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 18):
The etching apparatus according to  claim 14 ,\n wherein the controller sequentially repeats and executes a plurality of times of cooling the stage unit to the melting point temperature or lower of the surface reaction layer which is generated on the surface of the treated body, by controlling the cooling unit, and heating the surface of the treated body to the 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): 0.846508070824238
- 35 USC 102 Novelty (BERT): 0.528955131470137
- Combined Prediction Score: 0.8147527768888279
- Mean Citation Score: 235.667456
- Max Citation Score: 309.2698
- Similarity Product: 201.4267058579684

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