PATENT CLAIM ANALYSIS

Application Number: 15744987
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["062", "620000"]

Abstract:
A method for producing a helium gas stream from a gas source containing at least helium, methane, and nitrogen is provided. The method includes introducing the gas into a double column nitrogen rejection unit.

Claim (Index 15):
A process for producing a helium gas stream from a source gas stream comprising at least helium, methane and nitrogen, the process comprising the following steps:\n step a): introducing the source gas stream into a double-column nitrogen rejection unit, the double column comprising a high-pressure distillation column, a low-pressure distillation column and a condenser linking the high-pressure column with the low-pressure column, the condenser comprising an outlet, and the high-pressure column comprising a top, and the low-pressure column comprising a top; step b): extracting at the outlet of the condenser at least one part of a mixture produced at the top of the high-pressure column; step c): expanding the mixture resulting from step b) to an intermediate pressure of between 8 bar and 20 bar absolute; step d): separating the intermediate pressure mixture resulting from step c) in a first phase separator vessel into a liquid phase and a helium-enriched gas phase; step e): at least partially condensing the helium-enriched gas phase in a heat exchanger; step f): separating the at least partially condensed stream resulting from step e) in a second phase separator vessel into a liquid phase and a gas phase containing more than 50% by volume of helium.

Metadata:
- Claim Count in Document: 35.0
- Percentile: 86.0
- Lexical Diversity: 1.31034
- Patent Class: 62.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['11409432', '14260753', '15041359', '15340541', '10860689']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8238979051892991
- 35 USC 102 Novelty (BERT): 0.4764350341268514
- Combined Prediction Score: 0.7891516180830543
- Mean Citation Score: 208.50692400000003
- Max Citation Score: 212.93227
- Similarity Product: 171.95209940303445

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