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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.:

US 9518307 B1

PDFFull Text
Date of Patent:
Dec. 13, 2016

Filed:

May. 21, 2014

Method for the production of a refractory filter

Applicant:

Foseco International Limited, Derbshire, GB;

Inventors:

Friedhelm Demey, Borken-Marbeck, DE;

Renate Jahre, Gladbeck, DE;

Hans Riethmann, Borken, DE;

Mario Arruda, Sao Paulo, BR;

Antonio Cassara, Sao Paulo, BR;

Raphael Neto, Sao Paulo, BR;

Fabio De Oliveira, Sao Paulo, BR;

Sueli Pereira, Sao Paulo, BR;

Kazuhiro Nakano, Toyokawa, JP;

Assignee:

FOSECO INTERNATIONAL LIMITED, Derbyshire, GB;

Attorney:

Nixon & Vanderhye P.C.

Primary Examiner:

Scott Kastler

Int. Cl.
CPC ...
C22B 9/02 (2006.01); B01D 39/20 (2006.01); C04B 35/524 (2006.01); C04B 38/00 (2006.01); C04B 38/06 (2006.01); C04B 35/565 (2006.01); C04B 35/626 (2006.01); C04B 111/00 (2006.01);
U.S. Cl.
CPC ...
C22B 9/023 (2013.01); B01D 39/2093 (2013.01); C04B 35/524 (2013.01); C04B 35/565 (2013.01); C04B 35/6263 (2013.01); C04B 38/0022 (2013.01); C04B 38/0615 (2013.01); B01D 2239/10 (2013.01); C04B 2111/00793 (2013.01); C04B 2235/3217 (2013.01); C04B 2235/3418 (2013.01); C04B 2235/3826 (2013.01);
Abstract

A method for the production of closed edge filters suitable for filtering molten metal and filters made by such a method. The method comprises: providing a reticulated foam substrate having at least one first surface for forming a side face of the filter and two opposed second surfaces for forming the through-flow faces of the filter; applying a liquid comprising an organic coating component to the first surface; solidifying the organic coating component to form a filter precursor having a volatilizable coating on the first surface; impregnating the filter precursor with a slurry comprising particles of a refractory material, a binder and a liquid carrier; and drying and firing the impregnated filter precursor to form the filter having a closed edge.

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Demey, Friedhelm. (2016). Method for the production of a refractory filter (U.S. Patent No. 9518307). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9518307

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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