PATENT CLAIM ANALYSIS

Application Number: 16179994
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-05
Patent Classification: ["424", "049000"]

Abstract:
An abrasive type silica with low refractive index and high transparency, a preparation method and an application thereof are disclosed. The preparation method of the present invention includes the following steps: S1, a sodium sulfate solution is added into a reaction tank, the solution is heated to 80-95° C., a sodium silicate solution and a sulfuric acid solution are added at the same time while stirring, the dropping rate of the sodium silicate solution is controlled at 13-15 m 3 /h, the dropping rate of the sulfuric acid solution is controlled to ensure that the pH value of the reaction process is 3.0-4.5, and stirring is continued for 10-15 min after the adding is finished; and S2, the formed silica is filter pressed, washed, spray-dried and airflow crushed to prepare the abrasive type silica with low refractive index and high transparency.

Claim (Index 4):
The method of  claim 1 , wherein a salinity of the washed silica is 1.8-2%.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 98.0
- Lexical Diversity: 1.91358
- Patent Class: 424.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['10292986', '10996541', '10997377', '10997376', '10520466']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7281008590940617
- 35 USC 102 Novelty (BERT): 0.5197621596196802
- Combined Prediction Score: 0.7072669891466236
- Mean Citation Score: 197.00539
- Max Citation Score: 226.65086
- Similarity Product: 114.41946530331732

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