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Class Information
Number: 324/554
Name: Electricity: measuring and testing > Fault detecting in electric circuits and of electric components > Of individual circuit component or element > Insulation > Sheet material
Description: Subject matter where sheets of insulating material used for electric circuits and in electric components are tested for insulation qualities.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6469513 |
Automated stationary/portable test system for applying a current signal to a dielectric material being tested |
Oct. 22, 2002 |
| 6323659 |
Material for improved sensitivity of stray field electrodes |
Nov. 27, 2001 |
| 6285196 |
Process for the electrical testing of the base material for the manufacture of printed circuit boards |
Sep. 4, 2001 |
| 5703487 |
Detection of charge deficient spot susceptibility |
Dec. 30, 1997 |
| 5638003 |
Method and apparatus for testing surface breakdown of dielectric materials caused by electrical tracking |
Jun. 10, 1997 |
| 5594349 |
Dielecrtric breakdown prediction apparatus and method, and dielectric breakdown life-time prediction apparatus and method |
Jan. 14, 1997 |
| 5508622 |
Coating defect detector system |
Apr. 16, 1996 |
| 5457390 |
Circuit board manufacture |
Oct. 10, 1995 |
| 5194815 |
Detecting apparatus of conductive material contained in stringy material |
Mar. 16, 1993 |
| 5097214 |
Method and apparatus for determining the properties of an insulation layer by maintaining an output current ratio generated by directing ions at the insulation layer |
Mar. 17, 1992 |
| 4939469 |
Non-destructive method for evaluation of printed wiring boards |
Jul. 3, 1990 |
| 4904946 |
Method for evaluating insulating films |
Feb. 27, 1990 |
| 4751467 |
System for determining liquid flow rate through leaks in impermeable membrane liners |
Jun. 14, 1988 |
| 4583040 |
Testing apparatus for electrical characteristics of sheet-like insulating materials |
Apr. 15, 1986 |
| 4567428 |
Detection of catastrophic failure of dielectric, improper connection, and temperature of a printed circuit assembly via one wire |
Jan. 28, 1986 |
| 4504782 |
Detection of catastrophic failure of dielectric, improper connection, and temperature of a printed circuit assembly via one wire |
Mar. 12, 1985 |
| 4417701 |
Method and means for controlling the manufacture of windings for inductive apparatus |
Nov. 29, 1983 |
| 4360774 |
Apparatus for measuring the surface insulation characteristics of coatings on magnetic materials |
Nov. 23, 1982 |
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