Patents by Inventor Takafumi Kawasaki

Takafumi Kawasaki 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: 20240228753
    Abstract: A thermoplastic resin composition may include a cellulose ester, a polyester, and a plasticizer. The plasticizer may have a number average molecular weight of 1000 or less. An amount of the polyester may be 120 parts by weight or less per 100 parts by weight of the cellulose ester. An amount of the plasticizer may be less than 100 parts by weight per 100 parts by weight of the cellulose ester.
    Type: Application
    Filed: March 12, 2021
    Publication date: July 11, 2024
    Applicant: Daicel Corporation
    Inventors: Masaaki KUSUMOTO, Hiroki TANIGUCHI, Takafumi KAWASAKI, Akihiro HIGUCHI
  • Patent number: 11981796
    Abstract: A cellulose acetate resin composition may include a cellulose acetate (A) having a total degree of acetyl substitution of 2.60 or less; a filler (B); and a plasticizer (C). The filler (B) may be selected from the group consisting of (b1) a predetermined inorganic compound, (b2) a predetermined metal salt, (b3) cellulose or hemicellulose, and (b4) wood flour. The plasticizer (C) may be selected from (c1) a glycerin ester-based plasticizer, (c2) an ether-based plasticizer, and (c3) a glycol ester-based plasticizer. A content of the component (A) may be from 4.5 to 90 mass %. A total content of the component (B) may be from 5 to 50 mass %. A total content of the component (C) may be from 5 to 35 mass %.
    Type: Grant
    Filed: November 1, 2022
    Date of Patent: May 14, 2024
    Assignee: DAICEL CORPORATION
    Inventors: Masaaki Kusumoto, Takafumi Kawasaki, Akihiro Higuchi
  • Publication number: 20230192993
    Abstract: The cellulose acetate resin composition may include: a cellulose acetate having a total degree of acetyl substitution of 1.9 or greater and 2.6 or less; and a plasticizer. The cellulose acetate may have a number average molecular weight of 45000 or greater and a weight average molecular weight of 70000 or greater. The plasticizer may be selected from (1) an ether-based plasticizer in which at least one terminal hydroxyl group of a polyalkylene glycol is etherified, and (2) an ester-based plasticizer in which at least one terminal hydroxyl group of a polyalkylene glycol is esterified. The polyalkylene glycol in the ether-based plasticizer (1) and the ester-based plasticizer (2) may have a degree of polymerization of 3 or greater and less than 10. The plasticizer may not include an aromatic ring in the terminal group.
    Type: Application
    Filed: February 7, 2023
    Publication date: June 22, 2023
    Applicant: Daicel Corporation
    Inventors: Masaaki KUSUMOTO, Takafumi KAWASAKI, Akihiro HIGUCHI
  • Patent number: 11648189
    Abstract: An object is to provide a foamable aerosol composition that can be continuously ejected from the container to form dense and uniform foam, and that the formed foam has certain elasticity as well as can be easily spread on an object, and the foamable aerosol composition comprises a stock solution including cellulose nanofibers and a propellant is provided.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: May 16, 2023
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Takafumi Kawasaki, Takeshi Nakatani, Noriko Motoyama
  • Publication number: 20230055648
    Abstract: A cellulose acetate resin composition may include a cellulose acetate (A) having a total degree of acetyl substitution of 2.60 or less; a filler (B); and a plasticizer (C). The filler (B) may be selected from the group consisting of (b1) a predetermined inorganic compound, (b2) a predetermined metal salt, (b3) cellulose or hemicellulose, and (b4) wood flour. The plasticizer (C) may he selected from (c1) a glycerin ester-based plasticizer, (c2) an ether-based plasticizer, and (c3) a glycol ester-based plasticizer. A content of the component (A) may he from 4.5 to 90 mass %. A total content of the component (B) may be from 5 to 50 mass %. A total content of the component (C) may be from 5 to 35 mass %.
    Type: Application
    Filed: November 1, 2022
    Publication date: February 23, 2023
    Applicant: Daicel Corporation
    Inventors: Masaaki KUSUMOTO, Takafumi KAWASAKI, Akihiro HIGUCHI
  • Publication number: 20190338084
    Abstract: The present invention aims to provide a method for producing a masterbatch with improved rubber physical properties such as tensile strength at break, rigidity, and fuel economy at high productivity by enhancing the amount of fillers incorporated into rubber and the dispersibility of fillers in rubber, as well as related products. The present invention relates to a method for producing a masterbatch, including: step (1) of mixing a rubber latex having a zeta potential of ?100 to ?20 mV with a filler dispersion having a zeta potential of ?120 to ?10 mV to prepare a latex compound; step (2) of adjusting the zeta potential of the latex compound obtained in step (1) to ?30 to 0 mV; and step (3) of solidifying the coagulum obtained in step (2) with an organic solvent.
