Patents by Inventor Jushiro Eguchi

Jushiro Eguchi 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).

  • Polyimide precursor solution, coating film obtained therefrom, and process for producing polyimide coating film
    Patent number: 6133407
    Abstract: A polyimide precursor solution having a high concentration yet low viscosity, a polyimide coating film having satisfactory physical properties which is prepared from the polyimide precursor solution, and a process for producing a polyimide coating film using the polyimide precursor solution. The polyimide precursor solution has dissolved therein a specific salt of a diamine and a tetracarboxylic acid and/or a dicarboxylic acid-dialkyl ester in a high concentration, the diamine and the tetracarboxylic acid and/or the dicarboxylic acid-dialkyl ester being capable of forming a polyimide. Also disclosed is a polyimide coating film obtained by heating the solution to cause imidization and a process for producing the polyimide coating film.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: October 17, 2000
    Assignee: Unitka Ltd.
    Inventors: Hisayasu Kaneshiro, Jushiro Eguchi, Yoshiaki Echigo, Takahiro Ono