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:
Mar. 16, 2021
Filed:
Mar. 07, 2016
Denso Corporation, Kariya, JP;
Mikio Ishihara, Kariya, JP;
Syusaku Yamamura, Kariya, JP;
Akira Miyashita, Kariya, JP;
Hironori Niwa, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
An exhaust gas purification filter has a honeycomb structure body and upstream side plug members. Cell holes are composed of inlet cell holes and outlet cell holes. In a central area and an outer peripheral area, a gas flow channel cross sectional area Scof the outlet cell holes is larger than a gas flow channel cross sectional area Soof the inlet cell holes, where Sc<So. A first ratio Rc is smaller than a second ratio Ro. The first ratio Rc is a ratio of Scand Sc. The second ratio Ro is a ratio of Soto So. In a first direction X and a second direction Y, the inlet cell holes and the outlet cell holes are alternately arranged, and the cell walls in the central area are larger in thickness than the cell walls in the outer peripheral area.