PATENT CLAIM ANALYSIS

Application Number: 15747849
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["117", "106000"]

Abstract:
A method for producing an epitaxial silicon carbide single crystal wafer comprised of a silicon carbide single crystal substrate having a small off angle on which a high quality silicon carbide single crystal film with little basal plane dislocations is provided, that is, a method for producing an epitaxial silicon carbide single crystal wafer epitaxially growing silicon carbide on a silicon carbide single crystal substrate using a thermal CVD method, comprising supplying an etching gas inside the epitaxial growth reactor to etch the surface of the silicon carbide single crystal substrate so that the arithmetic average roughness Ra value becomes 0.5 nm to 3.0 nm, then starting epitaxial growth to convert 95% or more of the basal plane dislocations at the surface of the silicon carbide single crystal substrate to threading edge dislocations.

Claim (Index 16):
The method for producing an epitaxial silicon carbide single crystal wafer according to  claim 8 , wherein said silicon carbide single crystal substrate has an off angle of tilt from the (0001) plane in the <11-20> direction of 2\u00b0 to 4\u00b0.

Metadata:
- Claim Count in Document: 45.0
- Percentile: 86.0
- Lexical Diversity: 1.98571
- Patent Class: 117.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15323655', '15032433', '13639309', '12735405', '15551871']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8276043057385556
- 35 USC 102 Novelty (BERT): 0.5421490437596148
- Combined Prediction Score: 0.7990587795406615
- Mean Citation Score: 359.6855720000001
- Max Citation Score: 392.17508
- Similarity Product: 336.7349725791478

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