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:
Apr. 28, 1981
Filed:
Feb. 21, 1979
Applicant:
Inventors:
Hans Wilski, Bad Soden am Taunus, DE;
Werner Interthal, Russelsheim, DE;
Gunter Gruber, Frankfurt am Main, DE;
Gerhard Slebos, Hamburg, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F17D / ;
U.S. Cl.
CPC ...
137 13 ; 2523 / ; 2523 / ; 252316 ; 406197 ;
Abstract
The frictional drag of aqueous liquids and suspensions in turbulent or pulsating flow is reduced by adding 1 to 1,000 ppm of a polyacryl amide or partially saponified polyacryl amide obtained in its manufacturing process in the form of an aqueous, dimensionally stable jelly which has retained its solubility in water and is capable of being cut.