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 5):
The method of  claim 1 , wherein the etching of the silicon-containing film includes:\n partially etching the silicon-containing film by plasma from the processing gas including a fluorine-containing gas; and additionally etching the silicon-containing film by plasma from the processing gas further including an additive gas, and the additive gas contains molecules containing fluorine, and binding energy of fluorine in the molecules contained in the additive gas is lower than binding energy of fluorine in molecules in the fluorine-containing gas.

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): 0.8646928050340309
- 35 USC 102 Novelty (BERT): 0.4812170857163263
- Combined Prediction Score: 0.8263452331022605
- Mean Citation Score: 181.690962
- Max Citation Score: 198.43732
- Similarity Product: 151.95192117450236

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