Patents Assigned to Mitsubishi Paper Mills Limited
  • Publication number: 20210298291
    Abstract: The present invention relates to an auxiliary device for cryopreservation that is capable of stably holding a device for cryopreservation, facilitates coverage of a cell or tissue deposited on a strip with a cap without allowing the cap to come into contact with the cell or tissue, and enables quick immersion of the device for cryopreservation in liquid nitrogen. The present invention relates specifically to an auxiliary device for cryopreservation, including: a substrate; a cap holder; an observation section having an aperture structure; and a device body holder, the cap holder, the observation section having an aperture structure, and the device body holder being arranged in the substrate in a substantially straight line.
    Type: Application
    Filed: March 25, 2021
    Publication date: September 30, 2021
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Atsushi Matsuzawa
  • Publication number: 20210288382
    Abstract: It is an object of the present invention to provide a substrate for lithium ion battery separators which has high adhesion to an inorganic particle layer, can be made thin and is excellent in tensile strength and cuttability and a lithium ion battery separator including the substrate for lithium ion battery separators. The substrate for lithium ion battery separators which contains heat-resistant fibers and synthetic resin short fibers contains fibrillated heat-resistant fibers having a modified freeness of not more than 300 ml as the heat-resistant fibers and has a content of the fibrillated heat-resistant fibers having a modified freeness of not more than 300 ml of not less than 1.0 mass % to less than 5.0 mass % based on the total of all the fiber components contained in the substrate. The modified freeness is a value measured in accordance with JIS P8121-2:2012 except that an 80-mesh wire net having a wire diameter of 0.14 mm and an opening of 0.
    Type: Application
    Filed: September 1, 2017
    Publication date: September 16, 2021
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Toshihiro SHIGEMATSU, Tomohiro SATO, Makoto KATO, Masatoshi KITO, Noriko KASAI, Kukjin YOON, Wakana AIZAWA
  • Patent number: 11117411
    Abstract: A transfer paper used for a transfer printing method using sublimation textile ink, comprising a base paper and one or more coating layer(s) provided on at least one side of the base paper, wherein an outermost coating layer positioned on the outermost side with respect to the base paper contains at least a pigment, a binder, a polyacrylic acid salt and an acetylene glycol derivative, has image deterioration resistance, good color development property and excellent adhesion property.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: September 14, 2021
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Koji Igarashi, Jun Urasaki
  • Patent number: 11104173
    Abstract: The object is to provide a transfer paper having good image deterioration resistance, color development property and adhesion property. The object is achieved by a transfer paper for use in a transfer textile printing method using sublimation textile ink, which comprises a base paper and one or more coating layer(s) provided on at least one side of the base paper, wherein an outermost coating layer positioned on the outermost side with respect to the base paper contains at least a pigment and a binder, at least one of the pigment is amorphous silica, and the binder contains two or more different binders, and at least one of the binders is an ethylene-vinyl acetate copolymer.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: August 31, 2021
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Koji Igarashi, Jun Urasaki
  • Publication number: 20210235687
    Abstract: The present invention relates to a cryopreservation solution containing polyvinyl alcohol having a saponification degree of 84 mol % or lower.
    Type: Application
    Filed: April 2, 2019
    Publication date: August 5, 2021
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Atsushi Matsuzawa
  • Publication number: 20210219433
    Abstract: The present invention aims to provide a method of producing a pattern-transferred product with simple steps, the method being capable of producing a pattern-transferred product having good adhesion between a transferred pattern and the transfer-receiving body. The method of producing a pattern-transferred product of the present invention includes a step of forming a transfer pattern on a dissociation layer of a transfer sheet including at least a porous layer on a support and the dissociation layer on the porous layer; a transferring step, the step being selected from a step of transferring the transfer pattern to a transfer-receiving body having an adhesive surface or a step of transferring the transfer pattern to a transfer-receiving body via an adhesive material; and a step of removing adhesion from the surface of the transfer-receiving body or from the adhesive material.
    Type: Application
    Filed: April 25, 2019
    Publication date: July 15, 2021
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Shigeki Shino, Norihiko Gokan, Yukio Tokunaga
  • Patent number: 10990010
    Abstract: The present invention is a photosensitive resin composition to be used in an etching process in which an etching treatment is conducted with an etching solution containing hydrofluoric acid or ammonium fluoride. The photosensitive resin composition comprises at least (A) an acid-modified epoxy acrylate, (B) a photopolymerization initiator, (C) a blocked isocyanate compound, and (D) a filler. The etching process involves forming a photosensitive resin layer comprising said photosensitive resin composition, on at least one surface of a substrate; exposing and then developing the photosensitive resin layer; baking the photosensitive layer; and conducting an etching treatment with an etching solution containing hydrofluoric acid or ammonium fluoride.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: April 27, 2021
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Munetoshi Irisawa, Norihiko Gokan, Kunihito Kajiya, Yuji Toyoda, Kunihiro Nakagawa
  • Publication number: 20210108373
    Abstract: The present invention provides a coated printing paper having a base paper, and a coating layer arranged on at least one surface of the base paper, wherein, an outermost coating layer positioned on the outermost side with respect to the base paper contains at least kaolin, calcium carbonate, starches, a latex, a dispersant, a lubricant and a cationic resin, in the outermost coating layer, a total amount of the starches and the latex is 5 parts by mass or more and 13 parts by mass or less, and an amount of the dispersant is 0.02 part by mass or more and 0.3 part by mass or less, an amount of the lubricant is 0.25 part by mass or more and 0.6 part by mass or less, and an amount of the cationic resin is 0.25 part by mass or more and 0.
