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:
Mar. 18, 2003
Filed:
Aug. 14, 2001
Applicant:
Inventor:
George R. Butler, Crockett, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/42 ; G21F 9/04 ;
U.S. Cl.
CPC ...
C02F 1/42 ; G21F 9/04 ;
Abstract
A flow through drain filter for removing trash, sediment, liquid hydrocarbons, and metal ions comprised of at least four concentric screens having a deionizing filter material disposed between an exit screen and a second middle inner screen and hydrophobic and liquid hydrocarbon absorbent material disposed between first and second middle screens and a sediment capture space between the first middle screen and a trash exclusion intake screen.