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Class Information
Number: 324/697
Name: Electricity: measuring and testing > Impedance, admittance or other quantities representative of electrical stimulus/response relationships > Lumped type parameters > Using resistance or conductance measurement > With object or substance characteristic determination using conductivity effects > For interface
Description: Subject matter including means to evaluate the point or points of contact between different substances.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7405578 |
Device for monitoring the contact integrity of a joint |
Jul. 29, 2008 |
| 6853199 |
Interface detector |
Feb. 8, 2005 |
| 6452500 |
Hydrocarbon sensing apparatus |
Sep. 17, 2002 |
| 6277438 |
Protective fullerene (C60) packaging system for microelectromechanical systems applications |
Aug. 21, 2001 |
| 6240778 |
Liquid level point switch sensor |
Jun. 5, 2001 |
| 5661405 |
Elongate sensor having polymeric electrodes filled with conductive particles and having braided sleeves |
Aug. 26, 1997 |
| 5648727 |
Capacitive level sensing pipette probe |
Jul. 15, 1997 |
| 5542289 |
Apparatus and method for the study of liquid-liquid interfacial rheology |
Aug. 6, 1996 |
| 5444383 |
Device, system and method for measuring an interface between two fluids |
Aug. 22, 1995 |
| 5444384 |
Method and device of contactless measurement of electric voltages in a unit under measurement with an insulating surface |
Aug. 22, 1995 |
| 5245292 |
Method and apparatus for sensing a fluid handling |
Sep. 14, 1993 |
| 5077527 |
Encoding system and method for differential capacitive transducer |
Dec. 31, 1991 |
| 5075631 |
Encoding system and method for differential capacitive transducer |
Dec. 24, 1991 |
| 5032794 |
Method and apparatus for monitoring changes in underwater sediment levels |
Jul. 16, 1991 |
| 4962041 |
Method and apparatus for automatic processing and analyzing of blood serum |
Oct. 9, 1990 |
| 4918374 |
Method and apparatus for inspecting integrated circuit probe cards |
Apr. 17, 1990 |
| 4885529 |
Identification of fluids and an interface between fluids by measuring complex impedance |
Dec. 5, 1989 |
| 4833918 |
Sensor and method for ullage level and flow detection |
May. 30, 1989 |
| 4796017 |
Low water level alarm for Christmas tree stand |
Jan. 3, 1989 |
| 4780705 |
Overfill sensing system |
Oct. 25, 1988 |
| 4780663 |
Gauge for measuring the conductance of a liquid present between two electrodes |
Oct. 25, 1988 |
| 4695789 |
Probe devices |
Sep. 22, 1987 |
| 4558714 |
Resin interface detection system |
Dec. 17, 1985 |
| 4553087 |
Method and apparatus for determining the penetration and leaching process of conductive phases |
Nov. 12, 1985 |
| 4487836 |
Method and apparatus for detecting boundary surface between blood plasma and blood corpuscle suspension |
Dec. 11, 1984 |
| 4286208 |
Fluid interface detector |
Aug. 25, 1981 |
| 4006063 |
Method for measuring surface characteristics of metals and metalloids |
Feb. 1, 1977 |
| 4002996 |
Level detector using oscillator circuit with two capacitive probes |
Jan. 11, 1977 |
| 3995212 |
Apparatus and method for sensing a liquid with a single wire transmission line |
Nov. 30, 1976 |
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