Patents by Inventor Kevin P. Sroka

Kevin P. Sroka 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).

  • Aluminum lithographic substrate and method of making
    Publication number: 20080003411
    Abstract: Aluminum-containing metal sheets can be electrochemically grained to provide a center line average roughness (Ra) of less than 0.60 ?m and an average maximum pit depth (Rv) of less than 4.5 ?m using a current density of at least 50 A/dm2 and a charge density less than or equal to 850 coulombs/dm2. This improved metal sheet can be used as substrates for imageable elements including lithographic printing plates that exhibit reduced blanket toning.
    Type: Application
    Filed: June 29, 2006
    Publication date: January 3, 2008
    Inventors: Joseph Hunter, Carl G. Hunter, George C. Motoc, Ronald N. Doescher, Kevin P. Sroka, Jen-Chi Huang, Oliver R. Blum