    Type: Application
    Filed: March 13, 2018
    Publication date: April 15, 2021
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Jun URASAKI, Masanori NAGOSHI, Hideki TAKADA
  • Patent number: 10964986
    Abstract: An object of the invention is to provide a separator for an electrochemical element in which the occurrence of fluff on the sheet surface thereof is suppressed and an internal short-circuit defect rate is low, and the invention provides a separator for an electrochemical element, comprising: a fibrillated solvent spun cellulose fiber; and a synthetic fiber, wherein the separator for an electrochemical element contains, as the synthetic fiber, from 5 to 40% by weight of a core-sheath type composite fiber having a fiber diameter of 6.0 ?m or less which is composed of: a core component made of a resin having a melting point of 160° C. or more; and a sheath component made of polyethylene.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: March 30, 2021
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Keisuke Ooyama, Takao Masuda
  • Publication number: 20210074981
    Abstract: A coating solution for lithium ion battery separators which comprises inorganic particles, an organic polymer binder and carboxymethyl cellulose having an etherification rate of 1.10 to 2.00 or a salt thereof, or a coating solution for lithium ion battery separators comprising inorganic particles containing magnesium hydroxide having a linseed oil absorption of 30 to 80 (g/100 g), and a separator having a coating layer formed from the coating solution on a substrate and high safety and low internal resistance.
    Type: Application
    Filed: January 23, 2019
    Publication date: March 11, 2021
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Tomohiro SATO, Hideaki SAEGUSA, Makoto KATO, Noriko KASAI, Kukjin YOON
  • Patent number: 10906344
    Abstract: A printing paper having a base paper and an outermost coating layer is provided, and satisfies at least one of the following characteristics (I), (II) and (III): (I) when an aqueous solution having a surface tension of 20 mN/m is dropped on the side having the outermost coating layer of the printing paper, a contact angle between the droplet and the outermost coating layer is 40° or more and 65° or less; (II) for the side having the outermost coating layer of the printing paper, a transfer amount of an aqueous solution having a surface tension of 20 mN/m at a contact time of 1 second as determined by the Bristow method is 5.0 ml/m2 or more and 12.0 ml/m2 or less; and (III) on the surface of the outermost coating layer of the printing paper, a maximum peak value of specular reflection light quantity of a point image is 2,000 or more and 30,000 or less.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: February 2, 2021
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Masanori Nagoshi, Tetsuya Nishi, Toru Kaneko, Hideki Takada, Masayuki Takishiro
  • Publication number: 20210010765
    Abstract: An object of the present invention is to provide a paper for total heat exchange element, which has both of the heat transfer property and the moisture permeation property and is also excellent in the gas barrier property, and the present invention relates to a paper for total heat exchange element including a base paper containing a beaten natural pulp and a hygroscopic agent applied to the base paper, wherein a ratio of a fine fraction having a fiber length of 0.05 mm or less in the beaten natural pulp is from 10 to 25%.
    Type: Application
    Filed: March 27, 2019
    Publication date: January 14, 2021
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Yoshiyuki HAMASAKI
  • Patent number: 10818898
    Abstract: A separator for electrochemical elements includes beaten solvent-spun cellulose fibers and rayon fibers having a fiber diameter of 9.5 ?m or less. More preferably, the separator for electrochemical elements has a content of the rayon fibers relative to all fibers of 10 to 25% by mass, and can be applied to electrochemical elements such as electric double layer capacitors, hybrid capacitors, redox capacitors, and lithium secondary batteries. The separator can provide low internal short circuit failure rates and high surface strength.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: October 27, 2020
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Toshihiro Shigematsu, Masatoshi Kito, Keisuke Ooyama
  • Publication number: 20200273600
    Abstract: An optically transparent conductive material includes: an optically transparent support; and an optically transparent conductive layer on the optically transparent support, the optically transparent conductive layer being electrically connected to a terminal area and including sensor parts extending in one direction, wherein the sensor parts are each made of an irregular net-like pattern of thin metal wires, each sensor part has varying widths and includes corridor portions where the width of the sensor part is relatively narrow and other portions where the width of the sensor part is relatively wide, and the following relation is satisfied: 1.05X?A?1.20X, where A is an average number of intersections in the net-like pattern of thin metal wires per unit area in the corridor portions, and X is an average number of intersections in the net-like pattern of thin metal wires per unit area in other portions.
