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. 20, 1999
Filed:
Jun. 09, 1997
Robert E Tatnall, Chadds Ford, PA (US);
Other;
Abstract
A filter for removing particulate from petroleum distillate fuels exhibiting improved resistance to plugging due to sludge formation during use is disclosed. The filter is a conventional fibrous, paper, sintered metal or sintered ceramic filter capable of removing at least 50 weight percent of the particulates from a petroleum distillate fuel. The filter medium has deposited thereon a substantially continuous coating which is comprised from 0 to 50 weight percent of a film forming amine and from 50 to 100 weight percent of a biodispersant. The film forming amine film is, preferably, N-(cocoalkyl)-1,3-propane diamine. The preferred biodispersants are the imidazolines of which 1-(2-hydroxyethyl)-2- octyldecyl-2-imidazoline is most preferred.