PATENT CLAIM ANALYSIS

Application Number: 15991481
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-12
Patent Classification: ["438", "479000"]

Abstract:
Disclosed a method of fabricating a gallium nitride substrate using hydride vapor phase epitaxy (HVPE), including a step of injecting ammonia (NH 3 ) gas to perform first surface treatment on a sapphire substrate; a step of injecting ammonia gas and hydrogen chloride (HCl) gas to form a buffer layer on the sapphire substrate; a step of injecting ammonia gas to perform second surface treatment on the sapphire substrate; and a step of allowing gallium nitride (GaN) to grow on the sapphire substrate while lowering the flow rate ratio of ammonia gas to hydrogen chloride gas stepwise.

Claim (Index 1):
A method of fabricating a gallium nitride substrate, comprising:\n injecting ammonia (NH 3 ) gas to perform first surface treatment on a sapphire substrate; injecting ammonia gas and hydrogen chloride (HCl) gas to form a buffer layer on the sapphire substrate; injecting ammonia gas to perform second surface treatment on the sapphire substrate; and allowing gallium nitride (GaN) to grow on the sapphire substrate while lowering a flow rate ratio (x:1) of ammonia gas to hydrogen chloride gas (NH 3 :HCl) stepwise.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 93.0
- Lexical Diversity: 2.13725
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15991464', '15991505', '10110692', '14833732', '13533812']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8637571315083095
- 35 USC 102 Novelty (BERT): 0.4901149154163358
- Combined Prediction Score: 0.8263929098991121
- Mean Citation Score: 229.557938
- Max Citation Score: 245.02147
- Similarity Product: 195.0933618760104

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