PATENT CLAIM ANALYSIS

Application Number: 15773391
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["257", "076000"]

Abstract:
A manufacturing method for a group III nitride semiconductor substrate is provided with a first step of forming a second group III nitride semiconductor layer on a substrate; a second step of forming a protective layer on the second group III nitride semiconductor layer; a third step of selectively forming pits on dislocation portions of the second group III nitride semiconductor layer by gas-phase etching applied to the protective layer and the second group III nitride semiconductor layer; and a fourth step of forming a third group III nitride semiconductor layer on the second group III nitride semiconductor layer and/or the remaining protective layer so as to allow the pits to remain.

Claim (Index 34):
The manufacturing method as claimed in  claim 33 , wherein the gas-phase etching is performed under conditions where N 2 /(H 2 +NH 3 ) flow rate ratio is set to 0 to 2,\n NH 3 /H 2  flow rate ratio when NH 3  is supplied is set to 0.001 to 2, NH 3  stop period is set to 1 sec to 20 sec, NH 3  supply period is set to 1 sec to 15 sec, and the number of times of repetition of a set of both the NH 3  stop period and NH 3  supply period is set to 5 to 200.

Metadata:
- Claim Count in Document: 118.0
- Percentile: 93.0
- Lexical Diversity: 2.7619
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['12866147', '10268998', '13057696', '12373655', '12999726']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9225435265001508
- 35 USC 102 Novelty (BERT): 0.5305978677116713
- Combined Prediction Score: 0.8833489606213027
- Mean Citation Score: 282.9709200000001
- Max Citation Score: 295.16824
- Similarity Product: 158.18628874630932

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