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).
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Patent number: 11198281Abstract: 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: GrantFiled: March 25, 2019Date of Patent: December 14, 2021Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Yasuhiro Aoki, Katsuhiko Katsuma
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Patent number: 10696934Abstract: 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: GrantFiled: September 7, 2016Date of Patent: June 30, 2020Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Masanori Ookubo, Katsuhiko Katsuma, Takahiro Hiura
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Patent number: 10414889Abstract: 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: GrantFiled: September 7, 2016Date of Patent: September 17, 2019Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Takahiro Hiura, Kazushi Oda, Katsuhiko Katsuma
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Publication number: 20190217588Abstract: 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: ApplicationFiled: March 25, 2019Publication date: July 18, 2019Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.Inventors: Yasuhiro AOKI, Katsuhiko KATSUMA
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Publication number: 20180265656Abstract: 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: ApplicationFiled: September 7, 2016Publication date: September 20, 2018Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.Inventors: Kazushi ODA, Katsuhiko KATSUMA, Takahiro HIURA
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Publication number: 20180251615Abstract: 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: ApplicationFiled: September 7, 2016Publication date: September 6, 2018Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.Inventors: Kazushi ODA, Katsuhiko KATSUMA, Takahiro HIURA
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Publication number: 20180251613Abstract: 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: ApplicationFiled: September 7, 2016Publication date: September 6, 2018Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.Inventors: Takahiro HIURA, Kazushi ODA, Katsuhiko KATSUMA
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Publication number: 20180251614Abstract: 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: ApplicationFiled: September 7, 2016Publication date: September 6, 2018Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.Inventors: Takahiro HIURA, Katsuhiko KATSUMA
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Publication number: 20180245028Abstract: 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: ApplicationFiled: September 7, 2016Publication date: August 30, 2018Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.Inventors: Masanori OOKUBO, Katsuhiko KATSUMA, Takahiro HIURA
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Patent number: 8772400Abstract: 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: GrantFiled: July 27, 2006Date of Patent: July 8, 2014Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.Inventors: Shuichi Kitamura, Katsuhiko Katsuma, Mitsuo Shibutani, Toshihiro Shimizu
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Publication number: 20130249059Abstract: 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: ApplicationFiled: November 29, 2011Publication date: September 26, 2013Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.Inventors: Hiroaki Sato, Katsuhiko Katsuma, Kuniyasu Kato, Yuka Tsutsumi
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Publication number: 20090320910Abstract: 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 fabricatedType: ApplicationFiled: August 31, 2007Publication date: December 31, 2009Inventors: Takuya Matsui, Atsushi Masuda, Katsuhiko Katsuma, Seiichirou Hayakawa
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Publication number: 20090316264Abstract: 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: ApplicationFiled: July 27, 2006Publication date: December 24, 2009Applicant: The Nippon Synthetic Chemical Industry Co., Ltd.Inventors: Shuichi Kitamura, Katsuhiko Katsuma, Mitsuo Shibutani, Toshihiro Shimizu
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Publication number: 20080113173Abstract: 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: ApplicationFiled: November 1, 2005Publication date: May 15, 2008Applicant: The Nippon Synthetic Chemical Industry Co., Ltd.Inventors: Seiichirou Hayakawa, Katsuhiko Katsuma, Akihiko Chigami