PATENT CLAIM ANALYSIS

Application Number: 16060194
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["516", "090000"]

Abstract:
The present disclosure relates to methods of preparing sols of titanium dioxide nanoparticles that are photoactive, neutral, and in a substantially concentrated form. The methods particularly provide for concentrated sols in light of washing and dewatering under low cation concentrations and utilizing rapid peptizing through addition of the filter case to the peptizing agent. Concentrated acid may be utilized to maintain high TiO 2  concentration while still avoiding precipitation of the colloidal TiO 2 . Concentrated photoactive, neutral titanium dioxide sols are also provided as well as compositions thereof and photoactive coatings formed therewith.

Claim (Index 1):
A method for preparing a photocatalytic, neutral titanium dioxide sol, the method comprising:\n washing and dewatering a hydrous titanium dioxide gel with an aqueous solvent having a cation concentration of about 500 ppm or less until achieving a filtrate conductivity of about 750 \u03bcS/cm or less and forming a titanium dioxide filter cake; peptizing the titanium dioxide filter cake by adding the filter cake to an alkaline peptizing agent to provide a peptized alkaline titanium dioxide sol with a TiO 2  concentration of about 30% by weight or greater; neutralizing the peptized alkaline titanium dioxide sol with a concentrated acid to provide a photocatalytic, neutral titanium dioxide sol with a pH of about 7 to about 9 and a TiO 2  concentration of about 30% by weight or greater.

Metadata:
- Claim Count in Document: 47.0
- Percentile: 94.0
- Lexical Diversity: 1.49254
- Patent Class: 516.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13679252', '12031425', '11848967', '12595947', '12825922']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6694467733206343
- 35 USC 102 Novelty (BERT): 0.5149205196111439
- Combined Prediction Score: 0.6539941479496852
- Mean Citation Score: 269.877906
- Max Citation Score: 370.0985
- Similarity Product: 285.9127307718694

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