PATENT CLAIM ANALYSIS

Application Number: 16231960
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["514", "023000"]

Abstract:
The present invention provides a mangiferin-6-O-calcium salt and a preparation process thereof. In addition, use of the mangiferin-6-O-calcium salt as defined in claim  1  as an intermediate in the preparation of a mangiferin-6-O-berberine salt is also provided.

Claim (Index 2):
A preparation process of the mangiferin-6-O-calcium salt as defined in  claim 1 , wherein the preparation process comprises:\n (1) adding an alkaline sodium salt or an alkaline potassium salt into water to yield a solution of the alkaline sodium salt or a solution of the alkaline potassium salt, the solution having a concentration of 0.1%-2% (w/v); (2) dissolving mangiferin into dimethyl sulfoxide to yield a solution of the mangiferin; (3) slowly adding the mangiferin solution into the solution of the alkaline sodium salt or the solution of the alkaline potassium salt, fully stirring the solution until the solution is fully reacted at a temperature of 50\u00b0 C.-100\u00b0 C. to yield a solution of a mangiferin sodium salt or a solution of a mangiferin potassium salt; (4) dissolving a water-soluble calcium salt into water to yield a solution of the calcium salt; (5) sufficiently mixing the solution of the calcium salt with the solution of the mangiferin sodium salt or the solution of the mangiferin potassium salt for full reaction, yielding a precipitate, and filtering to yield a solid; and dissolving the solid into a suitable amount of hot water, filtering and yielding a precipitate, and filtering the precipitate to obtain a solid; (6) drying the solid to yield the mangiferin-6-O-calcium salt.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 98.0
- Lexical Diversity: 1.37931
- Patent Class: 514.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15619936', '13377863', '12744263', '12382247', '12967447']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7809425889697927
- 35 USC 102 Novelty (BERT): 0.5677731952547919
- Combined Prediction Score: 0.7596256495982926
- Mean Citation Score: 294.540136
- Max Citation Score: 436.1213
- Similarity Product: 425.11117909466026

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

Dataset: test