PATENT CLAIM ANALYSIS

Application Number: 16118672
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-03
Patent Classification: ["438", "723000"]

Abstract:
Provided is a method of etching a silicon-containing film made of at least one of silicon oxide and silicon nitride. The etching method includes: (i) preparing a workpiece having a silicon-containing film and a mask provided on the silicon-containing film in a chamber body of a plasma processing apparatus, in which an opening is formed in the mask; and (ii) etching the silicon-containing film, in which plasma is produced in the chamber body from processing gas containing fluorine, hydrogen, and iodine in order to etch the silicon-containing film, and a temperature of the workpiece is set to a temperature of 0° C. or less.

Claim (Index 7):
The method of  claim 5 , wherein the additionally etching of the silicon-containing film starts when it is determined that no silicon is released from the silicon-containing film based on emission intensity of a wavelength corresponding to silicon by emission of the plasma produced in the chamber body while the partially etching of the silicon-containing film is performed.

Metadata:
- Claim Count in Document: 21.0
- Percentile: 96.0
- Lexical Diversity: 1.98305
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16118982', '16315812', '13386213', '15605531', '15654947']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8645199194859086
- 35 USC 102 Novelty (BERT): 0.482681787545337
- Combined Prediction Score: 0.8263361062918514
- Mean Citation Score: 181.690962
- Max Citation Score: 198.43732
- Similarity Product: 149.7924513234663

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