Patents by Inventor Friedrich L. Siever

Friedrich L. Siever 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).

  • Process for recovering the overspray of aqueous coating agents during spray application in spray booths
    Patent number: 5569384
    Abstract: A process is described for recovering the overspray of aqueous coating agents during spray application in spray booths in which aqueous circulating liquid is circulated for the purpose of collecting the overspray. The overspray material is continuously or discontinuously extracted from the circulating liquid in an electrocoagulation bath, a higher concentration of overspray being maintained in the electrocoagulation bath than in the circulating liquid of the spray booth as a result of ultrafiltration.
    Type: Grant
    Filed: November 5, 1993
    Date of Patent: October 29, 1996
    Assignee: Herberts GmbH
    Inventors: Dietrich Saatweber, Friedrich L. Siever