Chemistry: electrical and wave energy – Apparatus – Electrolytic
Reexamination Certificate
2007-01-24
2011-12-20
Olsen, Kaj K (Department: 1724)
Chemistry: electrical and wave energy
Apparatus
Electrolytic
C204S416000
Reexamination Certificate
active
08080142
ABSTRACT:
There is provided a sample preparation device and method for preparing a sample of liquid for detection of impurities. First (40) and second (38) electrodes are provided, located for immersion in a liquid under test. A semipermeable membrane (42) is positioned to protect the first electrode (40) from a body of liquid under test (32). The semipermeable membrane allows the liquid under test to pass therethrough to reach the first electrode, while preventing solids carried in the liquid from reaching the first electrode, the first electrode being positioned to affect the liquid under test in the vicinity of a sensor (36). Particular embodiments feature a hydrophilic membrane to protect the electrodes from suspended solids in the sample, a thin electrode assembly to achieve a faster response and the addition of a heater for temperature control to achieve consistent detection conditions and improved anti-fouling properties.
REFERENCES:
patent: 4298573 (1981-11-01), Fujishiro
patent: 4661234 (1987-04-01), Takahashi et al.
patent: 4882033 (1989-11-01), Shibata et al.
patent: 4938861 (1990-07-01), Kurosawa et al.
patent: 6726818 (2004-04-01), Cui et al.
patent: 7201836 (2007-04-01), Vogel et al.
patent: 0359 158 (1989-09-01), None
patent: 0 637 381 (1996-09-01), None
patent: 1 260 813 (2002-11-01), None
patent: 2 290 617 (1996-01-01), None
patent: 5142177 (1993-06-01), None
patent: 6102234 (1994-04-01), None
patent: 10332629 (1998-12-01), None
patent: WO 96/25662 (1996-08-01), None
patent: WO 96/28728 (1996-09-01), None
patent: WO 98/22813 (1998-05-01), None
patent: WO 99/46587 (1999-09-01), None
Glantz Douglas Gene
Olsen Kaj K
Water Security and Technology, Inc.
LandOfFree
Impurity detection device and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Impurity detection device and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impurity detection device and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4315823