PATENT CLAIM ANALYSIS

Application Number: 15994343
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-10
Patent Classification: ["438", "531000"]

Abstract:
A step of forming a silicon carbide substrate includes steps of: forming a first impurity region having a first conductivity type by epitaxial growth; forming an embedded region by performing ion implantation into the first impurity region, the embedded region having a second conductivity type different from the first conductivity type, the embedded region being disposed cyclically; and forming a second impurity region by epitaxial growth, the second impurity region being in contact with the first impurity region and the embedded region, the second impurity region having the second conductivity type, the second impurity region having an impurity concentration lower than an impurity concentration of the embedded region. A trench is formed to have a side portion and a bottom portion. The trench is disposed at the same cycle as the embedded region.

Claim (Index 8):
The method for manufacturing the silicon carbide semiconductor device according to  claim 1 , wherein in the step of forming the trench, when viewed from the normal direction of the first main surface, the trench is formed such that a corner portions of the bottom portion of the trench overlaps with the embedded region.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 93.0
- Lexical Diversity: 2.57143
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14831580', '14917551', '15322860', '14651985', '13921674']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8984769976271555
- 35 USC 102 Novelty (BERT): 0.5280912718161339
- Combined Prediction Score: 0.8614384250460533
- Mean Citation Score: 351.186514
- Max Citation Score: 354.08755
- Similarity Product: 286.84217323817614

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