The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 1992
Filed:
Apr. 12, 1991
Rudiger K Hellstern, Stuttgart, DE;
Peter M Hosel, Pforzheim, DE;
Arwed Eberle, Reutlingen, DE;
Ulrich Lachenmayer, Uhingen, DE;
Herbert Kohler, Kornwestheim, DE;
Durr GmbH, Stuttgart, DE;
Abstract
Method for cleaning objects with the aid of an aqueous cleaning fluid containing a washing agent, in which the objects are rinsed with an aqueous rinsing fluid after treatment with the cleaning fluid and wherein, to avoid any components having a low boiling point being returned to the cleaning and rinsing fluid as well as to avoid any loss in washing agents, the cleaning fluid is first subjected to membrane filtration, the permeate hereby recovered and containing washing agents is distilled, the concentrate resulting therefrom and containing washing agents is added to the cleaning fluid used in the cleaning process and the distillate is supplied to the rinsing process.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile