Patents by Inventor Katsuhiko Katsuma

Katsuhiko Katsuma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11198281
    Abstract: The present invention relates to a laminated film for fiber adhesion and/or fiber sheet surface protection in which a layer [I] containing a thermosetting composition [i] and a support film [II] are laminated, wherein the thermosetting composition [i] contains a thermal polymerization initiator (C) having a 10-hour half-life temperature of 65° C. or higher.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: December 14, 2021
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yasuhiro Aoki, Katsuhiko Katsuma
  • Patent number: 10696934
    Abstract: A water-soluble film contains a polyvinyl alcohol resin (A), and has a complete dissolution time (T) and a curl area percentage (S), wherein a product (T×S) of the complete dissolution time (T) and the curl area percentage (S) satisfies the following expression (1): 1000?(Complete dissolution time (T))×(Curl area percentage (S))?7000??(1) The water-soluble film satisfies contradictory property requirements, i.e., satisfactory solubility and curl suppressing property, for example, even if being formed by using an acid-modified PVA resin.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: June 30, 2020
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Masanori Ookubo, Katsuhiko Katsuma, Takahiro Hiura
  • Patent number: 10414889
    Abstract: A water-soluble film is provided, which has excellent mechanical properties (higher tensile strength and higher tensile elongation) and can be formed into an excellent package which is free from deterioration of the tension of the water-soluble film over time even if containing liquid such as a liquid detergent packaged therein. The water-soluble film includes: (A) a polyvinyl alcohol resin; and (B) a plasticizer; wherein the plasticizer (B) includes a polyalcohol (b1) having a melting point of at least 80° C. and a polyalcohol (b2) having a melting point of not higher than 50° C.; wherein the plasticizer (B) is present in a proportion of at least 25 parts by weight based on 100 parts by weight of the polyvinyl alcohol resin (A).
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: September 17, 2019
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Takahiro Hiura, Kazushi Oda, Katsuhiko Katsuma
  • Publication number: 20190217588
    Abstract: The present invention relates to a laminated film for fiber adhesion and/or fiber sheet surface protection in which a layer [I] containing a thermosetting composition [i] and a support film [II] are laminated, wherein the thermosetting composition [i] contains a thermal polymerization initiator (C) having a 10-hour half-life temperature of 65° C. or higher.
    Type: Application
    Filed: March 25, 2019
    Publication date: July 18, 2019
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Yasuhiro AOKI, Katsuhiko KATSUMA
  • Publication number: 20180265656
    Abstract: A water-soluble film comprises a polyvinyl alcohol resin (A), wherein a difference (?R) between a phase retardation (R?) of one of opposite surfaces (? surface) of the water-soluble film and a phase retardation (R?) of the other surface (? surface) of the water-soluble film is not greater than 8 nm as measured on a middle portion of the water-soluble film with respect to a transverse direction (TD) of the water-soluble film. Therefore, the water-soluble film has a reduced difference in crystallinity between the front and back surfaces thereof and, hence, is less liable to be curled to thereby ensure a higher productivity.
    Type: Application
    Filed: September 7, 2016
    Publication date: September 20, 2018
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Kazushi ODA, Katsuhiko KATSUMA, Takahiro HIURA
  • Publication number: 20180251613
    Abstract: A water-soluble film is provided, which has excellent mechanical properties (higher tensile strength and higher tensile elongation) and can be formed into an excellent package which is free from deterioration of the tension of the water-soluble film over time even if containing liquid such as a liquid detergent packaged therein. The water-soluble film includes: (A) a polyvinyl alcohol resin; and (B) a plasticizer; wherein the plasticizer (B) includes a polyalcohol (b1) having a melting point of at least 80° C. and a polyalcohol (b2) having a melting point of not higher than 50° C.; wherein the plasticizer (B) is present in a proportion of at least 25 parts by weight based on 100 parts by weight of the polyvinyl alcohol resin (A).
    Type: Application
    Filed: September 7, 2016
    Publication date: September 6, 2018
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Takahiro HIURA, Kazushi ODA, Katsuhiko KATSUMA
  • Publication number: 20180251614
    Abstract: A water-soluble film for packaging a liquid detergent containing a polyalcohol (Y) comprises a polyvinyl alcohol resin (A) and a polyalcohol (X), wherein the proportion x (wt. %) of the polyalcohol (X) with respect to the polyvinyl alcohol resin (A) and the proportion y (wt. %) of the polyalcohol (Y) contained in the liquid detergent satisfy the following expression: x>y The water-soluble film can be formed into an excellent package which is free from deterioration in the tension of the water-soluble film over time even with the liquid detergent packaged therein.
    Type: Application
    Filed: September 7, 2016
    Publication date: September 6, 2018
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Takahiro HIURA, Katsuhiko KATSUMA
  • Publication number: 20180251615
    Abstract: A water-soluble film is provided which is highly water-soluble and can be formed into an excellent package which has a higher film strength and a higher seal portion peel strength and hence is free from liquid leakage even with liquid such as a liquid detergent packaged therein. A chemical agent package produced by packaging a chemical agent with the water-soluble film is also provided. The water-soluble film comprises a polyvinyl alcohol resin (A), and has an inter-film peel strength of at least 70 g/15 mm as measured after two pieces of the water-soluble film are moisture-conditioned in an environment at 23° C. at 50% RH for 1 day, then bonded to each other with water and allowed to stand for 1 minute.
