PATENT CLAIM ANALYSIS

Application Number: 16032078
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2018-11
Patent Classification: ["117", "074000"]

Abstract:
The present invention relates to the purification of silicon. The present invention provides a method for purification of silicon. The method includes recrystallizing starting material-silicon from a molten solvent comprising aluminum to provide final recrystallized-silicon crystals. The method also includes washing the final recrystallized-silicon crystals with an aqueous acid solution to provide a final acid-washed-silicon. The method also includes directionally solidifying the final acid-washed-silicon to provide final directionally solidified-silicon crystals.

Claim (Index 1):
A method for purification of silicon, comprising:\n recrystallizing starting material silicon from solvent metal comprising aluminum, wherein the recrystallizing comprises:\n contacting the starting material silicon with the solvent metal comprising the aluminum; \n if necessary, melting the starting material silicon and the solvent metal comprising the aluminum to provide a first molten mixture; and \n cooling the first molten mixture to form recrystallized silicon crystals; \n washing the recrystallized silicon crystals with aqueous acid, the washing comprising:\n combining the recrystallized silicon crystals with a first acid solution having a first acid concentration to provide a first wash mixture to allow the recrystallized silicon crystals to react at least partially with the first acid solution to form a first silicon-aluminum complex; \n separating the first silicon-aluminum complex from the first wash mixture; \n combining the separated first silicon-aluminum complex with a second acid solution having a second acid concentration to provide a second wash mixture to allow the first silicon-aluminum complex to react at least partially with the second acid solution to form a first silicon, wherein the second acid concentration is higher than the first acid concentration; \n separating the first silicon from the second wash mixture to provide an acid-washed silicon: \n combining the acid-washed silicon with a first rinse solution to provide a first rinse mixture; and \n separating silicon from the first rinse mixture to provide a purified silicon; and \n directionally solidifying the purified silicon to provide a directionally solidified silicon.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 95.0
- Lexical Diversity: 1.97368
- Patent Class: 117.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12670263', '12729561', '13494710', '12784576', '12288857']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7731499328738033
- 35 USC 102 Novelty (BERT): 0.5145233080423356
- Combined Prediction Score: 0.7472872703906566
- Mean Citation Score: 296.593192
- Max Citation Score: 314.5261799999999
- Similarity Product: 238.6470645267605

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