PATENT CLAIM ANALYSIS

Application Number: 16110039
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2018-12
Patent Classification: ["385", "127000"]

Abstract:
Provided is an optical fiber containing an alkali metal element or the like having a smaller diffusion coefficient than K and having a low Rayleigh scattering loss. An optical fiber is composed of silica glass and includes a core and a cladding arranged to surround the core which has a lower refractive index than the core. The core includes a first core including a central axis and a second core arranged to surround the first core. The average concentration of an alkali metal element or alkaline-earth metal element in the first core is 10 mol ppm or less. The average concentration of chlorine in the first core is 2000 mol ppm or more. The average concentration of an alkali metal element or alkaline-earth metal element in the second core is 10 mol ppm or more. The average concentration of chlorine in the second core is 10 to 600 mol ppm.

Claim (Index 6):
An optical fiber composed of silica glass, the optical fiber comprising:\n a core including a first core including a central axis, an intermediate core arranged to circumscribe the first core, and a second core arranged to circumscribe the intermediate core, the first core containing an alkali metal element or alkaline-earth metal element such that the average concentration of the alkali metal element or alkaline-earth metal element in the first core is 10 mol ppm or less, the first core containing chlorine such that the average concentration of chlorine in the first core is 2000 mol ppm or more, the intermediate core containing an alkali metal element or alkaline-earth metal element such that the average concentration of the alkali metal element or alkaline-earth metal element in the intermediate core is 10 mol ppm or less, the intermediate core containing chlorine such that the average concentration of chlorine in the intermediate core is 10 to 600 mol ppm, the second core containing an alkali metal element or alkaline-earth metal element such that the average concentration of the alkali metal element or alkaline-earth metal element in the second core is 10 mol ppm or more, the second core containing chlorine such that the average concentration of chlorine in the second core is 10 to 600 mol ppm; and a cladding arranged to surround the core, the cladding having a lower refractive index than the core.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 96.0
- Lexical Diversity: 2.66102
- Patent Class: 385.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14127266', '14569987', '13441978', '13741553', '14743270']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.83733350353584
- 35 USC 102 Novelty (BERT): 0.5109068899290421
- Combined Prediction Score: 0.8046908421751603
- Mean Citation Score: 304.268262
- Max Citation Score: 321.84824
- Similarity Product: 278.02792989820955

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

Dataset: test