    Type: Application
    Filed: September 7, 2016
    Publication date: September 6, 2018
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Kazushi ODA, Katsuhiko KATSUMA, Takahiro HIURA
  • Publication number: 20180245028
    Abstract: A water-soluble film contains a polyvinyl alcohol resin (A), and has a complete dissolution time (T) and a curl area percentage (S), wherein a product (T×S) of the complete dissolution time (T) and the curl area percentage (S) satisfies the following expression (1): 1000?(Complete dissolution time (T))×(Curl area percentage (S))?7000??(1) The water-soluble film satisfies contradictory property requirements, i.e., satisfactory solubility and curl suppressing property, for example, even if being formed by using an acid-modified PVA resin.
    Type: Application
    Filed: September 7, 2016
    Publication date: August 30, 2018
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Masanori OOKUBO, Katsuhiko KATSUMA, Takahiro HIURA
  • Patent number: 8772400
    Abstract: The present invention provides a polyvinyl alcohol-based film for optical uses, which is excellent in stretching property and is used for producing a polarizing film excellent in polarization performance throughout the visible light wavelength range, particularly in the vicinity of the wavelength of 460 nm. The invention relates to a polyvinyl alcohol-based film for optical uses comprising a polyvinyl alcohol-based resin, wherein the polyvinyl alcohol-based resin is composed of only a polyvinyl alcohol-based resin (A) containing a 1,2-glycol bond at a side chain and the amount of the 1,2-glycol bond at a side chain is from 0.01 to 6% by mol, or a polyvinyl alcohol-based film for optical uses comprising a polyvinyl alcohol-based resin, wherein the polyvinyl alcohol-based resin includes a polyvinyl alcohol-based resin (A) containing a 1,2-glycol bond at a side chain and a polyvinyl alcohol-based resin (B) other than the polyvinyl alcohol-based resin (A) and satisfies the following expression (1): 0.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: July 8, 2014
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Shuichi Kitamura, Katsuhiko Katsuma, Mitsuo Shibutani, Toshihiro Shimizu
  • Publication number: 20130249059
    Abstract: Disclosed is a coating liquid for impurity diffusion comprising: (A) a polyvinyl alcohol resin having a 1,2-diol structural unit represented by the following general formula (1): wherein R1, R2 and R3 each independently represent a hydrogen atom or an organic group, X represents a single bond or a bond chain, and R4, R5 and R6 each independently represent a hydrogen atom or an organic group; (B) an impurity; and (C) water. The coating liquid for impurity diffusion is highly stable, and exhibits excellent printing properties; for example, when printing is continuously carried out for a longer period of time or resumed after a pause. Accordingly, the coating liquid for impurity diffusion is particularly suitable as a coating liquid for impurity diffusion for use for applying by screen printing.
    Type: Application
    Filed: November 29, 2011
    Publication date: September 26, 2013
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Hiroaki Sato, Katsuhiko Katsuma, Kuniyasu Kato, Yuka Tsutsumi
  • Publication number: 20090320910
    Abstract: It relates to a transparent electrode substrate for a solar cell comprising a resin film [I] 1 and a film 2 comprising a metal oxide fabricated thereon, wherein the resin film [I] 1 is a fabricated body obtained by curing a photocurable composition and having an unevenness on the side of the resin film [I] 1 on which the film 2 comprising a metal oxide is fabricated
    Type: Application
    Filed: August 31, 2007
    Publication date: December 31, 2009
    Inventors: Takuya Matsui, Atsushi Masuda, Katsuhiko Katsuma, Seiichirou Hayakawa
  • Publication number: 20090316264
    Abstract: The present invention provides a polyvinyl alcohol-based film for optical uses, which is excellent in stretching property and is used for producing a polarizing film excellent in polarization performance throughout the visible light wavelength range, particularly in the vicinity of the wavelength of 460 nm. The invention relates to a polyvinyl alcohol-based film for optical uses comprising a polyvinyl alcohol-based resin, wherein the polyvinyl alcohol-based resin is composed of only a polyvinyl alcohol-based resin (A) containing a 1,2-glycol bond at a side chain and the amount of the 1,2-glycol bond at a side chain is from 0.01 to 6% by mol, or a polyvinyl alcohol-based film for optical uses comprising a polyvinyl alcohol-based resin, wherein the polyvinyl alcohol-based resin includes a polyvinyl alcohol-based resin (A) containing a 1,2-glycol bond at a side chain and a polyvinyl alcohol-based resin (B) other than the polyvinyl alcohol-based resin (A) and satisfies the following expression (1): 0.
    Type: Application
    Filed: July 27, 2006
    Publication date: December 24, 2009
    Applicant: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Shuichi Kitamura, Katsuhiko Katsuma, Mitsuo Shibutani, Toshihiro Shimizu
  • Publication number: 20080113173
    Abstract: The present invention provides a polyvinyl alcohol film having a film thickness of 30 to 70 ?m and a kinetic friction coefficient against a stainless-steel roll of 0.03 or less and a process for producing a polyvinyl alcohol film.
    Type: Application
    Filed: November 1, 2005
    Publication date: May 15, 2008
    Applicant: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Seiichirou Hayakawa, Katsuhiko Katsuma, Akihiko Chigami