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:
Jun. 16, 1981
Filed:
Aug. 29, 1979
Roland Jacques, Ales, FR;
Regis Poisson, Sevres, FR;
Rhone-Poulenc Industries, Paris, FR;
Abstract
Spheroidal alumina shaped articles are prepared by dispersing an ungelled admixture of an alumina sol and hexamethylenetetramine, in the form of droplets, into a liquid forming medium which is but very slightly miscible with water, said medium being at a temperature of between about 50.degree. and 105.degree. C., next aging the alumina spheres thus shaped at a temperature greater than about 105.degree. C. at superatmospheric pressure, then secondarily aging said alumina spheres in a basic medium, and thence washing, drying and calcining said aged alumina spheres. The resultant shaped articles are useful, e.g., catalysts or catalyst carriers/supports.