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. 02, 1997
Filed:
Jul. 31, 1995
Applicant:
Inventors:
Hartwig Basse, Nordenham, DE;
Hans-Dieter Kruse, Stadland, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
428 341 ; 428 357 ; 261 94 ; 261D / ;
Abstract
Packing material for biological waste water treatment, and process for the production of such packing material. Packing material made of tube-shaped base members with net structured outer surface are provided with at least one water-impermeable surface-increasing element arranged on the outer surface of each base member and directly connected thereto, for increasing the specific growing surface for biofilm.