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. 01, 1978
Filed:
Aug. 03, 1977
Applicant:
Inventor:
Henry Erickson, Park Forest, IL (US);
Assignee:
Atlantic Richfield Company, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208138 ; 208135 ; 252463 ;
Abstract
Alumina particles derived from hydrous alumina predominating in .alpha.-alumina monohydrate having a crystallite size of less than 100A and having increased porosity can be prepared by a process which comprises forming a mixture of an aqueous slurry of the hydrous alumina and at least one surface active agent, drying this mixture, forming macrosize particles from the dried mixture and calcining the macrosized particles.