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:
Feb. 22, 2011
Filed:
Dec. 22, 2005
Shunji Okazaki, Yukuhashi, JP;
Yasuhiko Otsubo, Kitakyushu, JP;
Shinya Tokumaru, Kanda-machi, JP;
Hirohisa Suwabe, Minamikawachi-machi, JP;
Toshitaka Ishizawa, Moka, JP;
Shunji Okazaki, Yukuhashi, JP;
Yasuhiko Otsubo, Kitakyushu, JP;
Shinya Tokumaru, Kanda-machi, JP;
Hirohisa Suwabe, Minamikawachi-machi, JP;
Toshitaka Ishizawa, Moka, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A method for producing a honeycomb filter from a honeycomb structure having large numbers of flow paths partitioned by cell walls, comprising inserting a tubular member into each of the flow paths, and injecting a plugging material into each of the flow paths from the tubular member to form a plug in each of the flow paths at a position separate from the end surface of the honeycomb structure, the tubular member having an outer diameter that is 40-90% of the opening size of the flow path, the plugging material comprising at least a ceramic material having a maximum particle size that is 85% or less of the inner diameter of the tubular member, and an average particle size of 1 μm or more.