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. 20, 1982
Filed:
Oct. 15, 1980
Applicant:
Inventors:
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B32B / ; C04B / ;
U.S. Cl.
CPC ...
55523 ; 55DI / ; 60311 ; 210510 ; 428117 ; 106104 ; 501 80 ;
Abstract
The disclosed ceramic honeycomb filter comprises a ceramic honeycomb structural body with a multiplicity of parallel channels extending therethrough, selected channels being sealed at one ends thereof by sealing material while the remainder of the channels being sealed at opposite ends thereof by said sealing material in such a manner that, as dust-containing gas flows therethrough from said one ends to said opposite ends, the gas passes through walls between adjacent channels where the dust particles are collected. Said sealing material is alumina cement containing not more than 27% by weight of calcium oxide (CaO), or a mixture of the alumina cement and aggregates.