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:
Oct. 16, 1984
Filed:
Apr. 22, 1983
Applicant:
Inventors:
Horacio E Bergna, Wilmington, DE (US);
Joseph J Kirkland, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ; C02F / ;
U.S. Cl.
CPC ...
427215 ; 427219 ; 428403 ; 428406 ; 2101982 ; 210656 ; 55 67 ; 55386 ;
Abstract
There is disclosed a process for preparing superficially porous macroparticles comprising spray drying a specified well-mixed slurry of core macroparticles, colloidal inorganic microparticles and a liquid and sintering the resulting product to cause a 5%-30% decrease in surface area.