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. 05, 1980
Filed:
Nov. 13, 1978
Applicant:
Inventor:
Edward Michalko, Hemet, CA (US);
Assignee:
UOP Inc., Des Plaines, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ;
U.S. Cl.
CPC ...
252448 ; 252463 ; 423628 ;
Abstract
A method of preparing high surface area-high average bulk density spheroidal alumina particles is disclosed. Spheroidal alumina hydrogel particles prepared by the oil drop method are aged in an aqueous ammoniacal solution containing from about 4 to about 20 wt. % ammonium salt, and thereafter water-washed, dried and calcined to yield high surface area spheroidal alumina particles having an average bulk density of from about 0.6 to about 0.8 grams per cubic centimeter.