Patent ID: 11924972
Assignee: APPLIED MATERIALS, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 3:
4. The diagnostic disc of claim 3, wherein the disc-shaped body comprises a notch at a first position on the circumference, wherein a first protrusion of the four protrusions is positioned at an angle of about 170°-180° from the first position of the notch, wherein a second protrusion of the four protrusions is positioned at an angle of about 225°-235° from the first position of the notch, wherein a third protrusion of the four protrusions is positioned at an angle of about 295°-305° from the first position of the notch, and wherein a fourth protrusion of the four protrusions is positioned at an angle of about 55°-65° from the first position of the notch.