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Class Information
Number: 208/179
Name: Mineral oils: processes and products > Refining > Purifying used oil
Description: Processes for treating used mineral oils to render them suitable for reuse.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7378012 |
Method for reforming lubricating oil used in lubricating an engine with a sliding region |
May. 27, 2008 |
| 7288685 |
Production of olefins from biorenewable feedstocks |
Oct. 30, 2007 |
| 7267760 |
Method of removing contaminants from used oil |
Sep. 11, 2007 |
| 7261808 |
Upgrading of pre-processed used oils |
Aug. 28, 2007 |
| 7255785 |
Apparatus and process for treatment of waste oils |
Aug. 14, 2007 |
| 7241377 |
Salt bath refining |
Jul. 10, 2007 |
| 7232935 |
Process for producing a hydrocarbon component of biological origin |
Jun. 19, 2007 |
| 7226533 |
Process for re-refining used oils by solvent extraction |
Jun. 5, 2007 |
| 7208079 |
Process for the treatment of waste oils |
Apr. 24, 2007 |
| 7150822 |
Five degrees for separation |
Dec. 19, 2006 |
| 6929737 |
Method of removing contaminants from petroleum distillates |
Aug. 16, 2005 |
| 6821413 |
Method and apparatus for continuous separation and reaction using supercritical fluid |
Nov. 23, 2004 |
| 6729145 |
Process plant |
May. 4, 2004 |
| 6712954 |
Method for reprocessing waste oils, base oils obtained according to said method and use thereof |
Mar. 30, 2004 |
| RE38366 |
Oil re-refining method and apparatus |
Dec. 30, 2003 |
| 6589417 |
Thermal apparatus and process for removing contaminants from oil |
Jul. 8, 2003 |
| 6485632 |
Apparatus and method for reclaiming waste oil for use as fuel for a diesel engine |
Nov. 26, 2002 |
| 6457563 |
Arrangement in a circulation lubrication system |
Oct. 1, 2002 |
| 6447672 |
CONTINUOUS PLURAL STAGE HEATED VAPOR INJECTION PROCESS FOR RECOVERING LUBE OIL BASE STOCKS FROM USED MOTOR OIL FORMULATIONS, AND ASPHALT BLEND COMPOSITIONS CONTAINING USED MOTOR OIL BOTTOMS FR |
Sep. 10, 2002 |
| 6440298 |
Method of reclaiming waste oil |
Aug. 27, 2002 |
| 6402937 |
"Pumped" recycle vapor |
Jun. 11, 2002 |
| 6402938 |
Vaporization of used motor oil with non-hydrogenating recycle vapor |
Jun. 11, 2002 |
| 6398948 |
Method of removing contaminants from used oil |
Jun. 4, 2002 |
| 6395166 |
Method of reclaiming used motor oil for further use |
May. 28, 2002 |
| 6372122 |
Method of removing contaminants from petroleum distillates |
Apr. 16, 2002 |
| 6319394 |
Method of removing contaminants from petroleum distillates |
Nov. 20, 2001 |
| 6287455 |
Purifier for lubricating oil or hydraulic oil |
Sep. 11, 2001 |
| 6270657 |
Asphalt blend compositions containing used motor oil and asphalt pavement compositions containing said asphalt blend compositions |
Aug. 7, 2001 |
| 6270678 |
Method for treating alkaline waste water |
Aug. 7, 2001 |
| 6258332 |
Apparatus and method for collecting and recycling a petroleum by-product |
Jul. 10, 2001 |
| 6238551 |
Method of removing contaminants from petroleum distillates |
May. 29, 2001 |
| 6191077 |
Method of cleaning liquid cooling lubricants |
Feb. 20, 2001 |
| RE36922 |
Process of used lubricant oil recycling |
Oct. 24, 2000 |
| 6132596 |
Process and apparatus for the treatment of waste oils |
Oct. 17, 2000 |
| 6126843 |
Process for the antimicrobial treatment of cooling lubricants |
Oct. 3, 2000 |
| 6117309 |
Method of rerefining waste oil by distillation and extraction |
Sep. 12, 2000 |
| 6106699 |
Process for de-chlorinating and de-fouling oil |
Aug. 22, 2000 |
| 6090273 |
Process to remove ash-forming contaminants from wet used oil |
Jul. 18, 2000 |
| 6068759 |
Process for recovering lube oil base stocks from used motor oil formulations, asphalt blend compositions containing used motor oil bottoms from said process, and asphalt pavement compositions |
May. 30, 2000 |
| 6024880 |
Refining of used oils using membrane- and adsorption-based processes |
Feb. 15, 2000 |
| 6013174 |
Process to remove ash-forming contaminants from used oil |
Jan. 11, 2000 |
| 6007701 |
Method of removing contaminants from used oil |
Dec. 28, 1999 |
| 5976357 |
Purification of oil |
Nov. 2, 1999 |
| 5948242 |
Process for upgrading heavy crude oil production |
Sep. 7, 1999 |
| 5919353 |
Method for thermally reforming emulsion |
Jul. 6, 1999 |
| 5904838 |
Process for the simultaneous conversion of waste lubricating oil and pyrolysis oil derived from organic waste to produce a synthetic crude oil |
May. 18, 1999 |
| 5900155 |
Method and apparatus for reconditioning oil of vehicles |
May. 4, 1999 |
| 5888375 |
Method of treating oil sludge |
Mar. 30, 1999 |
| 5885444 |
Process for converting waste motor oil to diesel fuel |
Mar. 23, 1999 |
| 5871618 |
Apparatus for reclaiming fuel oil from waste oil |
Feb. 16, 1999 |
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