Patents Assigned to Azonic Technology, Inc.
  • Nitride etch bath
    Patent number: 4559098
    Abstract: An acid bath including an inner vessel, having non-opaque wall sections, is sealingly mounted within an outer housing with electric heating elements mounted therebetween. A condensing lid is mounted to enclose the inner vessel to prevent escape of acid fumes therefrom, an optical-type sensor is mounted to transmit and receive optical signals through the non-opaque walls to determine liquid level within the vessel.
    Type: Grant
    Filed: October 4, 1984
    Date of Patent: December 17, 1985
    Assignee: Azonic Technology, Inc.
    Inventor: Joseph V. Dunn