PATENT CLAIM ANALYSIS

Application Number: 15768846
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-02
Patent Classification: ["423", "325000"]

Abstract:
There is provided a method for obtaining a purified aqueous solution of silicic acid containing less metal impurities such as Cu and Ni using water glass as a raw material with less number of purification steps than that in conventional methods without using any unnecessary additives. The method for producing a purified aqueous solution of silicic acid, the method comprising the steps of: (a) passing an aqueous solution of alkaline silicate having a silica concentration of 0.5% by mass or more and 10% by mass or less through a column filled with a polyamine-, iminodiacetic acid-, or aminophosphoric acid-type chelating resin, and (b) passing the aqueous solution passed in the step (a) through a column filled with a hydrogen-type cation exchange resin.

Claim (Index 2):
The method according to  claim 1 , wherein the aqueous solution is passed at a space velocity of 0.1 or more and 15 or less in the step (a) and the step (b).

Metadata:
- Claim Count in Document: 3.0
- Percentile: 91.0
- Lexical Diversity: 1.73418
- Patent Class: 423.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['13617453', '13727791', '13603715', '14690946', '13137661']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7835696173796716
- 35 USC 102 Novelty (BERT): 0.5106303045532238
- Combined Prediction Score: 0.7562756860970268
- Mean Citation Score: 202.033594
- Max Citation Score: 207.87703
- Similarity Product: 115.27972936474325

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