PATENT CLAIM ANALYSIS

Application Number: 15745738
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["562", "486000"]

Abstract:
A method for producing high-purity terephthalic acid, comprising following steps (a) to (c): the step (a); obtaining crude terephthalic acid crystal by liquid phase-oxidizing a p-phenylene compound; the step (b); obtaining a terephthalic acid crystal slurry by a catalytic hydrogenation treatment of the crude terephthalic acid crystal; and the step (c); introducing the terephthalic acid crystal slurry into an upper portion of a mother liquor replacement tower, and bringing the slurry into contact with an upward flow of replacement water introduced from a bottom portion of the mother liquor replacement tower while making the terephthalic acid crystal settled down in the tower, and extracting the terephthalic acid crystal as a slurry with the replacement water from the tower bottom portion, wherein (1) a stirring blade unit is disposed in a slurry layer in the bottom portion of the mother liquor replacement tower, and fluidity of the slurry layer is maintained by rotating the stirring blade unit in such a way that stirring power is 0.1 to 1.0 kWh/m 3  per unit volume of the slurry layer, and (2) the replacement water is fed through the replacement water feed opening provided in the stirring blade unit.

Claim (Index 6):
The method according to  claim 1 , wherein a temperature of the replacement water fed through the replacement water feed opening is 5 to 25\u00b0 C. lower than a temperature of the slurry layer in the tower bottom portion.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 86.0
- Lexical Diversity: 2.52273
- Patent Class: 562.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16331851', '10574273', '16088226', '10398191', '13587449']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7528105651402532
- 35 USC 102 Novelty (BERT): 0.5386956411108329
- Combined Prediction Score: 0.7313990727373112
- Mean Citation Score: 303.45631999999995
- Max Citation Score: 363.1689
- Similarity Product: 199.4474888167261

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