    Type: Application
    Filed: September 10, 2018
    Publication date: August 27, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Kazuhiko Sunada
  • Publication number: 20200181837
    Abstract: The object is to provide a transfer paper having good image deterioration resistance, color development property and adhesion property. The object is achieved by a transfer paper for use in a transfer textile printing method using sublimation textile ink, which comprises a base paper and one or more coating layer(s) provided on at least one side of the base paper, wherein an outermost coating layer positioned on the outermost side with respect to the base paper contains at least a pigment and a binder, at least one of the pigment is amorphous silica, and the binder contains two or more different binders, and at least one of the binders is an ethylene-vinyl acetate copolymer.
    Type: Application
    Filed: April 9, 2018
    Publication date: June 11, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Koji IGARASHI, Jun URASAKI
  • Patent number: 10624335
    Abstract: The present invention relates to a device for cryopreservation of a cell or tissue, including a deposition part on which a cell or tissue is to be deposited, the deposition part having a layer containing a water-soluble polymeric compound on an outermost surface of the deposition part; and a method of cryopreservation using the device.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: April 21, 2020
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Atsushi Matsuzawa, Katsumitsu Susaki, Yukio Tokunaga
  • Publication number: 20200114674
    Abstract: A printing paper having a base paper, and one or more coating layer(s) arranged on at least one surface of the base paper, wherein; in the coating layer(s), an outermost coating layer positioned on the outermost side with respect to the base paper contains at least a pigment, a binder, a lubricant, a dispersant and a cationic resin, wherein the pigment in the outermost coating layer contains kaolin and calcium carbonate, a content of the kaolin and the calcium carbonate is 80 parts by mass or more based on 100 parts by mass of the pigment in the outermost coating layer, and a mass content ratio of the kaolin to the calcium carbonate in the outermost coating layer is 1:9 to 6:4, and the printing paper satisfies at least one of the following characteristics (I), (II) and (III): (I) when an aqueous solution having a surface tension of 20 mN/m is dropped on the side having the outermost coating layer of the printing paper, a contact angle between the droplet and the outermost coating layer is 40° or more and 6
    Type: Application
    Filed: March 12, 2018
    Publication date: April 16, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Masanori NAGOSHI, Tetsuya NISHI, Toru KANEKO, Hideki TAKADA, Masayuki TAKISHIRO
  • Publication number: 20200113176
    Abstract: The present invention aims to provide a device for cryopreservation which enables easy and reliable cryopreservation of a cell or tissue. The device for cryopreservation of a cell or tissue of the present invention includes a deposition part on which a cell or tissue is to be deposited together with a preservation solution, wherein a surface of the deposition part includes a protrusion for holding a cell or tissue and a recess for storing a preservation solution.
    Type: Application
    Filed: June 8, 2018
    Publication date: April 16, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Kakeru Yoshida, Atsushi Matsuzawa, Yukio Tokunaga
  • Publication number: 20200095726
    Abstract: The object is to provide a transfer textile printing method that satisfies general versatility, simplicity, fixing property, color development property and fineness. The object is achieved by a transfer textile printing method comprising a step (1) of preparing a transfer paper, a step (2) of forming a pattern using a pigment ink on the transfer paper to obtain a printed transfer paper, a step (3) of bringing the printed transfer paper and a textile printing medium into close contact with each other and heating and pressurizing, a step (4) of performing a heat treatment without pressurizing while the printed transfer paper and the textile printing medium remain in close contact with each other, and a step (5) of removing the printed transfer paper from the textile printing medium, wherein the transfer textile printing method comprises the step (3), the step (4), and the step (5) in this order.
    Type: Application
    Filed: April 9, 2018
    Publication date: March 26, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Koji IGARASHI
  • Publication number: 20200091486
    Abstract: It is an object of the present invention to provide a lithium ion battery separator which can be made thin, is excellent in tensile strength and cuttability and has low internal resistance, a low incidence of internal short circuit failure and high cycle characteristics and a lithium ion battery including the separator. In a lithium ion battery separator containing heat-resistant fibers and synthetic resin short fibers, fibrillated heat-resistant fibers having a modified freeness of not more than 300 ml are contained as the heat-resistant fibers, and the content of the fibrillated heat-resistant fibers having a modified freeness of not more than 300 ml is not less than 1.0 mass % to less than 5.0 mass % based on the total of all the fiber components contained in the separator. Modified freeness: This is a value measured in accordance with JIS P8121-2:2012 except that an 80-mesh wire net having a wire diameter of 0.14 mm and an opening of 0.
    Type: Application
    Filed: December 18, 2017
    Publication date: March 19, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Toshihiro SHIGEMATSU