Patents Assigned to Dr. O.K. Wack Chemie GmbH
  • Method for the liquid cleaning of objects
    Publication number: 20020189644
    Abstract: A method for the liquid cleaning of objects via a cleaning liquid that contains at least two components that under first designated conditions form a mixture and under second designated conditions form a solubility gap, contains the following steps:
    Type: Application
    Filed: December 7, 2001
    Publication date: December 19, 2002
    Applicant: Dr. O.K. Wack Chemie GmbH
    Inventor: Oskar Wack
  • Process for inhibiting corrosion
    Patent number: 5626818
    Abstract: A mixture of propyleneglycolmethylether and propyleneglycolether which is added in a ratio of 60:40 and 90:10 to the last rinsing bath in which metal parts are cleaned, in order to achieve intermediate corrosion resistance.
    Type: Grant
    Filed: June 3, 1996
    Date of Patent: May 6, 1997
    Assignee: Dr. O.K. Wack Chemie GmbH
    Inventors: Oskar K. Wack, Martin Hanek
  • Process for recovering a fluid dissolved in a rinsing bath
    Patent number: 5401414
    Abstract: A process isolates, in a closed circulation, the soluble fluid carried over into a rinsing bath from said rinsing bath and to return the fluid into the upstream bath. To this end, enrichment by separating the soluble fluid from the rinsing bath is provided, the enriched fluid, which has been carried over, is returned into the upstream bath together with solvent, where the solvent is separated out with the use of a membrane.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: March 28, 1995
    Assignee: Dr. O.K. Wack Chemie GmbH
    Inventors: Oskar K. Wack, Martin Hanek