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:
Jul. 05, 1994
Filed:
Dec. 16, 1992
Thomas L Stillwagon, Long Beach, CA (US);
Douglas J Twait, Bellflower, CA (US);
AlliedSignal Inc., Morris Township, Morris County, NJ (US);
Abstract
A ceramic filter is prepared by mixing together a ceramic powder, a pore forming agent, and any sintering aids required in the sintering of the ceramic powder, forming a tape from the mixture, and molding filter plates from the tape. Two types of annular disk filter plates are formed. A first plate type has an opening on the external annular surface, and a second plate type has an opening on the internal annular surface. The two types of filter plates are stacked in an alternating fashion, and end pieces are added to form a filter assembly. The assembly is sintered to form a filter. The pore forming agent is preferably polystyrene microspheres that are decomposed during the sintering process, leaving porosity that effectively captures particulate impurities when a fluid is passed through the filter in service.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile