PATENT CLAIM ANALYSIS

Application Number: 16084898
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-03
Patent Classification: ["372", "043010"]

Abstract:
A distributed feedback semiconductor laser of includes a semiconductor stacked body and a first electrode. The semiconductor stacked body includes a first layer, an active layer that is provided on the first layer and is configured to emit laser light by an intersubband optical transition, and a second layer that is provided on the active layer. The semiconductor stacked body has a first surface including a flat portion and a trench portion; the flat portion includes a front surface of the second layer; the trench portion reaches the first layer from the front surface; the flat portion includes a first region and a second region; the first region extends along a first straight line; the second region extends to be orthogonal to the first straight line; and the trench portion and the second region outside the first region form a diffraction grating having a prescribed pitch along the first straight line. The first electrode is provided in the first region.

Claim (Index 1):
A distributed feedback semiconductor laser, comprising:\n a semiconductor stacked body including a first layer, an active layer, and a second layer, the active layer being provided on the first layer and being configured to emit laser light by an intersubband optical transition, the second layer being provided on the active layer; and a first electrode, the semiconductor stacked body having a first surface including a flat portion and a trench portion, the flat portion including a front surface of the second layer, the trench portion reaching the first layer from the front surface, the flat portion including a first region and a second region, the first region extending along a first straight line, the second region extending to be orthogonal to the first straight line, the trench portion and the second region outside the first region forming a diffraction grating having a prescribed pitch along the first straight line, and the first electrode being provided in the first region.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 97.0
- Lexical Diversity: 2.96552
- Patent Class: 372.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15693601', '12980907', '12435562', '12794929', '13565008']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8051210684913664
- 35 USC 102 Novelty (BERT): 0.4814020390906306
- Combined Prediction Score: 0.7727491655512928
- Mean Citation Score: 206.869268
- Max Citation Score: 224.7009
- Similarity Product: 190.11720208718776

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

Dataset: test