US 12,259,377 B2
Detecting hydrocarbon fuels in lubrication oils
Maha Nour, Thuwal (SA); Amjad Felemban, Thuwal (SA); and Hamad Al Saiari, Al-Khobar (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Apr. 5, 2022, as Appl. No. 17/713,640.
Prior Publication US 2023/0314402 A1, Oct. 5, 2023
Int. Cl. G01N 33/28 (2006.01); B01L 3/00 (2006.01)
CPC G01N 33/2841 (2013.01) [B01L 3/502715 (2013.01); B01L 2300/0851 (2013.01); B01L 2300/0858 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A microfluidic apparatus comprising:
a plate defining a microfluidic channel configured to flow lubrication oil, the microfluidic channel having an inlet for receiving the lubrication oil and an outlet for discharging the lubrication oil, the plate defining a plurality of walls of the microfluidic channel, the plurality of walls extending from the inlet to the outlet; and
a plurality of micro-protrusion baffles located within the microfluidic channel and distributed between the inlet and the outlet, each micro-protrusion baffle extending from any of the plurality of walls, each micro-protrusion baffle comprising a cyclic olefin copolymer that is insoluble in acyclic saturated hydrocarbons, each micro-protrusion baffle configured to at least partially dissolve in a presence of an aromatic hydrocarbon in the lubrication oil flowed through the microfluidic channel.