PATENT CLAIM ANALYSIS

Application Number: 15892660
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["117", "011000"]

Abstract:
Disclosed herein is an SiC wafer producing method for producing an SiC wafer from a single crystal SiC ingot. The SiC wafer producing method includes a wafer producing step of separating a part of the ingot along a separation layer as an interface. The wafer producing step includes the steps of immersing the ingot in a liquid and applying the ultrasonic wave from an ultrasonic vibrator through the liquid to the ingot, the ultrasonic wave having a frequency greater than or equal to a critical frequency close to the natural frequency of the ingot.

Claim (Index 6):
The SiC wafer producing method according to  claim 1 , wherein said c-axis is inclined by an off angle with respect to a normal to said end surface of said SiC ingot;\n said separation layer forming step including: a modified portion forming step of applying said laser beam to said SiC ingot in the condition where said focal point is set at said predetermined depth as relatively feeding said SiC ingot and said focal point in a first direction perpendicular to a second direction where said off angle is formed between said c-plane and said end surface, thereby continuously forming said modified portions so that any adjacent ones of said modified portions overlap each other in said first direction; and an indexing step of relatively indexing said SiC ingot and said focal point in said second direction by a predetermined amount in the range not greater than the width of said cracks; said modified portion forming step and said indexing step being alternately performed to form said separation layer, in which said cracks adjacent to each other in said second direction are connected.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 88.0
- Lexical Diversity: 2.04167
- Patent Class: 117.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15833556', '15821045', '15611363', '15883297', '15663189']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8321683381833982
- 35 USC 102 Novelty (BERT): 0.5901945562833454
- Combined Prediction Score: 0.807970959993393
- Mean Citation Score: 444.386672
- Max Citation Score: 490.8873
- Similarity Product: 482.0662767553389

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test