Patents by Inventor Cahit Eylem

Cahit Eylem 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).

  • Conversion coatings prepared or treated with calcium hydroxide solutions
    Patent number: 6395106
    Abstract: A conversion coating process that forms a stable and corrosion-resistant oxide layer on metal or metal oxide substrates or layers. Particularly, the conversion coating process involves contacting the metal or metal oxide substrate or layer with the aqueous calcium hydroxide solutions in order to convert the surface of the substrate to a stable metal oxide layer or coating. According to the present invention, the calcium hydroxide solution is prepared by removing carbon dioxide from water or an aqueous solution before introducing the calcium hydroxide. In this manner, formation of calcium carbonate particles is avoided and the porosity of the conversion coating produced by the calcium hydroxide solution is reduced to below about 1%.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: May 28, 2002
    Assignee: Lynntech, Inc.
    Inventors: Zoran Minevski, Eric Clarke, Jason Maxey, Carl Nelson, Cahit Eylem