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 10):
The distributed feedback semiconductor laser according to  claim 2 , wherein\n a pitch along the first straight line in the second region in a central portion forms a second-order diffraction grating, a pitch along the first straight line in the second region provided at end portions on two sides of the central portion forms a first-order diffraction grating, an opening is provided in the first electrode in a region adjacent to the central portion, and the laser light is emitted in a substantially perpendicular direction from the first region exposed at the opening.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 97.0
- Lexical Diversity: 2.96552
- Patent Class: 372.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15693601', '12980907', '12435562', '12794929', '13565008']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8229016863461037
- 35 USC 102 Novelty (BERT): 0.4851259311902509
- Combined Prediction Score: 0.7891241108305185
- Mean Citation Score: 206.869268
- Max Citation Score: 224.7009
- Similarity Product: 187.30725151948928

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

Dataset: test