PATENT CLAIM ANALYSIS

Application Number: 15938481
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["257", "077000"]

Abstract:
A silicon carbide semiconductor device includes a silicon carbide semiconductor substrate of a first conductivity type, a first silicon carbide layer of the first conductivity type, and an insulating film. In the silicon carbide semiconductor device, no fluorine or chlorine is detectable in the insulating film, at a boundary layer of the insulating film and the first silicon carbide layer, or at the surface of first silicon carbide layer where the insulating film is provided.

Claim (Index 11):
A silicon carbide semiconductor device, comprising:\n a silicon carbide semiconductor substrate of a first conductivity type, having a front surface; a first silicon carbide layer of the first conductivity type provided on the front surface of the substrate, the first silicon carbide layer having a first surface, and a second surface opposite to the first surface and facing the front surface of the substrate; a second silicon carbide layer of the first conductivity type selectively provided in the first surface of the first silicon carbide layer, the second silicon carbide layer having a first surface, and a second surface opposite to the first surface and facing the first surface of the first silicon carbide layer; a third silicon carbide layer of a second conductivity selectively provided on the first surface of the second silicon carbide layer, the third silicon carbide layer having a first surface, and a second surface opposite to the first surface and facing the first surface of the second silicon carbide layer; a trench at least penetrating the third silicon carbide layer and reaching the second silicon carbide layer; and a gate insulating film provided on a surface of the trench, the gate insulating film having a first surface, and a second surface opposite to the first surface and facing the trench, a part of the first surface facing the second silicon carbide layer, wherein no fluorine or chlorine is detectable at least one of\n in the gate insulating film, \n at a boundary between the first surface of the gate insulating film and the second silicon carbide layer, and \n at a boundary between the trench and the second surface of the gate insulating film.

Metadata:
- Claim Count in Document: 18.0
- Percentile: 90.0
- Lexical Diversity: 2.48485
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13863043', '14408052', '15394950', '15397677', '14428840']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9230583016291573
- 35 USC 102 Novelty (BERT): 0.487585415535203
- Combined Prediction Score: 0.8795110130197618
- Mean Citation Score: 261.36717400000003
- Max Citation Score: 264.6121
- Similarity Product: 237.4553651745081

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