Robert E Tatnall

55003680, Mar 19, 1996

Oct 21, 1994

8/327331

Robert E. Tatnall - Chadds Ford PA

Bio-Technical Resources - Manitowoc WI

B09B 300
C12N 100

435262

A method of inhibit sulfide production in a media containing sulfate-reducing bacteria is disclosed. The method comprises adding particles of a finely divided sulfide production-inhibiting anthraquinone to the medium. The particles have a particle size of 0. 1 to 2. 5 microns, preferably 2 to 0. 1 microns.

59252510, Jul 20, 1999

Jun 9, 1997

8/871710

Robert E. Tatnall - Chadds Ford PA

B01D 3900

21050039

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.