PATENT CLAIM ANALYSIS

Application Number: 15903745
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-10
Patent Classification: ["062", "612000"]

Abstract:
A system and method for liquefying a natural gas stream, including a liquefaction heat exchanger having at least three cooling bundles and arranged such that the natural gas stream passes sequentially therethrough. A first cooling bundle condenses heavy hydrocarbon components in the natural gas stream. A second cooling bundle liquefies the natural gas stream. A third cooling bundle sub-cools the LNG stream. A hydraulic turbine has an inlet operationally connected to an outlet of the second cooling bundle, and an outlet operationally connected to an inlet of the third cooling bundle. The hydraulic turbine cools the LNG stream and reduces the pressure of the LNG stream to form a reduced-pressure LNG stream.

Claim (Index 23):
A method of liquefying a natural gas stream to produce liquefied natural gas (LNG), comprising:\n sequentially cooling the natural gas stream in a liquefaction heat exchanger having first, second, and third cooling bundles, wherein the second cooling bundle liquefies the natural gas stream to produce an LNG stream; cooling and reducing the pressure of the LNG stream between the second cooling bundle and the third cooling bundle using a hydraulic turbine; producing work energy using the hydraulic turbine; using the work energy, generating power using a generator connected to the hydraulic turbine; controlling a pressure of the LNG stream exiting the hydraulic turbine using a control valve disposed between the outlet of the hydraulic turbine and an inlet of the third cooling bundle; and adjusting at least one of\n a speed of the hydraulic turbine, \n an LNG inlet rate of the hydraulic turbine, \n a position of the control valve, and \n a speed of the generator, \n based on at least one of a sensed temperature of the LNG stream prior to entering the hydraulic turbine, a sensed pressure of the LNG stream prior to entering the hydraulic turbine, a sensed temperature of the LNG stream as the LNG stream exits the hydraulic turbine, and a sensed pressure of the LNG stream as the LNG stream exits the hydraulic turbine.

Metadata:
- Claim Count in Document: 57.0
- Percentile: 88.0
- Lexical Diversity: 2.10526
- Patent Class: 62.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15347968', '14027726', '15693767', '11381904', '15414100']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8506559044227829
- 35 USC 102 Novelty (BERT): 0.4996065248775213
- Combined Prediction Score: 0.8155509664682569
- Mean Citation Score: 283.8079160000001
- Max Citation Score: 291.4720200000001
- Similarity Product: 248.64600738160385

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