Patents by Inventor Kazufumi Hamada

Kazufumi Hamada 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).

  • Primer for cyanoacrylate adhesive
    Publication number: 20080257492
    Abstract: Some of ?-cyanoacrylate adhesive does not achieve practical bond (adhesion) strength and any objective materials do not have adhesion with the same. The inventor provides a primer which is not harmful against human body and shows when applied sufficient adhesion strength even on those materials hard to have adhesion. A primer for cyanoacrylate adhesive characterized by comprising as an effective content amphoteric compounds containing in molecules the following substances a and b: a: carboxyl group or sulfonic acid group, and b: amines.
    Type: Application
    Filed: November 8, 2007
    Publication date: October 23, 2008
    Applicant: Alteco Inc.
    Inventors: Keizo Chikatsune, Kazufumi Hamada, Kazuo Kohara
  • Primer for cyanoacrylate adhesive
    Publication number: 20060278337
    Abstract: Some of ?-cyanoacrylate adhesive does not achieve practical bond (adhesion) strength and any objective materils do not have adhesion with the same. The inventor provides a primer which is not harmful against human body and shows when applied sufficient adhesion strength even on those materials hard to have adhesion. A primer for cyanoacrylate adhesive characterized by comprising as an effective content amphoteric compounds containing in molecules the following substances a and b: a: carboxyl group or sulfonic acid group, and b: amines.
    Type: Application
    Filed: June 9, 2005
    Publication date: December 14, 2006
    Applicant: ALTECO INC.
    Inventors: Keizo Chikatsune, Kazufumi Hamada, Kazuo Kohara