Patents by Inventor Shigenobu Otsubo

Shigenobu Otsubo 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).

  • Aqueous dispersion composition process for preparing the same, rust preventive, rust prevention method, and rust-proofed metallic products
    Patent number: 6458897
    Abstract: An aqueous dispersion composition which comprises an ionomer resin (A) neutralized with a divalent metal, and water, sufficiently answers high level of requirement performances in various uses, and in particular, is particularly suitable as a heat sealing agent for aluminum foil, film, paper or the like, a metal coating agent, a modifier for various emulsions, a paint, an adhesive, a rust-preventive treating agent, and the like; a method which can produce the aqueous dispersion composition in high yield; a rust-preventive treating agent for a metal surface, which contains the aqueous dispersion composition, has excellent corrosion resistance, and can form a rust-preventive layer showing excellent coating adhesion to a over coat paint; a rust-preventive treatment method using the rust-preventive treating agent; and a rust-preventive treated metal product.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: October 1, 2002
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Suguru Tokita, Shigenobu Otsubo, Yoshiyuki Harada, Makoto Nakazawa