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. 22, 2003
Filed:
Jan. 26, 2001
Applicant:
Inventors:
Tuyoshi Nishijima, Hiroshima-ken, JP;
Osamu Takayama, Hiroshima-ken, JP;
Assignee:
Mazda Motor Corporation, Hiroshima-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 2/734 ; C07C 2/718 ; B01J 2/100 ; C01B 3/336 ; B01D 5/304 ;
U.S. Cl.
CPC ...
C07C 2/734 ; C07C 2/718 ; B01J 2/100 ; C01B 3/336 ; B01D 5/304 ;
Abstract
The present invention provides the adsorbent which adsorbs the aldehyde efficiently for a long period. The present invention also includes an adsorption device, an article and a method using the same. The adsorbent of the invention comprises a zeolite, wherein the zeolite has NH as ionic species; a crystal structure of ZSM-5 or ferrierite; a molar ratio of SiO /Al O from 30 to 190; and the zeolite retains a quarternary ammonium salt which adsorbs the aldehyde with the reaction of the aldehyde. In the case of a formaldehyde, the zeolite has NH as ionic species.