Patents by Inventor Mitsuhiro Maehama

Mitsuhiro Maehama 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).

  • Water-resistant surface coating formulations and paper coated therewith
    Patent number: 5587246
    Abstract: The present invention provides a water-resistant surface coating formulation comprising a reaction product obtained by subjecting an acrylamide polymer to a crosslinking reaction with 0.1 to 20 parts by mole, per 100 parts by mole of amido groups in the acrylamide polymer, of a glyoxalmonoureine; a method for improving the water resistance of paper by using the formulation; and coated paper so obtained. As a result of improved water resistance of the coating formulation, this invention makes it possible to conduct coating work stably.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: December 24, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Haruki Tsutsumi, Yoshiaki Ikemoto, Mitsuhiro Maehama, Toshiki Oyanagi, Tsugio Matsubara
  • Water-resistant surface coating formulations and paper coated therewith
    Patent number: 5470918
    Abstract: The present invention provides a water-resistant surface coating formulation comprising a reaction product obtained by subjecting an acrylamide polymer to a crosslinking reaction with 0.1 to 20 parts by mole, per 100 parts by mole of amido groups in the acrylamide polymer, of a glyoxalmonoureine; a method for improving the water resistance of paper by using the formulation; and coated paper so obtained. As a result of improved water resistance of the coating formulation, this invention makes it possible to conduct coating work stably.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: November 28, 1995
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Haruki Tsutumi, Yoshiaki Ikemoto, Mitsuhiro Maehama, Toshiki Oyanagi, Tsugio Matsubara