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. 15, 2014
Filed:
Jun. 14, 2011
Applicants:
E. Neal Caldwell, Knoxville, TN (US);
John Kevin Hodges, Powell, TN (US);
Inventors:
E. Neal Caldwell, Knoxville, TN (US);
John Kevin Hodges, Powell, TN (US);
Assignee:
E. Neal Caldwell, Knoxville, TN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 3/06 (2006.01); C02F 1/00 (2006.01); B01D 24/42 (2006.01); B01D 24/10 (2006.01);
U.S. Cl.
CPC ...
C02F 3/06 (2013.01); C02F 1/003 (2013.01); C02F 2201/002 (2013.01); B01D 24/10 (2013.01); B01D 24/42 (2013.01); B01D 2101/04 (2013.01);
Abstract
A slow/intermittent sand filter that purifies polluted water by flowing through sand in a manner that achieves greater purity and permits simpler and more effective maintenance than existing filters.