PATENT CLAIM ANALYSIS

Application Number: 15765349
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["356", "237200"]

Abstract:
Provided is an apparatus for inspecting the back surface of an epitaxial wafer, capable of detecting defects in the back surface of an epitaxial wafer. An epitaxial wafer back surface inspection apparatus has an optical system including an annular fiber optic illuminator and an imaging unit which are placed perpendicular to the back surface of an epitaxial wafer; and a scanning unit operating the optical system in parallel with the back surface to scan the back surface. A light source of the annular fiber optic illuminator is composed of either blue LEDs or red LEDs.

Claim (Index 8):
The method of inspecting a back surface of an epitaxial wafer, according to  claim 4 , wherein in the detecting defects, a dot-like reference defect at a position apart from a center of the back surface of the epitaxial wafer by a predetermined distance is selected, the position of the reference defect is defined as a first reference position, defects in the vicinity of a plurality of second reference positions defined by shifting the first reference position by equal angles around the center are selected, and a group of dot-like defects at the first reference position and in the vicinity of the second reference positions are detected as pin marks.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 91.0
- Lexical Diversity: 1.92308
- Patent Class: 356.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15757856', '10887786', '11311943', '13709493', '12154593']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6734545021067228
- 35 USC 102 Novelty (BERT): 0.5019506906883151
- Combined Prediction Score: 0.656304120964882
- Mean Citation Score: 181.483124
- Max Citation Score: 230.1973
- Similarity Product: 163.72726871753932

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test