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:
Sep. 29, 1992
Filed:
Jul. 25, 1990
Applicant:
Inventors:
Susumu Okazaki, Mito City, JP;
Akito Kurosaki, Mito City, JP;
Assignee:
Dupont-Mitsui Fluorochemicals Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423659 ; 423481 ; 423D / ; 570227 ; 570228 ; 570229 ; 588208 ;
Abstract
A process for the catalytic decomposition of chlorofluoro-alkanes commonly named as 'flons' into harmless substances against destructing ozone layer of the stratosphere by using the catalyst comprising alumina or alumina -silica complexed oxide, wherein the range of Al/(Al+Si)atomic ratio is 1.0 to 0.5, in the presence of steam at the temperature of 350.degree. to 1.000.degree. C.