Patents by Inventor Voitech Plzak

Voitech Plzak 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: 4597841
    Abstract: A process of recovering lead from old lead accumulator scrap comprises the mechanical comminution of the old lead accumulators, the collection of old acid, the sifting of the broken plastic from the mixture of lead and lead compounds, the initial separating off of larger metallic parts, the application of the mixture of lead and lead compounds as a porous layer to a cathode plate and the arrangement thereof with the cathode plate in dilute sulphuric acid as an electrolyte opposite to an anode plate at a small spacing, and the reduction of the lead compounds to lead by the flow of current from the cathode plate to the anode plate. The electrolysis is first carried out at a higher sulphuric acid concentration and then at a lower sulphuric acid concentration.
    Type: Grant
    Filed: January 23, 1985
    Date of Patent: July 1, 1986
    Assignee: Hagen Batterie AG
    Inventors: Rainer Kiessling, Voitech Plzak, H. Wendt