PATENT CLAIM ANALYSIS

Application Number: 16221272
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["257", "077000"]

Abstract:
A MOS gate having a trench gate structure is formed on the front surface side of a silicon carbide substrate. A gate trench of the trench gate structure goes through an n +  source region and a p-type base region and reaches an n −  drift region. Between adjacent gate trenches, a first p +  region that goes through the p-type base region in the depth direction and reaches the n −  drift region is formed at a position separated from the gate trenches. The first p +  region is formed directly beneath a p ++  contact region. The width of the first p +  region is less than the width w1 of the gate trench. A second p +  region is formed at the bottom of the gate trench. The first and second p +  regions are silicon carbide epitaxial layers.

Claim (Index 4):
The semiconductor device according to  claim 1 , further comprising:\n a fourth semiconductor region of the second conductivity type that is selectively formed within the second semiconductor layer and has a greater impurity concentration than the second semiconductor region, wherein the first electrode contacts the first semiconductor region and the fourth semiconductor region, and wherein the second semiconductor region is formed on a side of the fourth semiconductor region facing the second electrode and contacts the fourth semiconductor region.

Metadata:
- Claim Count in Document: 19.0
- Percentile: 98.0
- Lexical Diversity: 2.45902
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15665883', '15722934', '15716919', '15800577', '16121096']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9343386221032034
- 35 USC 102 Novelty (BERT): 0.5356773319169575
- Combined Prediction Score: 0.8944724930845788
- Mean Citation Score: 328.31150400000007
- Max Citation Score: 374.74054
- Similarity Product: 300.17574931289914

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