0% or less.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: January 26, 2021
    Assignee: OJI HOLDINGS CORPORATION
    Inventors: Go Banzashi, Koh Sakai, Yuichi Noguchi
  • Publication number: 20210009771
    Abstract: It is an object of the present invention to provide an ultrafine cellulose fiber-containing sheet that is excellent in terms of weather resistance. The present invention relates to a sheet comprising cellulose fibers having a fiber width of 1000 nm or less, wherein the cellulose fibers have anionic functional groups, and the YI increase percentage calculated according to the following equation is 1500% or less. YI increase percentage (%)=(yellowness of the sheet after heating?yellowness of the sheet before heating)/yellowness of the sheet before heating×100, wherein the yellowness of the sheet after heating is a yellowness measured in accordance with JIS K 7373, after the sheet is subjected to hot pressing at 180° C. at 0.5 MPa for 1 minute, whereas the yellowness of the sheet before heating is a yellowness measured in accordance with JIS K 7373, before the sheet is subjected to the hot pressing.
    Type: Application
    Filed: December 18, 2018
    Publication date: January 14, 2021
    Applicant: OJI Holdings Corporation
    Inventors: Koh SAKAI, Hayato FUSHIMI
  • Patent number: 10875988
    Abstract: A microfibrous cellulose aggregate containing microfibrous cellulose having an average fiber width of 2 nm to 50 nm and a liquid compound including at least one of water or an organic solvent. The content of the microfibrous cellulose is from 6 mass % to 80 mass % per the mass of the entire microfibrous cellulose aggregate, and the content of the liquid compound is at least 15 mass % per the mass of the entire microfibrous cellulose aggregate.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: December 29, 2020
    Assignee: OJI HOLDINGS CORPORATION
    Inventors: Go Banzashi, Hiroyuki Nagatani, Shino Iwai
  • Publication number: 20200401044
    Abstract: An object of the present invention is to provide a pattern-forming film having excellent etching resistance. The present invention relates to a pattern-forming material including a polymer containing oxygen atoms, in which the polymer has an oxygen atom content of 20% by mass or more with respect to the total mass of the polymer, and the polymer has a silicon atom content of 10% by mass or less with respect to the total mass of the polymer.
    Type: Application
    Filed: February 25, 2019
    Publication date: December 24, 2020
    Applicant: OJI HOLDINGS CORPORATION
    Inventors: Kazuyo MORITA, Kimiko HATTORI
  • Publication number: 20200399443
    Abstract: It is an object of the present invention to provide a resin composite comprising ultrafine cellulose fibers, in which deterioration of a resin component is suppressed. The present invention relates to a cellulose fiber-containing resin composition comprising cellulose fibers with a fiber width of 1000 nm or less having phosphoric acid groups or phosphoric acid group-derived substituents, and a resin, wherein the counterions of the phosphoric acid groups or phosphoric acid group-derived substituents are organic onium ions, and the conjugate bases of the organic onium ions have a pKb value of 1.0 or more.
    Type: Application
    Filed: November 16, 2018
    Publication date: December 24, 2020
    Applicant: OJI HOLDINGS CORPORATION
    Inventors: Mengchen ZHAO, Yuichi NOGUCHI, Yusuke TODOROKI, Ikue SUGIYAMA, Tomoki WATANABE
  • Publication number: 20200401047
    Abstract: An object of the present invention is to provide an underlayer film-forming composition capable of forming an underlayer film which remains with a high proportion in an organic solvent, has a low UV reflectivity, and is excellent in etching resistance. The present invention relates to an underlayer film-forming composition, which contains a copolymer and an organic solvent and is used for patterning, wherein the copolymer contains: (a) a unit derived from a sugar derivative; (b) a unit derived from a compound having a light antireflection function; and (c) a unit derived from a compound capable of cross-coupling the copolymer, the unit derived from a sugar derivative (a) is at least one selected from a unit derived from a pentose derivative and a unit derived from a hexose derivative, and the underlayer film-forming composition is used for metal introduction.
    Type: Application
    Filed: February 25, 2019
    Publication date: December 24, 2020
    Applicant: OJI HOLDINGS CORPORATION
    Inventors: Kimiko HATTORI, Kazuyo MORITA
  • Publication number: 20200385538
    Abstract: The present invention is intended to provide a resin composition capable of suppressing separation between ultrafine cellulose fibers and a resin, and also capable of forming a film having excellent adhesiveness to a base material. The present invention relates to a method for producing a cellulose fiber-containing film, comprising: mixing cellulose fibers having a fiber width of 1000 nm or less with organic onium; mixing the cellulose fiber mixture obtained in the mixing step, an organic solvent and a resin to obtain a resin composition; and applying the resin composition onto a base material, wherein the cellulose fibers have anionic groups, and the content of the anionic groups is 0.50 mmol/g or more, and the content of the cellulose fibers in the resin composition is 1% by mass or more.
