Patents by Inventor Taketo Kato

Taketo Kato 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).

  • Publication number: 20240317907
    Abstract: Composition including (a) a fluoropolymer; and (b1) at least one of a compound represented by the formula (4) ((H—(CF2)7—COO)pM1) or the formula (4?) ((H—(CF2)8—COO)pM1) of the present disclosure, both respectively in an amount of 100 ppb or less relative to the fluoropolymer, or (b2) at least one of a compound represented by the formula (5) ((H—(CF2)13—COO)pM1) or the formula (5?) ((H—(CF2)14—COO)pM1) of the present disclose, both respectively in an amount of 100 ppb or less relative to the fluoropolymer.
    Type: Application
    Filed: May 3, 2024
    Publication date: September 26, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Taketo KATO, Satoru YONEDA, Manabu FUJISAWA, Kazuya ASANO, Takahiro KITAHARA, Masahiro HIGASHI, Akiyoshi YAMAUCHI, Sumi ISHIHARA, Yosuke KISHIKAWA, Shinnosuke NITTA, Marina NAKANO, Hirotoshi YOSHIDA, Yoshinori NANBA, Kengo ITO, Chiaki OKUI, Hirokazu AOYAMA, Masamichi SUKEGAWA, Taku YAMANAKA, Yuuji TANAKA, Kenji ICHIKAWA, Yohei FUJIMOTO, Hiroyuki SATO
  • Publication number: 20240294401
    Abstract: A method for removing a fluorine-containing compound from discharge water, which includes bringing discharge water containing two or more fluorine-containing compounds represented by the following general formula (1) or (2) into contact with an adsorbent so as to adsorb the two or more fluorine-containing compounds: (H—(CF2)m—COO)pM1??General Formula (1): wherein m is 3 to 19, M1 is H, a metal atom, NRb4, where Rb is the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent; and p is 1 or 2; (H—(CF2)n—SO3)qM2??General Formula (2): wherein n is 4 to 20; M2 is H, a metal atom, NRb4, where Rb is the same as above, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent; and q is 1 or 2.
    Type: Application
    Filed: April 29, 2024
    Publication date: September 5, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takahiro TAIRA, Tadao Hayashi, Chiaki Okui, Ryou Hatayama, Michinobu Koizumi, Taketo Kato, Yuuji Tanaka, Hirotoshi Yoshida
  • Publication number: 20240287263
    Abstract: The disclosure aims to provide a polytetrafluoroethylene fine powder containing less water and less impurities. Provided is a polytetrafluoroethylene fine powder substantially free from water and a fluorine-containing compound having a molecular weight of 1000 or less.
    Type: Application
    Filed: March 27, 2024
    Publication date: August 29, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Taketo KATO, Kohei Yasuda, Taku Yamanaka, Masayoshi Miyamoto, Kenta Murayama, Ryota Usami, Hirotoshi Yoshida, Hiroyuki Sato, Emi Yamamoto, Kenta Nishimura, Nobuki Uraoka
  • Publication number: 20240282968
    Abstract: The disclosure aims to provide a polytetrafluoroethylene powder for an electrode binder which can not only reduce or prevent gas generation inside a battery cell and deterioration of battery characteristics but also improve the electrode strength, an electrode binder, an electrode mixture, an electrode, and a secondary battery. Provided is a polytetrafluoroethylene powder for use as an electrode binder, the polytetrafluoroethylene having a standard specific gravity of 2.200 or less and being substantially free from water.
    Type: Application
    Filed: March 27, 2024
    Publication date: August 22, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Taketo KATO, Takaya YAMADA, Kohei YASUDA, Taku YAMANAKA, Junpei TERADA, Masahiko YAMADA, Ryota USAMI, Hiroyuki SATO, Emi YAMAMOTO, Kenta NISHIMURA
  • Publication number: 20240243292
    Abstract: The disclosure aims to provide a polytetrafluoroethylene powder for an electrode binder with excellent handleability, an electrode binder and an electrode mixture containing the electrode binder, an electrode, and a secondary battery. Provided is a polytetrafluoroethylene powder for use as an electrode binder, the polytetrafluoroethylene powder having an apparent density of 0.40 g/mL or higher and a powder particle size of 400 ?m or greater.
