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. 04, 1977
Filed:
Mar. 01, 1974
Applicant:
Inventors:
Frederick G Baker, Tyrone, NY (US);
David L Eaton, Horseheads, NY (US);
Assignee:
Corning Glass Works, Corning, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B02C / ; B02C / ;
U.S. Cl.
CPC ...
241 20 ; 2323 / ; 241 24 ; 252408 ; 424-15 ; 424 12 ;
Abstract
An aqueous suspension of porous glass particles having a closely controlled average particle size within the range of about 0.7 to about 3.0 microns. The controlled particle size porous glass particles are prepared by initially milling course porous glass particles to yield particles of about 10 microns or less, leaching those particles to remove contaminants and residues, rinsing the particles, and then mixing the particles with an aqueous solution and subjecting the mixture to at least two controlled sedimentation steps.