PATENT CLAIM ANALYSIS

Application Number: 15748528
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["423", "199000"]

Abstract:
A process for the recovery of sodium sulfate from water, in particular from water deriving from a silica manufacturing process.

Claim (Index 2):
The process of  claim 1  comprising the steps of:\n reacting sodium silicate and sulfuric acid in an aqueous liquid medium to obtain a suspension of precipitated silica; \n separating from the aqueous liquid medium and optionally washing the precipitated silica to provide wet precipitated silica and a water stream W 0  containing Na 2 SO 4 ; \n drying the wet precipitated silica in a drying apparatus, said apparatus discharging a flow of hot gas; \n providing heat to water stream W 0  in a heat-exchanger by means of the flow of hot gas to obtain water stream W i  at a temperature T i ; \n feeding the water stream W i  comprising Na 2 SO 4  at a concentration C i  into a membrane distillation unit comprising at least one membrane creating a feed side and a permeate side, wherein the water stream is fed into the feed side of the membrane distillation unit at a temperature T i  greater than the temperature T p  at the permeate side of the membrane distillation unit to obtain a water stream W f  containing Na 2 SO 4  at a concentration C f >C i ; and \n optionally separating solid Na 2 SO 4  from water stream W f .

Metadata:
- Claim Count in Document: 2.0
- Percentile: 86.0
- Lexical Diversity: 1.22222
- Patent Class: 423.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15223938', '12116339', '13624846', '15528120', '13850102']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7635815826705316
- 35 USC 102 Novelty (BERT): 0.4797801060302419
- Combined Prediction Score: 0.7352014350065026
- Mean Citation Score: 183.036646
- Max Citation Score: 193.77374
- Similarity Product: 144.19813439055562

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test