PATENT CLAIM ANALYSIS

Application Number: 15861105
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["208", "309000"]

Abstract:
Methods of extracting 1-4 cycle heterocyclic compounds and 2-5 cycle polynuclear aromatic hydrocarbons from a hydrocarbon feedstock are described. The methods include providing a hydrocarbon feedstock containing crude oil fractions, and determining an A/R ratio and an asphaltene concentration of the hydrocarbon feedstock. Based upon the A/R ratio and the asphaltene concentration, the treatable hydrocarbon feedstock undergoes one or more of cracking and fractionating. Subsequently, at least one targeted portion of the heterocyclic compounds is extracted from the fractionated stream with an aqueous solvent. A stream containing the 2-5 cycle polynuclear aromatic hydrocarbons is transferred to an extractor and the 2-5 cycle polynuclear aromatic hydrocarbons are extracted with a solvent system comprising an aprotic solvent.

Claim (Index 16):
A method of extracting 1-4 cycle heterocyclic compounds and 2-5 cycle polynuclear aromatic hydrocarbons from a hydrocarbon feedstock, the method comprising:\n providing a hydrocarbon feedstock comprising having an A/R ratio from 0:1 to 0.5:1 and an asphaltene concentration from 0.0 wt. % to 2.0 wt. %, the hydrocarbon feedstock containing crude oil fractions comprising 1-4 cycle heterocyclic compounds and 2-5 cycle polynuclear aromatic hydrocarbons; cracking hydrocarbon feedstock in a cracker to form a treated hydrocarbon feedstock comprising fractions having a boiling point range of 165\u00b0 C. to 470\u00b0 C.; fractionating the treated hydrocarbon feedstock into a first fractionated stream having a boiling point range of less than 165\u00b0 C., a second fractionated stream having a boiling point range of 165\u00b0 C. to 470\u00b0 C., and a third fractionated stream having a boiling point range of greater than 470\u00b0 C.; extracting at least one targeted portion of the 1-4 cycle heterocyclic compounds from the second fractionated stream with an aqueous solvent comprising an ionic liquid formed from pressurized carbon dioxide and water; transferring to a PAH extractor a 1-4 cycle heterocyclic compound-lean stream containing the 2-5 cycle polynuclear aromatic hydrocarbons after all targeted portions of the 1-4 cycle heterocyclic compounds have been extracted from the second fractionated stream; and extracting the 2-5 cycle polynuclear aromatic hydrocarbons from the heteroatom-lean stream in the PAH extractor with a solvent system comprising an aprotic solvent.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 86.0
- Lexical Diversity: 1.95238
- Patent Class: 208.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14300709', '14617358', '14107471', '15437271', '15220896']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7034385940893313
- 35 USC 102 Novelty (BERT): 0.6754455840551729
- Combined Prediction Score: 0.7006392930859155
- Mean Citation Score: 404.856446
- Max Citation Score: 741.76074
- Similarity Product: 594.0315975653746

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