PATENT CLAIM ANALYSIS

Application Number: 15745174
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["257", "607000"]

Abstract:
An epitaxial silicon wafer is provided with a boron-doped silicon substrate and an epitaxial layer formed on a surface of the silicon substrate, wherein the boron concentration in the silicon substrate is 2.7×10 17  atoms/cm 3  or more and 1.3×10 19  atoms/cm 3  or less, and an initial oxygen concentration in the silicon substrate is 11×10 17  atoms/cm 3  or less. When an oxygen precipitate evaluation heat treatment, such as a heat treatment at 700° C. for 3 hours and a heat treatment at 1,000° C. for 16 hours is executed on the epitaxial silicon wafer, the density of oxygen precipitate in the silicon substrate is 1×10 10 /cm 3  or less.

Claim (Index 1):
An epitaxial silicon wafer in which an epitaxial layer is formed on a surface of a boron-doped silicon substrate, wherein\n the boron concentration in the silicon substrate is 2.7\u00d710 17  atoms/cm 3  or more and 1.3\u00d710 19  atoms/cm 3  or less, an initial oxygen concentration in the silicon substrate is 11\u00d710 17  atoms/cm 3  or less, and when an oxygen precipitate evaluation heat treatment is executed on the epitaxial silicon wafer, the density of oxygen precipitate in the silicon substrate is 1\u00d710 10 /cm 3  or less.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 86.0
- Lexical Diversity: 2.14545
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['10384534', '12895950', '12714659', '11653070', '10985880']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9265252850728574
- 35 USC 102 Novelty (BERT): 0.4873334228655864
- Combined Prediction Score: 0.8826060988521304
- Mean Citation Score: 210.26467599999995
- Max Citation Score: 220.03444
- Similarity Product: 170.42451932256697

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test