PATENT CLAIM ANALYSIS

Application Number: 15906862
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-02
Patent Classification: ["438", "705000"]

Abstract:
In an etching method of etching a tungsten film, the method is provided to execute a generating a surface reaction layer on a tungsten film that is formed on a surface of a base material by supplying a reactive species including fluorine which is generated in plasma onto the base material for a first predetermined time in a state where the base material of which the tungsten film is formed on at least a portion of the surface is cooled to a melting point temperature or lower of a tungsten fluoride, and a removing the surface reaction layer that is generated on the tungsten film by heating the base material of which the surface reaction layer is generated on the tungsten film to a boiling point temperature or higher of the tungsten fluoride for a second predetermined time.

Claim (Index 1):
An etching method of etching a tungsten film which is formed on a surface of a base material, the method comprising:\n generating a surface reaction layer on the tungsten film that is formed on the surface of the base material by supplying a reactive species including fluorine which is generated in plasma onto the base material for a first predetermined time in a state where the base material of which the tungsten film is formed on at least a portion of the surface is cooled to a melting point temperature or lower of a tungsten fluoride; and removing the surface reaction layer that is generated on the tungsten film by heating the base material of which the surface reaction layer is generated on the tungsten film to a boiling point temperature or higher of the tungsten fluoride for a second predetermined time.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 88.0
- Lexical Diversity: 2.47368
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15698823', '10959501', '11211531', '12332017', '13412534']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.830918623018538
- 35 USC 102 Novelty (BERT): 0.5194185165396139
- Combined Prediction Score: 0.7997686123706456
- Mean Citation Score: 235.667456
- Max Citation Score: 309.2698
- Similarity Product: 247.57192365837096

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