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 3):
The method according to  claim 1 , wherein, in the allowing, bowing of the gallium nitride substrate is controlled by the flow rate ratio of ammonia gas to hydrogen chloride gas.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 93.0
- Lexical Diversity: 2.13725
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15991464', '15991505', '10110692', '14833732', '13533812']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8766722871238815
- 35 USC 102 Novelty (BERT): 0.4973556824060713
- Combined Prediction Score: 0.8387406266521005
- Mean Citation Score: 229.557938
- Max Citation Score: 245.02147
- Similarity Product: 182.8048105193556

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