    Type: Application
    Filed: January 19, 2018
    Publication date: November 7, 2019
    Applicants: SUMITOMO RUBBER INDUSTRIES, LTD., NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Sumiko MIYAZAKI, Takafumi KAWASAKI, Kotaro ITO, Yusuke YASUKAWA
  • Patent number: 10428188
    Abstract: The present invention provides, inter alia, a method for producing a masterbatch in which the dispersibility of microfibrillated plant fibers is further increased to obtain excellent processability and improved rubber properties such as fuel economy, tensile strength, and elongation at break. The present invention relates to a method for producing a masterbatch, the method including step (I) of mixing a rubber latex with microfibrillated plant fibers oxidized with an N-oxyl compound to obtain a mixture, and coagulating the mixture by adjusting its pH to 2 to 6.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: October 1, 2019
    Assignees: SUMITOMO RUBBER INDUSTRIES, LTD., NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Sumiko Miyazaki, Takahiro Mabuchi, Takafumi Kawasaki, Takeshi Nakayama, Takeshi Fujii
  • Publication number: 20190224083
    Abstract: An object is to provide a foamable aerosol composition that can be continuously ejected from the container to form dense and uniform foam, and that the formed foam has certain elasticity as well as can be easily spread on an object, and the foamable aerosol composition comprises a stock solution including cellulose nanofibers and a propellant is provided.
    Type: Application
    Filed: June 15, 2017
    Publication date: July 25, 2019
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Takafumi KAWASAKI, Takeshi NAKATANI, Noriko MOTOYAMA
  • Publication number: 20190116858
    Abstract: An object of the present invention is to provide an food additive capable of improving quality and physical properties such as water retention, shape retention, and dispersion stability at the time of adding to foods such as processed foods and scarcely impairing characteristics such as original texture and flavor of food, and also to provide foods comprising the food additive. That is, the present invention provides a food additive comprising an anion-modified cellulose nanofibers and food including the food additive.
    Type: Application
    Filed: May 15, 2017
    Publication date: April 25, 2019
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Takafumi KAWASAKI, Takeshi NAKATANI, Shinji SATO, Koji KIMURA, Takeshi FUJII, Fumiko IWAHORI
  • Publication number: 20190119473
    Abstract: The present invention aims to provide a rubber composition which has further enhanced dispersion of microfibrillated cellulose in rubber to provide excellent processability and further to provide excellent rigidity, tensile properties, and fuel economy while maintaining a good balance between them. The present invention also aims to provide a pneumatic tire formed from the rubber composition with high productivity which provides excellent handling stability, durability, and rolling resistance properties while maintaining a good balance between them. The rubber composition of the present invention contains: a rubber component; a chemically modified microfibrillated cellulose; and a filler, the chemically modified microfibrillated cellulose having a structure in which the hydroxyl hydrogen atoms of microfibrillated cellulose are partly substituted with a cationic group of a cationic group-containing compound.
    Type: Application
    Filed: March 15, 2017
    Publication date: April 25, 2019
    Applicants: Sumitomo Rubber Industries, Ltd., Nippon Paper Industries Co., Ltd.
    Inventors: Sumiko MIYAZAKI, Kenya WATANABE, Takafumi KAWASAKI, Kotaro ITO
  • Publication number: 20180016402
    Abstract: The present invention provides, inter alia, a method for producing a masterbatch in which the dispersibility of microfibrillated plant fibers is further increased to obtain excellent processability and improved rubber properties such as fuel economy, tensile strength, and elongation at break. The present invention relates to a method for producing a masterbatch, the method including step (I) of mixing a rubber latex with microfibrillated plant fibers oxidized with an N-oxyl compound to obtain a mixture, and coagulating the mixture by adjusting its pH to 2 to 6.
    Type: Application
    Filed: February 9, 2016
    Publication date: January 18, 2018
    Applicants: SUMITOMO RUBBER INDUSTRIES, LTD., NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Sumiko MIYAZAKI, Takahiro MABUCHI, Takafumi KAWASAKI, Takeshi NAKAYAMA, Takeshi FUJII
  • Publication number: 20130317879
    Abstract: There is provided a system which analyzes data representative of operation situation of a work system and finds tacit problem hidden in work performed at the a field by a system user. Particularly, the system is to support to find the problem even if the user is not a specialist such as ethnographer. The system includes event examples in which the problems in the work at the field found from user analysis such as observation or interview are classified and expressed as events in operation data when a computer is utilized, analysis menu, analysis function and visualization unit for finding the events.
    Type: Application
    Filed: February 28, 2013
    Publication date: November 28, 2013
    Applicant: HITACHI, LTD.
