PATENT CLAIM ANALYSIS

Application Number: 16246136
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-05
Patent Classification: ["427", "352000"]

Abstract:
In this work, a hydrophilic, yet slippery solid surface was developed. Because the surfaces are hydrophilic, there is significant affinity between the surface and contacting water, which results in substantial spreading of the contacting liquids on the surface. Due to their strong affinity, a high solid-liquid adhesion having virtually no mobility of the water on the surface occurs. However, counter-intuitively, the disclosed surfaces are highly slippery such that liquids can slide on the surface while maintaining their hydrophilicity. Demonstrated herein are water droplets that can slide on the surface under its own weight, when the hydrophilic, yet slippery solid surface is slightly tilted (ω=3°). This indicates that the disclosed hydrophilic surfaces are slippery to water.

Claim (Index 14):
A method of forming a hydrophilic and slippery surface comprising:\n a) immersing a substrate having a hydroxylated surface in a solution consisting essentially of a PEG silane for a sufficient amount of time to covalently bond the PEG silane to the hydroxylated surface to form PEG brushes on the substrate; and b) washing the PEG brushes with water to remove excess PEG silane, thereby providing a hydrophilic and slippery surface that has a root mean square surface roughness (R rms ) of less than about 10 nanometers; wherein the hydroxylated surface is covalently bonded to the PEG brushes via O\u2014Si bonds, and the PEG brushes have an inter-tether distance (D) of less than about 20 nanometers.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 99.0
- Lexical Diversity: 1.85915
- Patent Class: 427.0
- Transitional Phrase Type: half
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15944619', '15879526', '15568639', '15804809', '15192425']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7862181473249901
- 35 USC 102 Novelty (BERT): 0.490274795710293
- Combined Prediction Score: 0.7566238121635204
- Mean Citation Score: 166.26777399999995
- Max Citation Score: 176.95433
- Similarity Product: 123.369774439432

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

Dataset: test