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:
Feb. 17, 1987
Filed:
Jun. 04, 1981
Applicant:
Inventor:
Robert A Long, Towanda, PA (US);
Assignee:
GTE Products Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
241 20 ; 241 21 ; 241 24 ;
Abstract
Fired phosphor powder is deagglomerated by introducing a slurry thereof to the bottom of a vibratory mill while water is added to the top of the mill. This establishes a vertical gradient in the phosphor concentration in the slurry, the bottom being thicker than the top. The fine phosphor particles move out faster through an outlet at the top, while the coarse particles receive longer milling time.