Method for analysis of a working fluid using impedance...

Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C324S663000, C702S065000

Reexamination Certificate

active

07109729

ABSTRACT:
An on-line method for determining the condition of low conductivity working fluids using alternating current, electro-impedance spectroscopy is provided by making measurements over a range of frequencies at temperatures at or above 50° C.

REFERENCES:
patent: 3990960 (1976-11-01), Ellison
patent: 4029554 (1977-06-01), Ellison
patent: 5296843 (1994-03-01), Wohlstein et al.
patent: 5425867 (1995-06-01), Dawson et al.
patent: 5489849 (1996-02-01), Sadoway et al.
patent: 5523692 (1996-06-01), Kuroyanagi et al.
patent: 5540086 (1996-07-01), Park et al.
patent: 5691701 (1997-11-01), Wohlstein et al.
patent: 5739916 (1998-04-01), Englehaupt
patent: 5824889 (1998-10-01), Park et al.
patent: 5900810 (1999-05-01), Park et al.
patent: 5907278 (1999-05-01), Park et al.
patent: 5929754 (1999-07-01), Park et al.
patent: 6091484 (2000-07-01), Venica et al.
patent: 6268737 (2001-07-01), Marszalek
patent: 6577112 (2003-06-01), Lvovich et al.
patent: 19741892 (1999-04-01), None
patent: 19757924 (1999-07-01), None
patent: 10100624 (2001-07-01), None
patent: 1014082 (2000-06-01), None
patent: 1111383 (2001-06-01), None
patent: 2820824 (2001-02-01), None
patent: 9958965 (1999-11-01), None
Popkirov, et al—“Optimization of the Pertubation Signal for Electrochemical Impedance Spectroscopy in the Time Domain”— Nov. 1993— pp. 3111-3115— New York, US—#XP000955440.
Wang, et al—“The Application of A.C. Impedance Technique for Detecting Glycol Contamination in Engine Oil” — May 15, 1997 — pp. 193-197— Warren, Michigan, USA.
J. Ross Macdonald, editor. “Impedance Spectroscopy EmPhasizing Solid Materials and Systems”, John Wiley & Sons, New York, 1987, pp. 4-6.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for analysis of a working fluid using impedance... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for analysis of a working fluid using impedance..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for analysis of a working fluid using impedance... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3528235

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.