Patent ID: 9267920
Filing Date: 2016-02-23
CPC Classification: G01N,H01J,H05K

Claim Text:
1. A method for making a substantially cylindrical sensor structure, comprising: forming a substantially cylindrically shaped structure made of a high temperature, non-electrically-conductive ceramic material, by applying at least two discrete sheets of the high temperature, non-electrically-conductive ceramic material as overlaying layers about a cylindrical mandrel to form the shaped structure; forming at least one via hole in each of the at least two discrete sheets; forming circuitry features on each of the at least two discrete sheets, wherein the at least one via hole and the circuitry features are formed in each of the at least two discrete sheets before applying the at least two discreet sheets as overlaying layers to form the shaped structure; and processing the shaped structure to obtain the substantially cylindrical sensor structure; wherein the ceramic material is aluminum nitride or alumina.