Patents by Inventor Yasser Sheasha

Yasser Sheasha 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).

  • Electrolyte for chromium deposition from Cr(III)-compounds
    Patent number: 11932958
    Abstract: A method for preparing a Cr(III)-plating solution is disclosed. The method comprises or consists of the steps of (a) providing an aged aqueous Cr(III)-solution; (b) adding a polycarbonate or a derivative thereof to the solution of step (a); and (c) adding a borate to the solution of step (b). In addition, a plating solution obtainable by the present method is disclosed, and a plating solution comprising or consisting of Cr(III)-ions, a polycarbonate or a derivative thereof, a borate, water, sulfate, and positive ions selected from the group consisting of hydrogen ions, alkali metal ions and earth alkali metal ions.
    Type: Grant
    Filed: November 2, 2021
    Date of Patent: March 19, 2024
    Assignee: Universitaet Ulm
    Inventors: Yasser Sheasha, Ludwig Kibler, Timo Jacob
  • ELECTROLYTE FOR CHROMIUM DEPOSITION FROM CR(III)-COMPOUNDS
    Publication number: 20220127740
    Abstract: A method for preparing a Cr(III)-plating solution is disclosed. The method comprises or consists of the steps of (a) providing an aged aqueous Cr(III)-solution; (b) adding a polycarbonate or a derivative thereof to the solution of step (a); and (c) adding a borate to the solution of step (b). In addition, a plating solution obtainable by the present method is disclosed, and a plating solution comprising or consisting of Cr(III)-ions, a polycarbonate or a derivative thereof, a borate, water, sulfate, and positive ions selected from the group consisting of hydrogen ions, alkali metal ions and earth alkali metal ions.
    Type: Application
    Filed: November 2, 2021
    Publication date: April 28, 2022
    Inventors: Yasser Sheasha, Ludwig Kibler, Timo Jacob