US 11,719,642 B2
Portable water quality instrument
Mark C. Peterman, Fremont, CA (US); Merwan Benhabib, San Francisco, CA (US); and Samuel Kleinman, Oakland, CA (US)
Assigned to OndaVia, Inc., Hayward, CA (US)
Filed by OndaVia, Inc., Hayward, CA (US)
Filed on Nov. 16, 2021, as Appl. No. 17/527,844.
Application 17/527,844 is a continuation of application No. 16/280,651, filed on Feb. 20, 2019, abandoned.
Application 16/280,651 is a continuation of application No. 14/198,163, filed on Mar. 5, 2014, granted, now 10,254,229, issued on Apr. 9, 2019.
Application 14/198,163 is a continuation in part of application No. 12/589,365, filed on Oct. 21, 2009, granted, now 8,702,976, issued on Apr. 22, 2014.
Application 12/589,365 is a continuation in part of application No. 12/082,094, filed on Apr. 7, 2008, granted, now 8,070,956, issued on Dec. 6, 2011.
Claims priority of provisional application 60/912,681, filed on Apr. 18, 2007.
Prior Publication US 2022/0146430 A1, May 12, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 21/65 (2006.01); G01J 3/02 (2006.01); G01J 3/18 (2006.01); G01J 3/44 (2006.01); G01N 21/47 (2006.01); G01N 21/63 (2006.01); G01N 21/66 (2006.01); G01N 21/68 (2006.01); G01N 27/44 (2006.01); G01N 30/60 (2006.01); B01D 15/08 (2006.01); B01D 43/00 (2006.01); B01D 57/02 (2006.01); B01L 3/00 (2006.01); G01N 27/447 (2006.01); G01N 21/49 (2006.01); C02F 1/28 (2023.01); B01D 35/30 (2006.01); G01N 33/18 (2006.01); G01N 30/00 (2006.01); G01J 3/28 (2006.01)
CPC G01N 21/65 (2013.01) [B01D 15/08 (2013.01); B01D 35/30 (2013.01); B01D 43/00 (2013.01); B01D 57/02 (2013.01); B01L 3/502761 (2013.01); C02F 1/28 (2013.01); G01J 3/02 (2013.01); G01J 3/0256 (2013.01); G01J 3/0291 (2013.01); G01J 3/18 (2013.01); G01J 3/44 (2013.01); G01J 3/4412 (2013.01); G01N 21/47 (2013.01); G01N 21/4785 (2013.01); G01N 21/49 (2013.01); G01N 21/63 (2013.01); G01N 21/658 (2013.01); G01N 21/66 (2013.01); G01N 21/68 (2013.01); G01N 27/44704 (2013.01); G01N 27/44791 (2013.01); G01N 30/6095 (2013.01); G01N 33/18 (2013.01); B01L 2200/04 (2013.01); B01L 2200/0652 (2013.01); B01L 2200/12 (2013.01); B01L 2300/0627 (2013.01); B01L 2300/0636 (2013.01); B01L 2300/0654 (2013.01); B01L 2300/0681 (2013.01); B01L 2300/087 (2013.01); B01L 2300/0867 (2013.01); B01L 2400/0418 (2013.01); B01L 2400/0421 (2013.01); G01J 2003/2866 (2013.01); G01J 2003/2879 (2013.01); G01N 30/6065 (2013.01); G01N 2021/651 (2013.01); G01N 2021/656 (2013.01); G01N 2030/0095 (2013.01); G01N 2201/0221 (2013.01); G01N 2201/13 (2013.01)] 17 Claims
OG exemplary drawing
 
9. A method of using electrokinetics for separating particles in a buffer solution comprising:
a. providing a chromatographic column, wherein said column has a non-uniform internal longitudinal cross-section;
b. providing at least one main inlet and at least one main outlet, wherein said solution is input to said main inlet and output from said main outlet;
c. providing at least one sample inlet and at least one sample outlet, wherein said particle is introduced to said column from said at least one sample inlet and fractionated samples are eluted from said at least one sample outlet, whereby quality control and further analysis are enabled;
d. applying an electric field to said buffer solution in said column to generate a charged double layer at a solid-liquid interface within said column, wherein said electric field moves ions within said charged double layer, whereas a non-uniform velocity profile is induced to said buffer solution, whereby moving ions carry said particles along said column and said particles are separated according to size or charge.