Patents by Inventor Takao Sezaki

Takao Sezaki 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).

  • Filled paper and method of manufacturing the same
    Patent number: 8414739
    Abstract: There is provided a filled paper containing a coated filler obtained by coating a filler with a acrylamide copolymer (composite PAM) comprising (A) an anionic polysaccharide and (B) a cationic and/or an amphoteric acrylamide copolymer. The composite PAM is obtained, for example, by mixing the component (A) and the component (B). Since the filler is treated with a combination of the components (A) and (B) different from each other in charge properties and structure, suitable coagulation effect can be attained and the coated filler has excellent affinity for pulp slurry. Therefore, even in the case of a highly filled paper, a large paper strengthening effect can be attained by using a small amount of the chemical agent.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: April 9, 2013
    Assignees: Harima Chemicals, Inc., Nippon Paper Industries Co., Ltd.
    Inventors: Yoshiharu Kimura, Takao Sezaki, Yuko Iijima, Koji Kutsuwa
  • PAPER CONTAINING PREGGREGATED FILLER AND PROCESS FOR PRODUCING THE SAME
    Publication number: 20090162642
    Abstract: Provide a paper offering good paper strength properties in terms of strength and stiffness, high smoothness and excellent printing quality by adjusting the ash content in paper to a range of 3 to 40 percent by solid weight and allowing the paper to contain a pre-coagulated filler having an average particle size of 10 to 80 ?m as measured by the laser diffraction method, wherein such filler is obtained by processing a filler using a composite acrylamide copolymer comprising (A) an anionic polysaccharide and (B) a cationic and/or amphoteric acrylamide copolymer.
    Type: Application
    Filed: January 26, 2007
    Publication date: June 25, 2009
    Inventors: Katsumasa Ono, Koji Kutsuwa, Tomohiro Yokohara, Fuminari Nonomura, Masayuki Watanabe, Hiroshi Koyamoto, Akinobu Chatani, Yoshiharu Kimura, Takao Sezaki
  • Filled Paper and Method of Manufacturing the Same
    Publication number: 20090020250
    Abstract: There is provided a filled paper containing a coated filler obtained by coating a filler with a acrylamide copolymer (composite PAM) comprising (A) an anionic polysaccharide and (B) a cationic and/or an amphoteric acrylamide copolymer. The composite PAM is obtained, for example, by mixing the component (A) and the component (B). Since the filler is treated with a combination of the components (A) and (B) different from each other in charge properties and structure, suitable coagulation effect can be attained and the coated filler has excellent affinity for pulp slurry. Therefore, even in the case of a highly filled paper, a large paper strengthening effect can be attained by using a small amount of the chemical agent.
    Type: Application
    Filed: March 16, 2006
    Publication date: January 22, 2009
    Inventors: Yoshiharu Kimura, Takao Sezaki, Yuko Iijima, Koji Kutsuwa