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:
Oct. 20, 2026
Filed:
Feb. 06, 2024
Ngk Insulators, Ltd., Nagoya, JP;
Sachiko Masuda, Nagoya, JP;
NGK INSULATORS, LTD., Nagoya-City, JP;
Abstract
A honeycomb filter includes a pillar-shaped honeycomb structure having a porous partition wall and a porous plugging portion, wherein the partition wall is composed of a material containing cordierite as a main component, a porosity of the partition wall is 60 to 70%, a ratio (S2/S1×100%) of the total S2 of an opening area of pores which exist within a unit surface area S1 and which have an equivalent circle diameter exceeding 3 μm with respect to the unit surface area S1 of the partition wall is 58 to 70%, and a ratio (R/D) of an average equivalent circle opening diameter R (μm) of pores which exist at a surface of the partition wall and which have an equivalent circle diameter exceeding 3 μm with respect to an average pore diameter D (μm) of the partition wall measured by a mercury press-in method is 0.3 to 0.8.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile