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:
Mar. 09, 2021
Filed:
Jan. 30, 2019
Performance Polyamides Sas, Paris, FR;
Gala Industries, Inc., Eagle Rock, VA (US);
Jean-Francois Estur, Saint-Genis Laval, FR;
Eric Roche, Luzinay, FR;
Michael Eloo, Xanten, DE;
Berthold Druschel, Rees, DE;
Performance Polyamides S.A.S., Paris, FR;
Gala Industries. Inc., Eagle Rock, VA (US);
Abstract
Certain polyamide beads or granules are useful as a sustaining material for underground natural or artificial cracks of the earth's crust essentially employed for the extraction of hydrocarbons such as crude oil or natural gas; such polyamide beads have a spherical or ellipsoidal shape and have a surface free of concave portions, advantageously having a uniform shape, and having a mean diameter lower than or equal to 1.7 mm and a porosity lower than 0.1 ml/g, and are produced using a particular cutting device/extruder.