PATENT CLAIM ANALYSIS

Application Number: 15743534
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["216", "037000"]

Abstract:
Disclosed is a dry etching method for etching a laminated film of silicon oxide layers and silicon nitride layers on a substrate. The dry etching method includes providing a mask on the laminated film, generating a plasma from a dry etching agent and etching the laminated film by the plasma through the mask under a bias voltage of 500 V or higher to form a through hole in the laminated film vertically to the layers, wherein the dry etching agent contains at least C 3 H 2 F 4 , an unsaturated perfluorocarbon represented by C x F y  and an oxidizing gas, and wherein a volume of the unsaturated perfluorocarbon contained in the dry etching agent is 0.1 to 10 times a volume of the C 3 H 2 F 4  contained in the dry etching agent.

Claim (Index 10):
The dry etching method according to  claim 1 ,\n wherein an amount of the unsaturated perfluorocarbon in the dry etching agent is set larger during etching of the silicon oxide layers than during etching of the silicon nitride layers.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 86.0
- Lexical Diversity: 2.2
- Patent Class: 216.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15003270', '13808506', '14841271', '15798476', '15560332']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7539395352435069
- 35 USC 102 Novelty (BERT): 0.5183530472206921
- Combined Prediction Score: 0.7303808864412255
- Mean Citation Score: 243.12406
- Max Citation Score: 311.71075
- Similarity Product: 242.0362215615213

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