    Type: Application
    Filed: February 20, 2019
    Publication date: December 10, 2020
    Applicant: OJI HOLDINGS CORPORATION
    Inventors: Yusuke TODOROKI, Mengchen ZHAO, Yuichi NOGUCHI
  • Publication number: 20200384012
    Abstract: The present invention provides a pentosan polysulfate having a uronic acid content of 7.0 mass % to 15.0 mass % and an acetyl group content of 0 mass % to 2.0 mass %; a pharmaceutically acceptable salt thereof; or a pharmaceutically acceptable solvate of the pentosan polysulfate or of the pharmaceutically acceptable salt thereof. The pentosan polysulfate, the pharmaceutically acceptable salt thereof, or the pharmaceutically acceptable solvate of the pentosan polysulfate or of the pharmaceutically acceptable salt thereof are useful as an active ingredient of a medicament for preventing and/or treating a disease caused by abnormal enhancement of FGF-2 function, and as a pH buffer agent.
    Type: Application
    Filed: December 18, 2018
    Publication date: December 10, 2020
    Applicant: OJI HOLDINGS CORPORATION
    Inventor: Suguru ISHIKAWA
  • Publication number: 20200332027
    Abstract: The present invention provides a method for producing pentosan polysulfate, the method including a first step of obtaining an acidic xylooligosaccharide from a plant-derived raw material, and a second step of obtaining pentosan polysulfate from the acidic xylooligosaccharide. The first step includes a step of depolymerizing the plant-derived raw material. The second step includes a step of sulfating the acidic xylooligosaccharide. The method further includes a deacetylation step of adding a base to achieve a pH of 11 or higher. The deacetylation step is a step performed after the depolymerization step. The production method of the present invention can provide pentosan polysulfate having a low acetyl group content, and also produce pentosan polysulfate with a high yield inexpensively and efficiently.
    Type: Application
    Filed: August 31, 2017
    Publication date: October 22, 2020
    Applicant: OJI HOLDINGS CORPORATION
    Inventors: Kotaro ISHIKAWA, Takuro KASHIWAMURA, Takuya KATO, Toru KOGA, Suguru ISHIKAWA
  • Publication number: 20200332143
    Abstract: It is an object of the present invention to provide a cellulose fiber-containing composition and a cellulose fiber-containing paint, the particles (aggregates) of which are suppressed in coated products. According to the present invention, provided is a cellulose fiber-containing composition comprising cellulose fibers having a fiber width of 1000 nm or less and water, wherein the image clarity (comb width: 0.125 mm) of a coating film obtained from the following conditions is 55% or more: (Conditions) the cellulose fiber-containing composition, an acrylic resin in an amount of 156 parts by weight based on 1 part by weight of the cellulose fibers, and isocyanate in an amount of 44 parts by weight based on 1 part by weight of the cellulose fibers, are mixed with one another to obtain a coating solution, which is then applied onto a smooth polyethylene terephthalate plate to a thickness of 30 ?m, using an applicator, and immediately after the application of the coating solution, it is dried at 80° C.
    Type: Application
    Filed: August 29, 2017
    Publication date: October 22, 2020
    Applicant: Oji Holdings Corporation
    Inventors: Emi AIZAWA, Hiroki YAMAMOTO, Rina TANAKA, Hayato FUSHIMI, Kazuo YAMANE
  • Patent number: 10808361
    Abstract: It is an object of the present invention to provide a composite sheet, which achieves all of water repellency, water resistance, transparency and mechanical strength. The present invention relates to a sheet having a fiber layer and a coating layer on the fiber layer, wherein the fiber layer comprises ultrafine cellulose fibers having a fiber width of 1000 nm or less in an amount of 60% by mass or more, the haze of the sheet is 20% or less, and the water contact angle of the surface of the sheet on the side of the coating layer which is measured 30 seconds after completion of the dropping of distilled water is 70 degrees or more.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: October 20, 2020
    Assignee: OJI HOLDINGS CORPORATION
    Inventors: Hirokazu Sunagawa, Koh Sakai, Hayato Fushimi, Go Banzashi
  • Patent number: 10759929
    Abstract: A main object is to provide a biaxially stretched polypropylene film for capacitors that has high voltage resistance at high temperatures and excellent dielectric breakdown properties and that can be formed into an ultrathin film. Furthermore, a capacitor obtained by using the biaxially stretched polypropylene film for capacitors described above is provided. The biaxially stretched polypropylene film for capacitors, includes a polypropylene resin, and the film has a spacing value of (040) face of ?-crystal measured by X-ray diffraction of 0.525 to 0.530 nm.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: September 1, 2020
    Assignee: OJI HOLDINGS CORPORATION
    Inventors: Toshiaki Taniike, Minoru Terano, Ikki Katada, Tadakazu Ishiwata, Masahiro Nakata
  • Publication number: 20200270372
    Abstract: The present invention provides a pentosan polysulfate having a uronic acid content of 0.0% by mass to 6.0% by mass, preferably a pentosan polysulfate having a structure represented by Formula I: wherein each R represents a hydrogen atom, —COCH3 or —SO3X, and at least one R represents —SO3X, wherein X represents a hydrogen atom or a monovalent or divalent metal, and n represents an integer of 1 or more and 30 or less; a pharmaceutically acceptable salt thereof; or a pharmaceutically acceptable solvate of the pentosan polysulfate or of a pharmaceutically acceptable salt thereof. The present invention further provides a method for producing pentosan polysulfate, the method comprising the steps of depolymerizing a plant-derived raw material to obtain neutral xylooligosaccharide and sulfating the neutral xylooligosaccharide, in this order.
