PATENT CLAIM ANALYSIS

Application Number: 15754113
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["210", "638000"]

Abstract:
Producing high purity lithium solution from a lithium source containing dissolved Na + , Ca 2+ , and Mg 2+ , by: passing the source into and out of a bed of sorbent composed of hydrated alumina intercalated with LiX, preferably LiCl, to extract lithium from the lithium source into the sorbent; washing the bed of sorbent with dilute aqueous LiCl to remove lithium from the sorbent to obtain a lithium eluent of increased Li +  concentration; subjecting this eluent to nanofiltration to produce a lithium permeate from which Ca2+, Mg2+, and other nanofilterable components are concurrently removed, yielding a permeate solution with 25% or less, and a retentate solution with 75% or more Ca 2+  and Mg 2+ , as compared to the eluent from washing; and subjecting the permeate solution to a particular forward osmosis yielding a solution having 13,000-25,000 ppm dissolved lithium. Specified optional steps and new features can be used to increase lithium concentrations and purity.

Claim (Index 3):
A process as in  claim 1  further comprising subjecting, after conducting the nanofiltration of (C), said aqueous lithium-containing permeate solution to pressurized reverse osmosis through a plurality of successive or parallel semi-permeable reverse osmosis membranes in units that reduce the water content of said permeate solution to produce a recyclable water stream in said units and thereby increase the lithium concentration of said permeate solution so that it is in the range of about 3,000 to about 9,000 ppm of dissolved lithium.

Metadata:
- Claim Count in Document: 38.0
- Percentile: 88.0
- Lexical Diversity: 2.0
- Patent Class: 210.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13283311', '14529324', '13029908', '15702277', '13002591']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7903019605457634
- 35 USC 102 Novelty (BERT): 0.4756642053347548
- Combined Prediction Score: 0.7588381850246626
- Mean Citation Score: 219.592154
- Max Citation Score: 226.88597
- Similarity Product: 189.338468501668

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

Dataset: test