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. 06, 1979
Filed:
Jul. 07, 1977
Applicant:
Inventors:
Walter Simm, Leverkusen, DE;
Claus Gosling, Leverkusen, DE;
Richard Bonart, Regensburg, DE;
Bela VON Falkai, Gohr, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
428212 ; 55DI / ; 156 624 ; 156 628 ; 264-8 ; 264 10 ; 264 24 ; 264113 ; 264114 ; 264115 ; 264123 ; 427 31 ; 428286 ; 428297 ; 428304 ; 428332 ; 428398 ; 428400 ; 428409 ; 428903 ;
Abstract
In a process for the production of fibre filters, the fibre material is sprayed electrostatically from the liquid state and deposited as a fibre fleece on a conductive support. The starting materials used are solutions of high polymers in readily volatile solvents. The filters obtained have substantially improved properties.