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:
Aug. 31, 1976
Filed:
Sep. 07, 1972
Henry Erickson, Park Forest, IL (US);
Atlantic Richfield Company, Philadelphia, PA (US);
Abstract
A composition of matter useful, for example, as a catalyst component, comprising macrosized particles containing a mixture of two distinct phases, the phases being 1) calcined discrete entities comprising first alumina a major portion of which have a minimum dimension greater than about 50 microns and a maximum dimension of less than 200 microns and 2) a phase comprising calcined second alumina wherein the weight ratio of (1) to (2) is within the range from about 0.05:1 to about 2:1 and the second alumina is first calcined after the formation of microsize particles. Methods for producing this composition of matter and for using this composition of matter in a hydrocarbon conversion process are also included.