PATENT CLAIM ANALYSIS

Application Number: 16184734
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-03
Patent Classification: ["257", "077000"]

Abstract:
A method of producing a semiconductor device including steps (A) and (B). Step (A) is preparing a semiconductor epitaxial wafer including a plurality of device regions, each including a body region contacting a semiconductor layer. Step (B) is forming a channel layer contacting at least a part of the body region by epitaxial growth of a semiconductor on a surface of the semiconductor layer. The channel layer contains an impurity at a concentration ranging from 1×10 18  cm −3  to 1×10 19  cm −3 , inclusive, and has a thickness ranging from 10 nm to 100 nm, inclusive. In the step (B), a condition for the epitaxial growth is controlled so that, in a plane parallel to the main surface of the semiconductor wafer, a thickness distribution in the channel layer and a concentration distribution of the impurity in the channel layer are negatively correlated to each other.

Claim (Index 3):
The method according to  claim 1 , wherein the semiconductor wafer is a silicon carbide wafer, the semiconductor layer is a silicon carbide semiconductor layer, and the channel layer is constituted by a silicon carbide semiconductor.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 98.0
- Lexical Diversity: 2.34722
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15896490', '15397677', '14122823', '14897247', '15394950']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9361120818980356
- 35 USC 102 Novelty (BERT): 0.586660364932717
- Combined Prediction Score: 0.901166910201504
- Mean Citation Score: 344.54284399999995
- Max Citation Score: 478.881
- Similarity Product: 460.4396520005464

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