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:
May. 17, 1983
Filed:
Dec. 09, 1981
Applicant:
Inventors:
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; C02F / ;
U.S. Cl.
CPC ...
210708 ; 210723 ; 210734 ; 210702 ; 210489 ;
Abstract
A filter device suitable for filtering sludges which comprises (A) a tube-like filter as an outer wall consisting of a fabric of polyester or polyamide filament yarn which acts as a support for (B) an inner layer consisting of a non-woven fabric of man-made fibres and a process of dewatering industrial sludge.
Hilscher, Eduard. (1983). Filters (U.S. Patent No. 4383925). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4383925
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile