Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2008-01-08
2008-01-08
Drodge, Joseph (Department: 1723)
Liquid purification or separation
Processes
Treatment by living organism
C159S047100, C159S049000, C210S774000, C210S806000, C203S089000
Reexamination Certificate
active
10876059
ABSTRACT:
Pseudo-distillation, steady-state method for purifying dry cleaning solvents containing laundry soils and other contaminants.
REFERENCES:
patent: 3619116 (1971-11-01), Saville
patent: 3775053 (1973-11-01), Wisdom
patent: 2004/0148708 (2004-08-01), Stoessel et al.
patent: 0 340 482 (1989-08-01), None
patent: 989788 (1965-04-01), None
Arredondo Victor Manuel
Haught John Christian
Radomyselski Arseni Valerevich
Scheper William Michael
Sivik Mark Robert
Drodge Joseph
Miller Steven W.
The Procter & Gamble & Company
William Zerby Kim
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