    Type: Application
    Filed: September 11, 2018
    Publication date: August 27, 2020
    Applicant: OJI HOLDINGS CORPORATION
    Inventors: Kotaro ISHIKAWA, Takuro KASHIWAMURA, Takuya KATO, Toru KOGA, Suguru ISHIKAWA
  • Publication number: 20200261277
    Abstract: An adhesive tape (1) comprises a base material layer, an adhesive layer, and a release material layer, wherein two edges (11 and 12) extending in the longitudinal direction of the adhesive tape include parallel portions (11a and 12a), the length of one of the two edges (11 and 12) is greater than the length of the other, the ends of the two edges (11 and 12) are connected to the ends of two other edges (13 and 14), and two angles formed between the longer edge of the two edges (11 and 12) extending in the longitudinal direction and the two other edges (13 and 14) are acute angles.
    Type: Application
    Filed: January 19, 2017
    Publication date: August 20, 2020
    Applicant: OJI HOLDINGS CORPORATION
    Inventors: Mariko SUGAYA, Asami ODA, Ayako SHIRAI
  • Publication number: 20200256014
    Abstract: The present invention was accomplished in order to provide a method for producing a sheet containing fine fibers, which enables production of a sheet containing fine fibers without producing wrinkles. The present invention provides a method for producing a sheet containing fine fibers comprising a coating step of coating a dispersion containing fine fibers having a fiber diameter of 1000 nm or smaller on a base material, and a drying step of drying the dispersion containing fine fibers coated on the base material to form a sheet containing fine fibers.
    Type: Application
    Filed: April 30, 2020
    Publication date: August 13, 2020
    Applicant: OJI HOLDINGS CORPORATION
    Inventors: Eiichi MIKAMI, Mitsuru TSUNODA, Hayato FUSHIMI
  • Patent number: 10703955
    Abstract: The object is to provide a subterranean formation processing composition which has a highly stable viscosity against change in temperature and a high water stopping property. A subterranean formation processing composition comprising cellulose fibers wherein the composition contains ultrafine cellulose fibers having 0.14 to 2.5 mmol/g of a substituent is used. The substituent is preferably an anion group, particularly a phosphoric acid group. The present invention relates to various fluids which are used in well processing. The present invention relates to a method for processing a subterranean formation, for example, drilling of an exploratory well or a wildcat, an appraisal well, an exploratory well or an exploration well, a delineation well, a development well, a production well, an injection well, an observation well, and a service well; cementing; fracturing; and a method for producing petroleum resources.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: July 7, 2020
    Assignee: OJI HOLDINGS CORPORATION
    Inventors: Takayuki Shimaoka, Yuichi Noguchi, Ikue Homma, Mitsuru Tsunoda
  • Publication number: 20200207796
    Abstract: The present invention provides a reduced-cost method for producing an acidic xylooligosaccharide, the method including a depolymerization step of depolymerizing a plant-derived raw material and a deacetylation step of adding a base to a solution of the product of the depolymerization step to achieve a pH of 11 or higher. The present invention further provides an acidic xylooligosaccharide having an acetyl group content of 0 to 5.0 mass %. The acidic xylooligosaccharide of the present invention, which has an acetyl group content of 0 to 5.0 mass %, can be used as a starting material in a production method to thereby obtain pentosan polysulfate with a high yield.
    Type: Application
    Filed: August 31, 2017
    Publication date: July 2, 2020
    Applicant: OJI HOLDINGS CORPORATION
    Inventors: Kotaro ISHIKAWA, Takuro KASHIWAMURA, Takuya KATO, Toru KOGA, Suguru ISHIKAWA
  • Publication number: 20200208350
    Abstract: It is an object of the present invention to provide a method for producing ultrafine fibrous cellulose, which is capable of efficiently obtaining ultrafine fibrous cellulose having phosphoric acid groups with a high yield. The present invention relates to a method for producing fibrous cellulose having a fiber width of 1000 nm or less, comprising: a (A) of introducing phosphoric acid groups into cellulose fibers to form crosslinked structures via the phosphoric acid groups, thereby obtaining crosslinked phosphorylated cellulose fibers, a (B) of breaking some or all of the crosslinked structures to obtain crosslink-broken phosphorylated cellulose fibers, and a (C) of performing a mechanical treatment on the crosslink-broken phosphorylated cellulose fibers to obtain fibrous cellulose having a fiber width of 1000 nm or less, wherein, in the (A), crosslinked structures in an amount of 0.05 mmol/g or more and 2.
    Type: Application
    Filed: March 10, 2020
    Publication date: July 2, 2020
    Applicant: OJI HOLDINGS CORPORATION
    Inventors: Yuichi NOGUCHI, Ikue HOMMA, Yusuke MATSUBARA