Patents by Inventor Mehrzad DELFAN-AZARI

Mehrzad DELFAN-AZARI 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 of removing a ceramic coating from a ceramic coated metallic article
    Patent number: 11926905
    Abstract: A method of removing a ceramic coating from a ceramic coated metallic article without damaging the metallic bond coating, the metallic article having a first and second portions, each of the portions comprising a metallic bond coating and a ceramic coating on the metallic bond coating, the ceramic coating on the second portion being less porous than the ceramic coating on the first portion. The method comprises the steps of a) immersing the ceramic coated metallic article in a caustic solution; b) maintaining the ceramic coated metallic article in the caustic solution at atmospheric pressure for a predetermined time period and at a predetermined temperature; c) removing the ceramic coated metallic article from the caustic solution; d) rinsing the ceramic coated metallic article in water at ambient temperature; e) water jet blasting the first portion of the metallic article to remove the ceramic coating; and f) water jet blasting the second portion of the metallic article to remove the ceramic coating.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: March 12, 2024
    Inventor: Mehrzad Delfan-Azari
  • Method of Removing a Ceramic Coating from a Ceramic Coated Metallic Article
    Publication number: 20200291532
    Abstract: A method of removing a ceramic coating from a ceramic coated metallic article without damaging the metallic bond coating, the metallic article having a first and second portions, each of the portions comprising a metallic bond coating and a ceramic coating on the metallic bond coating, the ceramic coating on the second portion being less porous than the ceramic coating on the first portion. The method comprises the steps of a) immersing the ceramic coated metallic article in a caustic solution; b) maintaining the ceramic coated metallic article in the caustic solution at atmospheric pressure for a predetermined time period and at a predetermined temperature; c) removing the ceramic coated metallic article from the caustic solution; d) rinsing the ceramic coated metallic article in water at ambient temperature; e) water jet blasting the first portion of the metallic article to remove the ceramic coating; and f) water jet blasting the second portion of the metallic article to remove the ceramic coating.
    Type: Application
    Filed: February 27, 2020
    Publication date: September 17, 2020
    Applicant: ROLLS-ROYCE plc
    Inventor: Mehrzad DELFAN-AZARI