    Type: Application
    Filed: March 27, 2024
    Publication date: July 18, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Taketo KATO, Takaya YAMADA, Kohei YASUDA, Taku YAMANAKA, Junpei TERADA, Masayoshi MIYAMOTO
  • Publication number: 20240243293
    Abstract: The disclosure aims to provide a polytetrafluoroethylene powder for an electrode binder which is a sustainable product and can reduce or prevent gas generation inside a battery cell and deterioration of battery characteristics, an electrode binder, an electrode mixture, an electrode, and a secondary battery. Provided is a polytetrafluoroethylene powder for use as an electrode binder, the polytetrafluoroethylene powder being substantially free from water and a fluorine-containing compound having a molecular weight of 1000 or less.
    Type: Application
    Filed: March 27, 2024
    Publication date: July 18, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Taketo KATO, Takaya Yamada, Kohei Yasuda, Taku Yamanaka, Junpei Terada, Masayoshi Miyamoto, Kenta Murayama, Ryota Usami, Hirotoshi Yoshida
  • Patent number: 12030790
    Abstract: A method for removing a fluorine-containing compound from discharge water, which includes bringing discharge water containing two or more fluorine-containing compounds represented by the following general formula (1) or (2) into contact with an adsorbent so as to adsorb the two or more fluorine-containing compounds: (H—(CF2)m—COO)pM1??General Formula (1): wherein m is 3 to 19, M1 is H, a metal atom, NRb4, where Rb is the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent; and p is 1 or 2; (H—(CF2)n—SO3)qM2??General Formula (2): wherein n is 4 to 20; M2 is H, a metal atom, NRb4, where Rb is the same as above, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent; and q is 1 or 2.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: July 9, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Takahiro Taira, Tadao Hayashi, Chiaki Okui, Ryou Hatayama, Michinobu Koizumi, Taketo Kato, Yuuji Tanaka, Hirotoshi Yoshida
  • Patent number: 12012470
    Abstract: A composition including a fluoropolymer and substantially free from a compound represented by the following formula (3): (H—(CF2)8—SO3)qM2, wherein M2 is H, a metal atom, NR54, imidazolium optionally containing a substituent, pyridinium optionally containing a substituent, or phosphonium optionally containing a substituent; R5s are each H or an organic group and are the same as or different from each other; and q is 1 or 2.
    Type: Grant
    Filed: October 26, 2022
    Date of Patent: June 18, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Taketo Kato, Satoru Yoneda, Manabu Fujisawa, Kazuya Asano, Takahiro Kitahara, Masahiro Higashi, Akiyoshi Yamauchi, Sumi Ishihara, Yosuke Kishikawa, Shinnosuke Nitta, Marina Nakano, Hirotoshi Yoshida, Yoshinori Nanba, Kengo Ito, Chiaki Okui, Hirokazu Aoyama, Masamichi Sukegawa, Taku Yamanaka, Yuuji Tanaka, Kenji Ichikawa, Yohei Fujimoto, Hiroyuki Sato
  • Patent number: 12006407
    Abstract: Powder including low molecular weight polytetrafluoroethylene having a melt viscosity of 1×102 to 7×105 Pa·s at 380° C., having a melt viscosity of 1×102 to 7×105 Pa·s at 380° C., having an average particle size of 1.0 to 50 ?m, and containing 30 or more carboxyl groups at ends of the molecule chain per 106 carbon atoms in the main chain, wherein the powder is substantially free from C8-C14 perfluorocarboxylic acids and salts thereof.
    Type: Grant
    Filed: January 30, 2023
    Date of Patent: June 11, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Ken Yoshida, Hirotoshi Yoshida, Keisuke Hagi, Masayuki Tsuji, Taketo Kato, Yuuji Tanaka, Taku Yamanaka, Kazuya Kawahara, Masamichi Sukegawa, Kazutaka Hosokawa
  • Publication number: 20240178399
    Abstract: Composite binder materials for energy storage applications are disclosed. The composite binder materials include a fluoropolymer, such as polytetrafluoroethylene (PTFE), integrated with a conductive additive and a low-melting point thermoplastic. Methods of making the composite binder materials are also disclosed. The methods include providing an emulsion of the fluoropolymer, mixing the low-melting point thermoplastic and the particulate conductive additive into the emulsion of the fluoropolymer to form a mixture, and coagulating the mixture to produce a coagulum including the composite binder material. The disclosure also provides a binder powder for an electrochemical device capable of providing an electrode mixture sheet having excellent uniformity of tensile strength. The disclosure relates to a binder powder for an electrochemical device, containing a non-fibrillated fibrillatable resin and a thermoplastic polymer.
    Type: Application
    Filed: January 12, 2024
    Publication date: May 30, 2024
    Applicants: DAIKIN AMERICA, INC., DAIKIN INDUSTRIES, LTD.
