Patents by Inventor Masamitsu Hasegawa

Masamitsu Hasegawa 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).

  • Patent number: 5364626
    Abstract: A repelling material for animals retaining a great amount of a repellent and also having an excellent sustained release property can be obtained by adsorbing the repellent and at least one substance of phthalic acid esters, citric acid esters and glycols.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: November 15, 1994
    Assignee: Osaka Gas Company Ltd.
    Inventors: Masamitsu Hasegawa, Yasuhisa Kuroda
  • Patent number: 5022947
    Abstract: The invention provides a means to prepare a highly water-resistant printed material by the ink-jet printing method despite the water-solubility of the dye in the aqueous ink used in the ink-jet printing method. The inventive method comprises: overcoating the surface of the sheet material, which has a water-absorptive surface layer with receptivity of the aqueous ink and printed by the ink-jet printing method, with a curable polyisocyanate compound and bringing the overcoating layer under a condition capable of curing the polyisocyanate compound.
    Type: Grant
    Filed: June 5, 1990
    Date of Patent: June 11, 1991
    Assignee: Shin-Etsu Polymer Co., Ltd.
    Inventors: Masamitsu Hasegawa, Satoshi Tamura, Isao Sugiyama, Takashi Wakashima
  • Patent number: 4966804
    Abstract: The invention provides a means to prepare a highly water-resistant printed material by the ink-jet printing method despite the water-solubility of the dye in the aqueous ink used in the ink-jet printing method. The inventive method comprises: overcoating the surface of the sheet material, which has a water-absorptive surface layer with receptivity of the aqueous ink and printed by the ink-jet printing method, with a curable polyisocyanate compound and bringing the overcoating layer under a condition capable of curing the polyisocyanate compound.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: October 30, 1990
    Assignee: Shin-Etsu Polymer Co., Ltd.
    Inventors: Masamitsu Hasegawa, Satoshi Tamura, Isao Sugiyama, Takashi Wakashima
  • Patent number: 4877678
    Abstract: The printing sheet of the invention comprises a base sheet and two successive coating layers provided thereon, of which the first coating layer, which serves as a water-absorbing layer, is formed of a dispersion of a powdery highly water-absorptive resin, e.g., poly(sodium acrylate), in a polymeric vehicle and the second coating layer, which serves as a water absorption-controlling layer, is formed of a dispersion of an inorganic powder such as silica in a polymeric vehicle. By virtue of the adequately controlled velocity and capacity of water absorption, the printing sheet can give a very satisfactory printed matter in respect of the color density and sharpness of the printed patterns when it is used in printing on an ink-jet printer by using an aqueous ink.
    Type: Grant
    Filed: May 25, 1988
    Date of Patent: October 31, 1989
    Assignee: Shin-Etsu Polymer Co., Ltd.
    Inventors: Masamitsu Hasegawa, Satoshi Tamura, Takashi Wakashima, Isao Sugiyama