Patents by Inventor William H. Safranek

William H. Safranek 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).

  • Patent number: 4053370
    Abstract: A metal surface such as an endless strip of stainless steel is masked with a plating resist, leaving exposed areas to form a desired circuit pattern. The circuit pattern comprising a high density major layer and a roughened surface layer is formed by copper electroplating on the masked metal surface as same is made cathodic in a copper sulfate bath and successively held opposite to first and second insoluble anodes therein. In order to realize a high copper deposition rate, the electrolyte is caused to flow turbulently at an elevated temperature through the spacings between the metal surface and the first and second anodes. The completed circuit pattern has its roughened surface layer bonded to an adhesive-coated strip of insulating base and is separated from the metal surface. If desired, an adhesive-coated strip of overlay may then be bonded to the circuit pattern on the insulating base strip. The complete process can be automated.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: October 11, 1977
    Assignee: Koito Manufacturing Company Limited
    Inventors: Keizo Yamashita, Tatsuo Wada, Yukio Okamura, William H. Safranek
  • Patent number: 3979858
    Abstract: A process for barrel finishing, vibratory finishing, deburring or polishing the surface of a metal workpiece such as a zinc die casting is described. The article to be finished is subjected to agitation in a rotating barrel or a vibratory machine containing abrasive media and an aqueous accelerator solution of a lower aliphatic acid having at least two and not more than six carbon atoms. The accelerator solution may also contain sodium bisulfate. In the process, the accelerator solution is added to or flushed through the finishing apparatus.
    Type: Grant
    Filed: July 24, 1975
    Date of Patent: September 14, 1976
    Assignee: International Lead Zinc Research Organization, Inc.
    Inventors: Donald E. Semones, William H. Safranek