PATENT CLAIM ANALYSIS

Application Number: 15762147
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["257", "077000"]

Abstract:
A silicon carbide epitaxial substrate has a silicon carbide single-crystal substrate and a silicon carbide layer. An average value of carrier concentration in the silicon carbide layer is not less than 1×10 15  cm −3  and not more than 5×10 16  cm −3 . In-plane uniformity of the carrier concentration is not more than 2%. The second main surface has: a groove  80  extending in one direction along the second main surface, a width of the groove in the one direction being twice or more as large as a width thereof in a direction perpendicular to the one direction, and a maximum depth of the groove from the second main surface being not more than 10 nm; and a carrot defect. A value obtained by dividing a number of the carrot defects by a number of the grooves is not more than 1/500.

Claim (Index 8):
A method of manufacturing a silicon carbide semiconductor device, comprising:\n preparing the silicon carbide epitaxial substrate according to  claim 1 ; and processing the silicon carbide epitaxial substrate.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 90.0
- Lexical Diversity: 2.17143
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15750606', '15567443', '15319130', '15772183', '14786063']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9184261696449872
- 35 USC 102 Novelty (BERT): 0.46545959896522
- Combined Prediction Score: 0.8731295125770104
- Mean Citation Score: 222.512192
- Max Citation Score: 230.94504
- Similarity Product: 225.188708844881

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

Dataset: test