Patent application 13889809 (US), filed 2013-05-08
Publication number: US20140332385A1
Title: ELECTRO-SEPARATION OF OIL-BASED DRILLING FLUIDS
CPC codes: B03C   5/02
B01D  17/06
B01D  21/0009
B01D  21/283
B01D2221/04
B03C   5/00
B03C  11/00
B03C2201/02
Office action: rejection, dated 2015-10-16
Rejection reasons: obviousness_103
Prior art cited: ref_id: JPS 58145793
ref_type: patent
severity: obviousness
ref_id: 6139710
ref_type: patent
severity: obviousness
Final disposition: granted (2015-10-16)