    Inventors: Alec FALZONE, Emily Grumbles, Wade Simpson, Joseph Sunstrom, Ronald Hendershot, Taku Yamanaka, Taketo Kato, Takaya Yamada, Junpei Terada, Masato Tokuda, Kenta Nishimura
  • Publication number: 20240166777
    Abstract: A method for producing a high purity fluoropolymer-containing composition, the method including the steps of performing a fluorine radical treatment on a composition containing a fluoropolymer and a polymer (I) containing a polymerization unit (I) derived from a monomer (I) represented by the general formula (I) to obtain a high purity fluoropolymer-containing composition: CX1X3?CX2R(—CZ1Z2-A0)m??(I) wherein X1 and X3 are each independently F, Cl, H, or CF3; X2 is H, F, an alkyl group, or a fluorine-containing alkyl group; A0 is an anionic group; R is a linking group; Z1 and Z2 are each independently H, F, an alkyl group, or a fluorine-containing alkyl group; and m is an integer of 1 or more.
    Type: Application
    Filed: December 29, 2023
    Publication date: May 23, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takahiro TAIRA, Kazuhiro MISHIMA, Chiaki OKUI, Hirotoshi YOSHIDA, Taketo KATO, Taku YAMANAKA
  • Publication number: 20240150505
    Abstract: A method for producing a polytetrafluoroethylene powder, which includes subjecting tetrafluoroethylene to suspension polymerization in an aqueous medium to prepare a suspension-polymerized particle of non melt-processible polytetrafluoroethylene, drying the suspension-polymerized particle to prepare a dry particle, subjecting the dry particle to fluorine radical treatment to prepare a fluorine radical-treated particle, and crushing the fluorine radical-treated particle to produce a polytetrafluoroethylene powder. Also disclosed is a polytetrafluoroethylene formed article obtained by forming the polytetrafluoroethylene powder, as well as a polytetrafluoroethylene compression-molded article obtained by compression molding the polytetrafluoroethylene powder.
    Type: Application
    Filed: December 27, 2023
    Publication date: May 9, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takahiro TAIRA, Kazuhiro Mishima, Takayuki Tanaka, Takeki Kusunoki, Masayoshi Miyamoto, Tomoki Minamiyama, Mitsuo Tsukamoto, Kenji Ichikawa, Takuya Yamabe, Hirotoshi Yoshida, Taketo Kato, Taku Yamanaka
  • Publication number: 20240150533
    Abstract: A method for producing a polytetrafluoroethylene particle, which includes subjecting tetrafluoroethylene to suspension polymerization in an aqueous medium to prepare a suspension-polymerized particle of polytetrafluoroethylene, washing and then crushing the suspension-polymerized particle or crushing the suspension-polymerized particle with washing to prepare a crushed particle, dehydrating the crushed particle to prepare a crushed particle having a water content of 40% by mass or less, and subjecting the dehydrated crushed particle to heat treatment to produce a polytetrafluoroethylene particle.
    Type: Application
    Filed: December 29, 2023
    Publication date: May 9, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takayuki TANAKA, Masayoshi Miyamoto, Tomoki Minamiyama, Takeki Kusunoki, Tokahiro Taira, Takuya Yamabe, Hirotoshi Yoshida, Taketo Kato, Taku Yamanaka, Mitsuo Tsukamoto
  • Publication number: 20240141155
    Abstract: Provided is a method for producing a fluoropolymer composition, comprising bringing a fluoropolymer raw material into contact with an oxidizing agent, wherein the fluoropolymer raw material is obtained by polymerizing a fluoromonomer in an aqueous medium in the presence of a polymer (I) containing a polymerization unit (I) derived from a monomer (I) represented by the general formula (I). CX1X3?CX2R(—CZ1Z2-A0)m??(I) wherein X1 and X3 are each independently F, Cl, H, or CF3; X2 is H, F, an alkyl group, or a fluorine-containing alkyl group; A0 is an anionic group; R is a linking group; Z1 and Z2 are each independently H, F, an alkyl group, or a fluorine-containing alkyl group; and m is an integer of 1 or more.
