PATENT CLAIM ANALYSIS

Application Number: 16069613
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["252", "181000"]

Abstract:
The present invention discloses a novel hydrophilic and compressible aerogel as draw agent for purification water in forward osmosis (FO), which belongs to environmental pollution control engineering technical field. The improved performances are obtained by optimizing regeneration process of drawing and producing water by using this aerogel as a draw agent in FO technology. Herein, the aerogel complete avoid the draw solution's reverse diffusion and maintain a higher water flux that compensates for its structure characteristics. Moreover, the regeneration of the draw agent and production water should be accomplished through human compression without a complicated physical and chemical method. Simultaneously, this draw agent presents other advantages of wide raw material sources, low cost, wild preparation process, low poison and good film compatibility. It is an innovation as FO technology in portable water purifying device, especially in areas of military and emergency.

Claim (Index 1):
A draw agent of hydrophilic and compressible aerogels for purification water in forward osmosis is characterized by:\n Step 1; a uniform mixed solution of sodium alginate SA and graphene oxide solid GO is obtained under sonication treatment after a period of time, wherein, the weight ratio of SA:GO is 100:1\u02dc8:1, GO concentration is 0.2\u02dc2.5 mg/mL; Step 2: add CaCl 2  aqueous solution into the mixed solution in Step 1 and stand for 24\u02dc48 h at room temperature; The molar ratio of CaCl 2 :sugar units in SA is 3:1\u02dc1:1; Put the synthesized hydrogel into deionized water and stand at room temperature; Replace the deionized water every 3 h until the solution conductivity is no more increasing; Step 3: Pre-freeze the hydrogel in Step 2 at \u221225\u02dc\u221215\u00b0 C. for 2\u02dc4 h, and then freeze-dry it at \u221260 \u02dc\u221290\u00b0 C. for 24\u02dc48 h; Step 4: Use the obtained aerogel in Step 3 as draw agent for purifying water from wastewater or brackish water in FO process.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 95.0
- Lexical Diversity: 1.53398
- Patent Class: 252.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15548189', '15359617', '10327300', '09817459', '15040327']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7957603451131166
- 35 USC 102 Novelty (BERT): 0.4642194248475017
- Combined Prediction Score: 0.762606253086555
- Mean Citation Score: 104.4481432
- Max Citation Score: 107.9548
- Similarity Product: 73.62708267083168

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

Dataset: test