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 17):
The etching apparatus according to  claim 14 ,\n wherein the controller heats the surface of the treated body to a boiling point temperature or higher of the surface reaction layer which is formed on the treated body for the second predetermined time, by controlling the heating unit.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 88.0
- Lexical Diversity: 2.47368
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15698823', '10959501', '11211531', '12332017', '13412534']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8465342956391864
- 35 USC 102 Novelty (BERT): 0.5285460224202856
- Combined Prediction Score: 0.8147354683172963
- Mean Citation Score: 235.667456
- Max Citation Score: 309.2698
- Similarity Product: 204.0351050524473

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