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 9):
The method of  claim 1 , wherein the first acid solution comprises a first HCl solution having a first HCl concentration and the second acid solution comprises a second HCl solution having a second HCl concentration that is higher than the first HCl concentration, wherein the washing of the recrystallized silicon crystals further comprises:\n after separating the first silicon from the second wash mixture and before combining the acid-washed silicon with the first rinse solution, combining the first silicon with a third HCl solution to provide a third wash mixture, wherein the third HCl solution comprises a third HCl concentration that is higher than the first HCl concentration and the second HCl concentration, and wherein the first silicon reacts at least partially with the third HCl solution, to form a second silicon; separating the second silicon from the third wash mixture, to provide a first silicon and the strong HCl solution the acid-washed silicon that is combined with the first rinse solution to provide the first rinse mixture; wherein after separating the purified silicon from the first rinse mixture the purified silicon is wet, the method further comprising;\n drying the wet purified silicon to provide a dried purified silicon, wherein directionally solidifying the purified silicon comprises directionally solidifying the dried purified silicon; \n removing a portion of the first HCl solution to maintain the pH and specific gravity of the first HCl solution; \n transferring a portion of the third HCl solution to the first HCl solution to maintain the pH of the first HCl solution, the volume of the first HCl solution, the specific gravity of the first HCl solution, or a combination thereof; \n adding a portion of a bulk HCl solution to the third HCl solution to maintain the pH of the third HCl solution, the volume of the third HCl solution, the specific gravity of the third HCl solution, or a combination thereof; \n transferring a portion of the first rinse solution to the third HCl solution to maintain the pH of the third HCl solution, the volume of the third HCl solution, the specific gravity of the third HCl solution, or a combination thereof; and \n adding fresh water to the first rinse solution to maintain the volume of the first rinse solution.

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): 0.7729329339028992
- 35 USC 102 Novelty (BERT): 0.5174885195082098
- Combined Prediction Score: 0.7473884924634303
- Mean Citation Score: 296.593192
- Max Citation Score: 314.5261799999999
- Similarity Product: 217.70638091677657

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