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:
Jul. 28, 2015
Filed:
Sep. 07, 2012
Applicant:
Jon Bennett Jansma, Pepper Pike, OH (US);
Inventor:
Jon Bennett Jansma, Pepper Pike, OH (US);
Assignee:
GENERAL ELECTRIC COMPANY, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C01F 17/00 (2006.01); C09K 11/01 (2006.01);
U.S. Cl.
CPC ...
C09K 11/01 (2013.01);
Abstract
A method is provided for recovering phosphor materials from fluorescent lamps. Particles created from the lamps are washed by mixing with water and carboxylic (e.g., acetic) acid while controlling the temperature. The carboxylic acid reacts with basing cement, particularly calcium carbonate, without significant reaction with the phosphors. After this reaction, the phosphors can be removed and e.g., reused in the production of fluorescent lamps.