    Type: Application
    Filed: December 26, 2023
    Publication date: May 2, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Yoshinori NANBA, Kenji ICHIKAWA, Taketo KATO, Taku YAMANAKA
  • Publication number: 20240117087
    Abstract: A method for producing a fluoropolymer which method includes polymerizing a perfluoromonomer in an aqueous medium in the presence of a polymer (1) to obtain a fluoropolymer, wherein the content of a polymerized unit derived from the perfluoromonomer in the fluoropolymer is 90 mol % or more based on all polymerized units of the fluoropolymer, the polymer (1) is a polymer of a monomer (1) represented by the general formula (1): CF2?CF—O—R-(Rf-SO3M)m, a polymerized unit (1) derived from the monomer (1) in the polymer (1) is 50% by mass or more based on all polymerized units of the polymer (1), and the content of a dimer and a trimer of the monomer (1) in the polymer (1) is 1.0% by mass or less based on the polymer (1).
    Type: Application
    Filed: November 17, 2023
    Publication date: April 11, 2024
    Applicant: DAIKIN INDUSTRIES, LTD
    Inventors: Yoshinori NANBA, Rina TAMAI, Takuma IWASAKA, Soushi TSUCHIYA, Kenji ICHIKAWA, Taketo KATO, Masaki IRIE, Taku YAMANAKA
  • Publication number: 20240117077
    Abstract: A composition containing polytetrafluoroethylene and substantially free from a compound represented by Formula (3): (H—(CF2)8—SO3)qM2 wherein M2 is H, a metal atom, NR54 (where R5s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and q is 1 or 2. Also disclosed is a molded boy including the composition.
    Type: Application
    Filed: November 7, 2023
    Publication date: April 11, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takahiro TAIRA, Kazuhiro MISHIMA, Chiaki OKUI, Tadao HAYASHI, Hirotoshi YOSHIDA, Yuuji TANAKA, Masayoshi MIYAMOTO, Taku YAMANAKA, Taketo KATO
  • Patent number: 11952441
    Abstract: A method for producing polytetrafluoroethylene, which includes polymerizing tetrafluoroethylene in an aqueous medium in the presence of a nucleating agent and a hydrocarbon anionic surfactant to obtain polytetrafluoroethylene. A total amount of the nucleating agent and the hydrocarbon anionic surfactant at the initiation of polymerization is more than 50 ppm based on the aqueous medium.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: April 9, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Taketo Kato, Yohei Fujimoto, Kenji Ichikawa, Hiroyuki Sato, Yoshinori Nanba, Hirotoshi Yoshida, Kengo Ito, Chiaki Okui, Masamichi Sukegawa, Taku Yamanaka
  • Publication number: 20240034901
    Abstract: A coating material composition containing a fluororesin, a polymer (I) containing a polymerization unit (I) derived from a monomer represented by the general formula (I) below, and an aqueous medium, wherein the content of the polymer (I) is 2,000 ppm by mass or less based on the coating material composition: CX1X3?CX2R(—CZ1Z2-A0)m??(I) wherein X1 and X3 are each independently F, Cl, H, or CF3; X2 is H, F, an alkyl group, or a fluorine-containing alkyl group; A0 is an anionic group; R is a linking group; Z1 and Z2 are each independently H, F, an alkyl group, or a fluorine-containing alkyl group; and m is an integer of 1 or more.
    Type: Application
    Filed: September 11, 2023
    Publication date: February 1, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Hiromichi MOMOSE, Ozora SHIBATA, Emi YAMAMOTO, Taketo KATO, Yasukazu NAKATANI
  • Publication number: 20240026141
    Abstract: A fluororesin composition, and a molded article obtained from the fluororesin composition. The fluororesin composition containing: a non-melt-flowable fluororesin A having a history of being heated to a melting point thereof or higher; and a non-melt-flowable fluororesin B having no history of being heated to a melting point thereof or higher. The fluororesin composition contains a tetrafluoroethylene unit and a modifying monomer unit based on a modifying monomer copolymerizable with tetrafluoroethylene. Further, the fluororesin composition is a powder for compression molding excluding ram extrusion molding.
    Type: Application
    Filed: September 29, 2023
    Publication date: January 25, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Hirofumi MUKAE, Yosuke KISHIKAWA, Taku YAMANAKA, Taketo KATO, Ryuo ITOH, Hiroki KUBOTA
  • Publication number: 20240026043
    Abstract: A method for producing a fluororesin composition for compression molding excluding ram extrusion molding, the method including: mixing a powder of a fluororesin A1 having a history of being heated to a melting point thereof or higher and an aqueous dispersion containing particles of a fluororesin B1 and having a solid concentration of 50% by mass or lower to provide a mixture; and drying the mixture to provide a fluororesin composition.
    Type: Application
    Filed: September 29, 2023
    Publication date: January 25, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Hirofumi Mukae, Yosuke Kishikawa, Taku Yamanaka, Taketo Kato, Ryuo Itoh, Hiroki Kubota