PATENT CLAIM ANALYSIS

Application Number: 16015376
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-10
Patent Classification: ["216", "099000"]

Abstract:
Disclosed is a substrate liquid processing apparatus that includes: a liquid processing unit that performs a liquid processing on a film formed on a surface of a substrate with an etching liquid; an etching liquid supply unit that supplies an etching liquid to the liquid processing unit; and a controller that controls the etching liquid supply unit. The controller is configured to perform a control such that an etching liquid in a state of having a relatively low etching rate for the film is supplied from the etching liquid supply unit to the liquid processing unit so that the substrate is etched in the liquid processing unit, and then, an etching liquid in a state of having a relatively high etching rate for the film is supplied from the etching liquid supply unit to the liquid processing unit so that the substrate is etched in the liquid processing unit.

Claim (Index 1):
A substrate liquid processing method comprising:\n setting an etching time and an etching amount for etching a substrate with a standard etching liquid having a predetermined standard etching rate for a silicon nitride film formed on a surface of a silicon oxide film which is formed on a surface of the substrate as a standard etching time and a standard etching amount, respectively; a first supplying from an etching liquid supply unit to a liquid processing unit, an etching liquid including a phosphoric acid aqueous solution and having a lower etching rate for the silicon nitride film than the predetermined standard etching rate for the silicon nitride film so that the silicon nitride film is etched; and after the first supplying the etching liquid, a second supplying from the etching liquid supply unit to the liquid processing unit, the etching liquid having a higher etching rate for the silicon nitride film than the predetermined standard etching rate for the silicon nitride film so that the silicon nitride film is further etched, thereby allowing an etching amount of the silicon oxide film to be smaller than an etching amount of the silicon oxide film in a case where the standard etching liquid is used to perform a liquid processing on the silicon nitride film.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 94.0
- Lexical Diversity: 3.25
- Patent Class: 216.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15152918', '15723301', '15002546', '13355709', '12203394']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7515772200396497
- 35 USC 102 Novelty (BERT): 0.4953372198285493
- Combined Prediction Score: 0.7259532200185396
- Mean Citation Score: 200.558246
- Max Citation Score: 274.07574
- Similarity Product: 219.6488247542453

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test