PATENT CLAIM ANALYSIS

Application Number: 15935471
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["166", "305100"]

Abstract:
Processes for selective extraction of surface active naphthenic acids from high total acid number crude oils for use in enhanced oil recovery are provided.

Claim (Index 1):
A method for selective extraction of surface active naphthenic acids from an acidic crude oil, comprising:\n providing a crude oil having a total acid number (TAN) greater than 0.4; mixing the crude oil with an aqueous solution to extract a portion of naphthenic acids from the crude oil into the aqueous solution thereby creating a crude oil/water emulsion; wherein the aqueous solution comprises water and a weak base; separating the aqueous solution containing the portion of naphthenic acids from the crude oil; wherein the aqueous solution will contain an additional portion of the crude oil; adding a salt to the aqueous solution, thereby causing the additional portion of the crude oil to separate from the aqueous solution; removing the additional portion of the crude oil from the aqueous solution; and extracting the naphthenic acids from the aqueous solution.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 90.0
- Lexical Diversity: 1.04167
- Patent Class: 166.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12631177', '13382387', '14269667', '14861364', '10944288']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7896243300075302
- 35 USC 102 Novelty (BERT): 0.4807277484222956
- Combined Prediction Score: 0.7587346718490068
- Mean Citation Score: 228.857738
- Max Citation Score: 242.16127000000003
- Similarity Product: 184.57758561395232

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