Patents by Inventor Yushi Ishibashi

Yushi Ishibashi 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).

  • Method for bonding steel plates and composition for use therein
    Patent number: 4169006
    Abstract: A method for bonding steel plates with a polyamide adhesive, comprising applying a composition comprising (1) a polyester resin comprising the reaction product of (a) a polycarboxylic acid component comprising at least one of a polycarboxylic acid, an anhydride thereof, an ester thereof or a mixture thereof with (b) a polyhydric alcohol component comprising at least one polyhydric alcohol or a mixture thereof, with at least some of one of the polycarboxylic acid component and the polyhydric alcohol component being trivalent or higher, and (2) a bisphenol A-type epoxy resin, on a steel plate; baking the coating by heating; juxtaposing the coated steel plates to be bonded with a polyamide adhesive therebetween; and bonding the steel plates with the polyamide adhesive, a primer composition for use therein and a polyester resin for use in the primer composition.
    Type: Grant
    Filed: June 22, 1977
    Date of Patent: September 25, 1979
    Assignee: Toagosei Chemical Industry Co., Ltd.
    Inventors: Takashi Matsubara, Yoshiaki Fujimoto, Yushi Ishibashi