PATENT CLAIM ANALYSIS

Application Number: 16050025
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2018-11
Patent Classification: ["385", "003000"]

Abstract:
An optical element has a substrate; and first to third optical waveguides formed on the substrate and each having a lower clad layer, a core layer, and an upper clad layer, the core layer having a larger refractive index than the lower clad layer and the upper clad layer. The first optical waveguide is optically connected to the second optical waveguide, and the second optical waveguide is optically connected to the third optical waveguide. The first to third optical waveguides have a mesa structure formed in a mesa shape in which at least the upper clad layer and an upper part of the core layer project above the lower clad layer. The core height of the third optical waveguide is lower than the core height of the first optical waveguide. The mesa width of the third optical waveguide is narrower than the mesa width of the first optical waveguide.

Claim (Index 7):
A manufacturing method of an optical element including a first optical waveguide, a second optical waveguide, and a third optical waveguide having a lower clad layer, a core layer, and an upper clad layer in which the core layer has a larger refractive index than the lower clad layer and the upper clad layer, wherein the first optical waveguide is optically connected to the second optical waveguide, and the second optical waveguide is optically connected to the third optical waveguide, the manufacturing method comprising steps of:\n stacking the lower clad layer, the core layer, and the upper clad layer on a substrate; forming a hard mask on the upper clad layer; and dry-etching at least the upper clad layer and an upper part of the core layer by using the hard mask as a mask, wherein the hard mask has a first mask part and second mask parts, wherein the first mask part has a waveguide pattern of the first optical waveguide, a waveguide pattern of the second optical waveguide, and a waveguide pattern of the third optical waveguide, and a width of the waveguide pattern of the third optical waveguide is narrower than a width of the waveguide pattern of the first optical waveguide, and wherein the second mask parts are selectively formed in regions on both sides of the waveguide pattern of the third optical waveguide out of regions on both sides of the waveguide patterns of the first to third optical waveguides of the first mask part.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 95.0
- Lexical Diversity: 3.18
- Patent Class: 385.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12320031', '13590718', '12530759', '13254336', '12530569']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8320905796948442
- 35 USC 102 Novelty (BERT): 0.518698056817257
- Combined Prediction Score: 0.8007513274070855
- Mean Citation Score: 295.2845779999999
- Max Citation Score: 332.71298
- Similarity Product: 252.505851224742

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