PATENT CLAIM ANALYSIS

Application Number: 15975852
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["438", "714000"]

Abstract:
A selectivity can be improved in a desirable manner when etching a processing target object containing silicon carbide. An etching method of processing the processing target object, having a first region containing silicon carbide and a second region containing silicon nitride and in contact with the first region, includes etching the first region to remove the first region atomic layer by atomic layer by repeating a sequence comprising: generating plasma from a first gas containing nitrogen to form a mixed layer containing ions contained in the plasma generated from the first gas in an atomic layer of an exposed surface of the first region; and generating plasma from a second gas containing fluorine to remove the mixed layer by radicals contained in the plasma generated from the second gas.

Claim (Index 10):
An etching method, comprising:\n preparing a processing target object having a first region made of a first material and a second region containing a material different from the first material; forming a layer containing nitrogen in the first region by exposing the processing target object to nitrogen plasma; and after the forming of the layer, removing the layer by exposing the processing target object to fluorine plasma, wherein the first region is removed by repeating the forming of the layer and the removing of the layer.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 93.0
- Lexical Diversity: 2.36842
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15954802', '15952328', '15007420', '14863863', '15952359']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8636457017148526
- 35 USC 102 Novelty (BERT): 0.4924097329593249
- Combined Prediction Score: 0.8265221048392998
- Mean Citation Score: 238.835716
- Max Citation Score: 256.23923
- Similarity Product: 208.3959786123181

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