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:
Jul. 05, 1994
Filed:
Aug. 20, 1992
Applicant:
Inventors:
Brigitte Wegner, Speyer, DE;
Knut Oppenlaender, Ludwigshafen, DE;
Rudolf Schuhmacher, Boehl-Iggelheim, DE;
Andreas Hohmann, Ludwigshafen, DE;
Gabriele Dralle-Vos, Ludwigshafen, DE;
Assignee:
Basf Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; D21H / ;
U.S. Cl.
CPC ...
252321 ; 162179 ; 252358 ;
Abstract
Antifoams for the paper industry are based on oil-in-water emulsions in which the oil phase accounts for from 5 to 50% by weight of the emulsion and contains