    Inventors: Hiromi UKAI, Ryota MIBE, Hirofumi DANNO, Hideaki ITO, Takafumi KAWASAKI, Shigetoshi HAYASHI, Hirofumi SHINKE, Chiaki HIRAI
  • Publication number: 20130050854
    Abstract: Disclosed herein is a lens barrel, including: plural barrel cases having holding frame portions holding optical members, respectively, and coupled to one another in a predetermined direction; and plural abutment portions made to abut against one another in a state in which the plural barrel cases are coupled to the holding frame portions, respectively, wherein the abutment portion of at least one of the plural barrel cases coupled to one another is formed in a shape protruding to the abutment portion side of the other of the plural barrel cases coupled to one another.
    Type: Application
    Filed: August 23, 2012
    Publication date: February 28, 2013
    Applicant: Sony Corporation
    Inventors: RYUHEI AZUMA, YOSHINORI MUTO, TAKUYA TSUTSUMI, TAKAFUMI KAWASAKI, FUMIYOSHI ITOU, HAJIME NAKAMURA, DAISUKE KURODA, KENJI ISHIDA
  • Patent number: 8256407
    Abstract: To provide a multi-wire saw that, at the start of cutting of an ingot, prevents a wire from being displaced in grooves of guide rollers due to the wire being lifted. A wire is wound around a plurality of wire guide rollers to be positioned in a feeding direction of an ingot, and in this state, a wire-lifting restraining member that is a body of rotation and restrains the wire from being lifted by being brought into contact with the wire is disposed near the wire guide rollers.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: September 4, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takafumi Kawasaki, Seiichi Mimura, Hirokazu Nishida
  • Patent number: 8098365
    Abstract: An illumination optical system which illuminates a plane to be illuminated using light from a light source, includes a first integrator and a second integrator disposed in order from the light source, a diaphragm having an aperture of constant area and disposed between the first integrator and the second integrator and close to the first integrator and an irradiation range adjustment unit configured to adjust an irradiation range of the light from the light source on a plane where the diaphragm is disposed, the irradiation range includes the aperture.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: January 17, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takafumi Kawasaki
  • Patent number: 8075647
    Abstract: The invention is a slurry for slicing a silicon ingot, containing a basic material, such as an alkali metal hydroxide, abrasive powder and water, in which the slurry contains the basic material in an amount of from 2 to 6% by mass and glycerin in an amount of from 25 to 55% by mass, based on a total mass of components of the slurry excluding the abrasive powder.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: December 13, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takafumi Kawasaki, Seiichi Mimura, Hirokazu Nishida, Yasuhiro Yoshida
  • Publication number: 20100163009
    Abstract: To provide a multi-wire saw that, at the start of cutting of an ingot, prevents a wire from being displaced in grooves of guide rollers due to the wire being lifted. A wire is wound around a plurality of wire guide rollers to be positioned in a feeding direction of an ingot, and in this state, a wire-lifting restraining member that is a body of rotation and restrains the wire from being lifted by being brought into contact with the wire is disposed near the wire guide rollers.
    Type: Application
    Filed: June 27, 2007
    Publication date: July 1, 2010
    Inventors: Takafumi Kawasaki, Seiichi Mimura, Hirokazu Nishida
  • Publication number: 20100037880
    Abstract: The invention is a slurry for slicing a silicon ingot, containing a basic material, such as an alkali metal hydroxide, abrasive powder and water, in which the slurry contains the basic material in an amount of from 2 to 6% by mass and glycerin in an amount of from 25 to 55% by mass, based on a total mass of components of the slurry excluding the abrasive powder.
    Type: Application
    Filed: October 10, 2006
    Publication date: February 18, 2010
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takafumi Kawasaki, Seiichi Mimura, Hirokazu Nishida, Yasuhiro Yoshida
  • Patent number: 7591712
    Abstract: A method of producing silicon blocks by cutting a silicon ingot is provided. The method uses a silicon ingot cutting slurry containing abrasive grains and an alkaline substance so as to provide the silicon blocks that can be produced into silicon wafers each having a thin thickness with reduced substrate damage at the time of producing a solar battery. The alkaline substance has a content mass that is at least 3.5% with respect to the mass of the entire liquid components of said slurry, and the slurry contains an organic amine having a mass ratio of 0.5 to 5.0 with respect to water in the liquid components of the slurry. The slurry is used at a pH of 12 or more and at a temperature of from 65 to 95 degrees C.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: September 22, 2009
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroaki Morikawa, Shoichi Karakida, Takafumi Kawasaki
  • Patent number: 7433506
    Abstract: A display method for a magnetic field measuring apparatus which includes detecting a magnetic field generated from a biotest sample by a plurality of magnetic sensors and displaying measurement data obtained on the basis of the detected magnetic field in any display mode, which further comprises displaying an operating information display screen, the operating information display screen having a processing function display section selecting an operation menu including a biotest sample list, data measurement or data analysis; a biotest information display section; and a data display area.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: October 7, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Kazuhisa Machida, Takafumi Kawasaki, Hiroyuki Suzuki, Keiji Tsukada