PATENT CLAIM ANALYSIS

Application Number: 16135132
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-01
Patent Classification: ["208", "057000"]

Abstract:
A process for producing naphthenic base oils from low quality naphthenic crude feedstocks. The naphthenic base oils produced by the process have improved low temperature properties at high yields based on feedstock.

Claim (Index 54):
A process for producing a naphthenic base oil comprising the steps of:\n a) hydrotreating a naphthenic feedstock having a sulfur content of up to about 5% by weight (as measured by ASTM D4294) and a nitrogen content of up to about 3% by weight (as measured by ASTM D5762) in the presence of a hydrotreating catalyst and hydrotreating conditions to produce a hydrotreated naphthenic effluent; b) dewaxing the hydrotreated naphthenic effluent having a sulfur content of about 0.0005% to about 0.5% by weight (as measured by ASTM D4294) and a nitrogen content of up to about 0.1% by weight (as measured by ASTM D5762) in the presence of a dewaxing cracking catalyst and under catalytic dewaxing conditions to produce a dewaxed effluent; c) hydrofinishing the dewaxed effluent in the presence of a hydrofinishing catalyst and under catalytic hydrofinishing conditions to produce a dewaxed hydrofinished effluent having reduced levels of polycyclic aromatic hydrocarbon compounds and reduced levels of unstable olefinic compounds; and d) fractionating the dewaxed hydrofinished effluent to remove one or more low viscosity high volatility fractions and provide a naphthenic base oil having a pour point (as measured by ASTM D5949) below about \u22125\u00b0 C., at a yield greater than 85% of total naphthenic base oil over total hydrotreated naphthenic feedstock.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 97.0
- Lexical Diversity: 1.25926
- Patent Class: 208.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15511442', '15511496', '12999415', '11438059', '13611178']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7698111216887955
- 35 USC 102 Novelty (BERT): 0.6349656454834123
- Combined Prediction Score: 0.7563265740682572
- Mean Citation Score: 409.457602
- Max Citation Score: 584.2118
- Similarity Product: 534.2689329069615

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