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US 4,363,644 AGranted
Filter for purifying exhaust gas
AssigneeNippon Soken, Inc.
InventorsSusumu Sato, Yukihisa Takeuchi, Masahiro Tomita
Life of this patent
Estimating the term…
Abstract
A filter for purifying exhaust gas of an automobile or the like comprises a rigid ceramic supporting member provided with at least one flow passage and porous ceramic filtering material which is charged within the passage and sintered to the walls so as to be integrally connected to the supporting member. This filter shows excellent exhaust gas purifying efficiency as well as high mechanical strength.
Claims6
A filter for purifying exhaust gas of an internal combustion engine comprising:
- a rigid ceramic supporting member comprising at least one passage therethrough for flow of exhaust gas therethrough;
- and
- porous ceramic filtering material filling said at least one passage and sintered to the walls thereof.
Dependencies are inferred from the claim text.