PATENT CLAIM ANALYSIS

Application Number: 15915979
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["257", "077000"]

Abstract:
Provided is a MOS gate using a thermally oxidized film as a gate insulating film on the front surface of a silicon carbide substrate. A ratio of an excess carbon amount at an SiO 2 /SiC interface in relation to a carbon amount in the silicon carbide substrate is 0.1 or less. The excess carbon at the SiO 2 /SiC interface is generated during thermal oxidation for forming the gate insulating film. The excess carbon is a compound constituted of carbon atoms having the pi (it) bonds, and specifically is graphite, for example. The amount of nitrogen at the SiO 2 /SiC interface is 1.4×10 15 /cm 2  to 1.8×10 15 /cm 2 , inclusive, for example.

Claim (Index 2):
The silicon carbide semiconductor device according to  claim 1 ,\n wherein an amount of the nitrogen at the interface between the gate insulating film and the semiconductor substrate is 1.4\u00d710 15 /cm 2  to 1.8\u00d710 15 /cm 2 , inclusive.

Metadata:
- Claim Count in Document: 38.0
- Percentile: 90.0
- Lexical Diversity: 1.98438
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14778058', '10494616', '14960285', '15691107', '11991249']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9281212860578294
- 35 USC 102 Novelty (BERT): 0.5087453942930267
- Combined Prediction Score: 0.8861836968813491
- Mean Citation Score: 250.899142
- Max Citation Score: 284.2237
- Similarity Product: 212.14226531735665

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